drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * (c) Copyright 2010-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@daterainc.com>
   8  *
   9  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  10  * the TCM_FC / Open-FCoE.org fabric module.
  11  *
  12  * Copyright (c) 2010 Cisco Systems, Inc
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  ****************************************************************************/
  24
  25
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <generated/utsrelease.h>
  29 #include <linux/utsname.h>
  30 #include <linux/vmalloc.h>
  31 #include <linux/init.h>
  32 #include <linux/list.h>
  33 #include <linux/slab.h>
  34 #include <linux/kthread.h>
  35 #include <linux/types.h>
  36 #include <linux/string.h>
  37 #include <linux/configfs.h>
  38 #include <linux/ctype.h>
  39 #include <asm/unaligned.h>
  40 #include <scsi/scsi.h>
  41 #include <scsi/scsi_host.h>
  42 #include <scsi/scsi_device.h>
  43 #include <scsi/scsi_cmnd.h>
  44 #include <target/target_core_base.h>
  45 #include <target/target_core_fabric.h>
  46 #include <target/target_core_fabric_configfs.h>
  47 #include <target/configfs_macros.h>
  48
  49 #include "qla_def.h"
  50 #include "qla_target.h"
  51 #include "tcm_qla2xxx.h"
  52
  53 static struct workqueue_struct *tcm_qla2xxx_free_wq;
  54 static struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  55
  56 /*
  57  * Parse WWN.
  58  * If strict, we require lower-case hex and colon separators to be sure
  59  * the name is the same as what would be generated by ft_format_wwn()
  60  * so the name and wwn are mapped one-to-one.
  61  */
  62 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  63 {
  64         const char *cp;
  65         char c;
  66         u32 nibble;
  67         u32 byte = 0;
  68         u32 pos = 0;
  69         u32 err;
  70
  71         *wwn = 0;
  72         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  73                 c = *cp;
  74                 if (c == '\n' && cp[1] == '\0')
  75                         continue;
  76                 if (strict && pos++ == 2 && byte++ < 7) {
  77                         pos = 0;
  78                         if (c == ':')
  79                                 continue;
  80                         err = 1;
  81                         goto fail;
  82                 }
  83                 if (c == '\0') {
  84                         err = 2;
  85                         if (strict && byte != 8)
  86                                 goto fail;
  87                         return cp - name;
  88                 }
  89                 err = 3;
  90                 if (isdigit(c))
  91                         nibble = c - '0';
  92                 else if (isxdigit(c) && (islower(c) || !strict))
  93                         nibble = tolower(c) - 'a' + 10;
  94                 else
  95                         goto fail;
  96                 *wwn = (*wwn << 4) | nibble;
  97         }
  98         err = 4;
  99 fail:
 100         pr_debug("err %u len %zu pos %u byte %u\n",
 101                         err, cp - name, pos, byte);
 102         return -1;
 103 }
 104
 105 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 106 {
 107         u8 b[8];
 108
 109         put_unaligned_be64(wwn, b);
 110         return snprintf(buf, len,
 111                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 112                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 113 }
 114
 115 static char *tcm_qla2xxx_get_fabric_name(void)
 116 {
 117         return "qla2xxx";
 118 }
 119
 120 /*
 121  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 122  */
 123 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 124 {
 125         unsigned int i, j;
 126         u8 wwn[8];
 127
 128         memset(wwn, 0, sizeof(wwn));
 129
 130         /* Validate and store the new name */
 131         for (i = 0, j = 0; i < 16; i++) {
 132                 int value;
 133
 134                 value = hex_to_bin(*ns++);
 135                 if (value >= 0)
 136                         j = (j << 4) | value;
 137                 else
 138                         return -EINVAL;
 139
 140                 if (i % 2) {
 141                         wwn[i/2] = j & 0xff;
 142                         j = 0;
 143                 }
 144         }
 145
 146         *nm = wwn_to_u64(wwn);
 147         return 0;
 148 }
 149
 150 /*
 151  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 152  * store_fc_host_vport_create()
 153  */
 154 static int tcm_qla2xxx_npiv_parse_wwn(
 155         const char *name,
 156         size_t count,
 157         u64 *wwpn,
 158         u64 *wwnn)
 159 {
 160         unsigned int cnt = count;
 161         int rc;
 162
 163         *wwpn = 0;
 164         *wwnn = 0;
 165
 166         /* count may include a LF at end of string */
 167         if (name[cnt-1] == '\n' || name[cnt-1] == 0)
 168                 cnt--;
 169
 170         /* validate we have enough characters for WWPN */
 171         if ((cnt != (16+1+16)) || (name[16] != ':'))
 172                 return -EINVAL;
 173
 174         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 175         if (rc != 0)
 176                 return rc;
 177
 178         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 179         if (rc != 0)
 180                 return rc;
 181
 182         return 0;
 183 }
 184
 185 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 186 {
 187         return "qla2xxx_npiv";
 188 }
 189
 190 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 191 {
 192         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 193                                 struct tcm_qla2xxx_tpg, se_tpg);
 194         struct tcm_qla2xxx_lport *lport = tpg->lport;
 195
 196         return lport->lport_naa_name;
 197 }
 198
 199 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 200 {
 201         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 202                                 struct tcm_qla2xxx_tpg, se_tpg);
 203         return tpg->lport_tpgt;
 204 }
 205
 206 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 207 {
 208         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 209                                 struct tcm_qla2xxx_tpg, se_tpg);
 210
 211         return tpg->tpg_attrib.generate_node_acls;
 212 }
 213
 214 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 215 {
 216         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 217                                 struct tcm_qla2xxx_tpg, se_tpg);
 218
 219         return tpg->tpg_attrib.cache_dynamic_acls;
 220 }
 221
 222 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 223 {
 224         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 225                                 struct tcm_qla2xxx_tpg, se_tpg);
 226
 227         return tpg->tpg_attrib.demo_mode_write_protect;
 228 }
 229
 230 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 231 {
 232         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 233                                 struct tcm_qla2xxx_tpg, se_tpg);
 234
 235         return tpg->tpg_attrib.prod_mode_write_protect;
 236 }
 237
 238 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
 239 {
 240         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 241                                 struct tcm_qla2xxx_tpg, se_tpg);
 242
 243         return tpg->tpg_attrib.demo_mode_login_only;
 244 }
 245
 246 static int tcm_qla2xxx_check_prot_fabric_only(struct se_portal_group *se_tpg)
 247 {
 248         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 249                                 struct tcm_qla2xxx_tpg, se_tpg);
 250
 251         return tpg->tpg_attrib.fabric_prot_type;
 252 }
 253
 254 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 255 {
 256         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 257                                 struct tcm_qla2xxx_tpg, se_tpg);
 258
 259         return tpg->lport_tpgt;
 260 }
 261
 262 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 263 {
 264         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 265                         struct qla_tgt_mgmt_cmd, free_work);
 266
 267         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 268 }
 269
 270 /*
 271  * Called from qla_target_template->free_mcmd(), and will call
 272  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 273  * release callback.  qla_hw_data->hardware_lock is expected to be held
 274  */
 275 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 276 {
 277         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 278         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 279 }
 280
 281 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 282 {
 283         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 284
 285         cmd->cmd_in_wq = 0;
 286
 287         WARN_ON(cmd->cmd_flags &  BIT_16);
 288
 289         cmd->cmd_flags |= BIT_16;
 290         transport_generic_free_cmd(&cmd->se_cmd, 0);
 291 }
 292
 293 /*
 294  * Called from qla_target_template->free_cmd(), and will call
 295  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 296  * release callback.  qla_hw_data->hardware_lock is expected to be held
 297  */
 298 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 299 {
 300         cmd->cmd_in_wq = 1;
 301         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 302         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 303 }
 304
 305 /*
 306  * Called from struct target_core_fabric_ops->check_stop_free() context
 307  */
 308 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 309 {
 310         struct qla_tgt_cmd *cmd;
 311
 312         if ((se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) == 0) {
 313                 cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 314                 cmd->cmd_flags |= BIT_14;
 315         }
 316
 317         return target_put_sess_cmd(se_cmd);
 318 }
 319
 320 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 321  * fabric descriptor @se_cmd command to release
 322  */
 323 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 324 {
 325         struct qla_tgt_cmd *cmd;
 326
 327         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 328                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 329                                 struct qla_tgt_mgmt_cmd, se_cmd);
 330                 qlt_free_mcmd(mcmd);
 331                 return;
 332         }
 333
 334         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 335         qlt_free_cmd(cmd);
 336 }
 337
 338 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 339 {
 340         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 341         struct scsi_qla_host *vha;
 342         unsigned long flags;
 343
 344         BUG_ON(!sess);
 345         vha = sess->vha;
 346
 347         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 348         target_sess_cmd_list_set_waiting(se_sess);
 349         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 350
 351         return 1;
 352 }
 353
 354 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 355 {
 356         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 357         struct scsi_qla_host *vha;
 358         unsigned long flags;
 359
 360         BUG_ON(!sess);
 361         vha = sess->vha;
 362
 363         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 364         qlt_unreg_sess(sess);
 365         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 366 }
 367
 368 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 369 {
 370         return 0;
 371 }
 372
 373 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 374 {
 375         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 376                                 struct qla_tgt_cmd, se_cmd);
 377
 378         cmd->bufflen = se_cmd->data_length;
 379         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 380
 381         cmd->sg_cnt = se_cmd->t_data_nents;
 382         cmd->sg = se_cmd->t_data_sg;
 383
 384         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 385         cmd->prot_sg = se_cmd->t_prot_sg;
 386         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 387         se_cmd->pi_err = 0;
 388
 389         /*
 390          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 391          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 392          */
 393         return qlt_rdy_to_xfer(cmd);
 394 }
 395
 396 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 397 {
 398         unsigned long flags;
 399         /*
 400          * Check for WRITE_PENDING status to determine if we need to wait for
 401          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 402          */
 403         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 404         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 405             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 406                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 407                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 408                                                 3000);
 409                 return 0;
 410         }
 411         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 412
 413         return 0;
 414 }
 415
 416 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 417 {
 418         return;
 419 }
 420
 421 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 422 {
 423         return 0;
 424 }
 425
 426 /*
 427  * Called from process context in qla_target.c:qlt_do_work() code
 428  */
 429 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 430         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 431         int data_dir, int bidi)
 432 {
 433         struct se_cmd *se_cmd = &cmd->se_cmd;
 434         struct se_session *se_sess;
 435         struct qla_tgt_sess *sess;
 436         int flags = TARGET_SCF_ACK_KREF;
 437
 438         if (bidi)
 439                 flags |= TARGET_SCF_BIDI_OP;
 440
 441         sess = cmd->sess;
 442         if (!sess) {
 443                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 444                 return -EINVAL;
 445         }
 446
 447         se_sess = sess->se_sess;
 448         if (!se_sess) {
 449                 pr_err("Unable to locate active struct se_session\n");
 450                 return -EINVAL;
 451         }
 452
 453         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 454                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 455                                 data_dir, flags);
 456 }
 457
 458 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 459 {
 460         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 461
 462         /*
 463          * Ensure that the complete FCP WRITE payload has been received.
 464          * Otherwise return an exception via CHECK_CONDITION status.
 465          */
 466         cmd->cmd_in_wq = 0;
 467         cmd->cmd_flags |= BIT_11;
 468         if (!cmd->write_data_transferred) {
 469                 /*
 470                  * Check if se_cmd has already been aborted via LUN_RESET, and
 471                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 472                  */
 473                 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
 474                         complete(&cmd->se_cmd.t_transport_stop_comp);
 475                         return;
 476                 }
 477
 478                 if (cmd->se_cmd.pi_err)
 479                         transport_generic_request_failure(&cmd->se_cmd,
 480                                 cmd->se_cmd.pi_err);
 481                 else
 482                         transport_generic_request_failure(&cmd->se_cmd,
 483                                 TCM_CHECK_CONDITION_ABORT_CMD);
 484
 485                 return;
 486         }
 487
 488         return target_execute_cmd(&cmd->se_cmd);
 489 }
 490
 491 /*
 492  * Called from qla_target.c:qlt_do_ctio_completion()
 493  */
 494 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 495 {
 496         cmd->cmd_flags |= BIT_10;
 497         cmd->cmd_in_wq = 1;
 498         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 499         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 500 }
 501
 502 static void tcm_qla2xxx_handle_dif_work(struct work_struct *work)
 503 {
 504         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 505
 506         /* take an extra kref to prevent cmd free too early.
 507          * need to wait for SCSI status/check condition to
 508          * finish responding generate by transport_generic_request_failure.
 509          */
 510         kref_get(&cmd->se_cmd.cmd_kref);
 511         transport_generic_request_failure(&cmd->se_cmd, cmd->se_cmd.pi_err);
 512 }
 513
 514 /*
 515  * Called from qla_target.c:qlt_do_ctio_completion()
 516  */
 517 static void tcm_qla2xxx_handle_dif_err(struct qla_tgt_cmd *cmd)
 518 {
 519         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_dif_work);
 520         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 521 }
 522
 523 /*
 524  * Called from qla_target.c:qlt_issue_task_mgmt()
 525  */
 526 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 527         uint8_t tmr_func, uint32_t tag)
 528 {
 529         struct qla_tgt_sess *sess = mcmd->sess;
 530         struct se_cmd *se_cmd = &mcmd->se_cmd;
 531
 532         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 533                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 534 }
 535
 536 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 537 {
 538         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 539                                 struct qla_tgt_cmd, se_cmd);
 540
 541         cmd->cmd_flags |= BIT_4;
 542         cmd->bufflen = se_cmd->data_length;
 543         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 544         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 545
 546         cmd->sg_cnt = se_cmd->t_data_nents;
 547         cmd->sg = se_cmd->t_data_sg;
 548         cmd->offset = 0;
 549         cmd->cmd_flags |= BIT_3;
 550
 551         cmd->prot_sg_cnt = se_cmd->t_prot_nents;
 552         cmd->prot_sg = se_cmd->t_prot_sg;
 553         cmd->blk_sz  = se_cmd->se_dev->dev_attrib.block_size;
 554         se_cmd->pi_err = 0;
 555
 556         /*
 557          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 558          */
 559         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 560                                 se_cmd->scsi_status);
 561 }
 562
 563 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 564 {
 565         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 566                                 struct qla_tgt_cmd, se_cmd);
 567         int xmit_type = QLA_TGT_XMIT_STATUS;
 568
 569         cmd->bufflen = se_cmd->data_length;
 570         cmd->sg = NULL;
 571         cmd->sg_cnt = 0;
 572         cmd->offset = 0;
 573         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 574         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 575         if (cmd->cmd_flags &  BIT_5) {
 576                 pr_crit("Bit_5 already set for cmd = %p.\n", cmd);
 577                 dump_stack();
 578         }
 579         cmd->cmd_flags |= BIT_5;
 580
 581         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 582                 /*
 583                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 584                  * for qla_tgt_xmit_response LLD code
 585                  */
 586                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 587                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 588                         se_cmd->residual_count = 0;
 589                 }
 590                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 591                 se_cmd->residual_count += se_cmd->data_length;
 592
 593                 cmd->bufflen = 0;
 594         }
 595         /*
 596          * Now queue status response to qla2xxx LLD code and response ring
 597          */
 598         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 599 }
 600
 601 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 602 {
 603         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 604         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 605                                 struct qla_tgt_mgmt_cmd, se_cmd);
 606
 607         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 608                         mcmd, se_tmr->function, se_tmr->response);
 609         /*
 610          * Do translation between TCM TM response codes and
 611          * QLA2xxx FC TM response codes.
 612          */
 613         switch (se_tmr->response) {
 614         case TMR_FUNCTION_COMPLETE:
 615                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 616                 break;
 617         case TMR_TASK_DOES_NOT_EXIST:
 618                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 619                 break;
 620         case TMR_FUNCTION_REJECTED:
 621                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 622                 break;
 623         case TMR_LUN_DOES_NOT_EXIST:
 624         default:
 625                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 626                 break;
 627         }
 628         /*
 629          * Queue the TM response to QLA2xxx LLD to build a
 630          * CTIO response packet.
 631          */
 632         qlt_xmit_tm_rsp(mcmd);
 633 }
 634
 635 static void tcm_qla2xxx_aborted_task(struct se_cmd *se_cmd)
 636 {
 637         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 638                                 struct qla_tgt_cmd, se_cmd);
 639         struct scsi_qla_host *vha = cmd->vha;
 640         struct qla_hw_data *ha = vha->hw;
 641
 642         if (!cmd->sg_mapped)
 643                 return;
 644
 645         pci_unmap_sg(ha->pdev, cmd->sg, cmd->sg_cnt, cmd->dma_data_direction);
 646         cmd->sg_mapped = 0;
 647 }
 648
 649 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 650                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 651 /*
 652  * Expected to be called with struct qla_hw_data->hardware_lock held
 653  */
 654 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 655 {
 656         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 657         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 658         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 659         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 660                                 struct tcm_qla2xxx_lport, lport_wwn);
 661         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 662                                 struct tcm_qla2xxx_nacl, se_node_acl);
 663         void *node;
 664
 665         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 666
 667         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 668         if (WARN_ON(node && (node != se_nacl))) {
 669                 /*
 670                  * The nacl no longer matches what we think it should be.
 671                  * Most likely a new dynamic acl has been added while
 672                  * someone dropped the hardware lock.  It clearly is a
 673                  * bug elsewhere, but this bit can't make things worse.
 674                  */
 675                 btree_insert32(&lport->lport_fcport_map, nacl->nport_id,
 676                                node, GFP_ATOMIC);
 677         }
 678
 679         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 680             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 681         /*
 682          * Now clear the se_nacl and session pointers from our HW lport lookup
 683          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 684          *
 685          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 686          * target_wait_for_sess_cmds() before the session waits for outstanding
 687          * I/O to complete, to avoid a race between session shutdown execution
 688          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 689          */
 690         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 691 }
 692
 693 static void tcm_qla2xxx_release_session(struct kref *kref)
 694 {
 695         struct se_session *se_sess = container_of(kref,
 696                         struct se_session, sess_kref);
 697
 698         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 699 }
 700
 701 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 702 {
 703         if (!sess)
 704                 return;
 705
 706         assert_spin_locked(&sess->vha->hw->hardware_lock);
 707         kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
 708 }
 709
 710 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 711 {
 712         assert_spin_locked(&sess->vha->hw->hardware_lock);
 713         target_sess_cmd_list_set_waiting(sess->se_sess);
 714 }
 715
 716 static int tcm_qla2xxx_init_nodeacl(struct se_node_acl *se_nacl,
 717                 const char *name)
 718 {
 719         struct tcm_qla2xxx_nacl *nacl =
 720                 container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 721         u64 wwnn;
 722
 723         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 724                 return -EINVAL;
 725
 726         nacl->nport_wwnn = wwnn;
 727         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 728
 729         return 0;
 730 }
 731
 732 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 733
 734 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 735                                                                         \
 736 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 737         struct se_portal_group *se_tpg,                                 \
 738         char *page)                                                     \
 739 {                                                                       \
 740         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 741                         struct tcm_qla2xxx_tpg, se_tpg);                \
 742                                                                         \
 743         return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 744 }                                                                       \
 745                                                                         \
 746 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 747         struct se_portal_group *se_tpg,                                 \
 748         const char *page,                                               \
 749         size_t count)                                                   \
 750 {                                                                       \
 751         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 752                         struct tcm_qla2xxx_tpg, se_tpg);                \
 753         unsigned long val;                                              \
 754         int ret;                                                        \
 755                                                                         \
 756         ret = kstrtoul(page, 0, &val);                                  \
 757         if (ret < 0) {                                                  \
 758                 pr_err("kstrtoul() failed with"                         \
 759                                 " ret: %d\n", ret);                     \
 760                 return -EINVAL;                                         \
 761         }                                                               \
 762         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 763                                                                         \
 764         return (!ret) ? count : -EINVAL;                                \
 765 }
 766
 767 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 768                                                                         \
 769 static int tcm_qla2xxx_set_attrib_##_name(                              \
 770         struct tcm_qla2xxx_tpg *tpg,                                    \
 771         unsigned long val)                                              \
 772 {                                                                       \
 773         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 774                                                                         \
 775         if ((val != 0) && (val != 1)) {                                 \
 776                 pr_err("Illegal boolean value %lu\n", val);             \
 777                 return -EINVAL;                                         \
 778         }                                                               \
 779                                                                         \
 780         a->_name = val;                                                 \
 781         return 0;                                                       \
 782 }
 783
 784 #define QLA_TPG_ATTR(_name, _mode) \
 785         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 786
 787 /*
 788  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 789  */
 790 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 791 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 792 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 793
 794 /*
 795  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 796  */
 797 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 798 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 799 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 800
 801 /*
 802  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 803  */
 804 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 805 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 806 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 807
 808 /*
 809  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 810  */
 811 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 812 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 813 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 814
 815 /*
 816  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
 817  */
 818 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
 819 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
 820 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
 821
 822 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 823         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 824         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 825         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 826         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 827         &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
 828         NULL,
 829 };
 830
 831 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 832
 833 static ssize_t tcm_qla2xxx_tpg_show_enable(
 834         struct se_portal_group *se_tpg,
 835         char *page)
 836 {
 837         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 838                         struct tcm_qla2xxx_tpg, se_tpg);
 839
 840         return snprintf(page, PAGE_SIZE, "%d\n",
 841                         atomic_read(&tpg->lport_tpg_enabled));
 842 }
 843
 844 static void tcm_qla2xxx_depend_tpg(struct work_struct *work)
 845 {
 846         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
 847                                 struct tcm_qla2xxx_tpg, tpg_base_work);
 848         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
 849         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
 850
 851         if (!target_depend_item(&se_tpg->tpg_group.cg_item)) {
 852                 atomic_set(&base_tpg->lport_tpg_enabled, 1);
 853                 qlt_enable_vha(base_vha);
 854         }
 855         complete(&base_tpg->tpg_base_comp);
 856 }
 857
 858 static void tcm_qla2xxx_undepend_tpg(struct work_struct *work)
 859 {
 860         struct tcm_qla2xxx_tpg *base_tpg = container_of(work,
 861                                 struct tcm_qla2xxx_tpg, tpg_base_work);
 862         struct se_portal_group *se_tpg = &base_tpg->se_tpg;
 863         struct scsi_qla_host *base_vha = base_tpg->lport->qla_vha;
 864
 865         if (!qlt_stop_phase1(base_vha->vha_tgt.qla_tgt)) {
 866                 atomic_set(&base_tpg->lport_tpg_enabled, 0);
 867                 target_undepend_item(&se_tpg->tpg_group.cg_item);
 868         }
 869         complete(&base_tpg->tpg_base_comp);
 870 }
 871
 872 static ssize_t tcm_qla2xxx_tpg_store_enable(
 873         struct se_portal_group *se_tpg,
 874         const char *page,
 875         size_t count)
 876 {
 877         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 878                         struct tcm_qla2xxx_tpg, se_tpg);
 879         unsigned long op;
 880         int rc;
 881
 882         rc = kstrtoul(page, 0, &op);
 883         if (rc < 0) {
 884                 pr_err("kstrtoul() returned %d\n", rc);
 885                 return -EINVAL;
 886         }
 887         if ((op != 1) && (op != 0)) {
 888                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 889                 return -EINVAL;
 890         }
 891         if (op) {
 892                 if (atomic_read(&tpg->lport_tpg_enabled))
 893                         return -EEXIST;
 894
 895                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_depend_tpg);
 896         } else {
 897                 if (!atomic_read(&tpg->lport_tpg_enabled))
 898                         return count;
 899
 900                 INIT_WORK(&tpg->tpg_base_work, tcm_qla2xxx_undepend_tpg);
 901         }
 902         init_completion(&tpg->tpg_base_comp);
 903         schedule_work(&tpg->tpg_base_work);
 904         wait_for_completion(&tpg->tpg_base_comp);
 905
 906         if (op) {
 907                 if (!atomic_read(&tpg->lport_tpg_enabled))
 908                         return -ENODEV;
 909         } else {
 910                 if (atomic_read(&tpg->lport_tpg_enabled))
 911                         return -EPERM;
 912         }
 913         return count;
 914 }
 915
 916 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
 917
 918 static ssize_t tcm_qla2xxx_tpg_show_dynamic_sessions(
 919         struct se_portal_group *se_tpg,
 920         char *page)
 921 {
 922         return target_show_dynamic_sessions(se_tpg, page);
 923 }
 924
 925 TF_TPG_BASE_ATTR_RO(tcm_qla2xxx, dynamic_sessions);
 926
 927 static ssize_t tcm_qla2xxx_tpg_store_fabric_prot_type(
 928         struct se_portal_group *se_tpg,
 929         const char *page,
 930         size_t count)
 931 {
 932         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 933                                 struct tcm_qla2xxx_tpg, se_tpg);
 934         unsigned long val;
 935         int ret = kstrtoul(page, 0, &val);
 936
 937         if (ret) {
 938                 pr_err("kstrtoul() returned %d for fabric_prot_type\n", ret);
 939                 return ret;
 940         }
 941         if (val != 0 && val != 1 && val != 3) {
 942                 pr_err("Invalid qla2xxx fabric_prot_type: %lu\n", val);
 943                 return -EINVAL;
 944         }
 945         tpg->tpg_attrib.fabric_prot_type = val;
 946
 947         return count;
 948 }
 949
 950 static ssize_t tcm_qla2xxx_tpg_show_fabric_prot_type(
 951         struct se_portal_group *se_tpg,
 952         char *page)
 953 {
 954         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 955                                 struct tcm_qla2xxx_tpg, se_tpg);
 956
 957         return sprintf(page, "%d\n", tpg->tpg_attrib.fabric_prot_type);
 958 }
 959 TF_TPG_BASE_ATTR(tcm_qla2xxx, fabric_prot_type, S_IRUGO | S_IWUSR);
 960
 961 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
 962         &tcm_qla2xxx_tpg_enable.attr,
 963         &tcm_qla2xxx_tpg_dynamic_sessions.attr,
 964         &tcm_qla2xxx_tpg_fabric_prot_type.attr,
 965         NULL,
 966 };
 967
 968 static struct se_portal_group *tcm_qla2xxx_make_tpg(
 969         struct se_wwn *wwn,
 970         struct config_group *group,
 971         const char *name)
 972 {
 973         struct tcm_qla2xxx_lport *lport = container_of(wwn,
 974                         struct tcm_qla2xxx_lport, lport_wwn);
 975         struct tcm_qla2xxx_tpg *tpg;
 976         unsigned long tpgt;
 977         int ret;
 978
 979         if (strstr(name, "tpgt_") != name)
 980                 return ERR_PTR(-EINVAL);
 981         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
 982                 return ERR_PTR(-EINVAL);
 983
 984         if ((tpgt != 1)) {
 985                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
 986                 return ERR_PTR(-ENOSYS);
 987         }
 988
 989         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
 990         if (!tpg) {
 991                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
 992                 return ERR_PTR(-ENOMEM);
 993         }
 994         tpg->lport = lport;
 995         tpg->lport_tpgt = tpgt;
 996         /*
 997          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
 998          * NodeACLs
 999          */
1000         tpg->tpg_attrib.generate_node_acls = 1;
1001         tpg->tpg_attrib.demo_mode_write_protect = 1;
1002         tpg->tpg_attrib.cache_dynamic_acls = 1;
1003         tpg->tpg_attrib.demo_mode_login_only = 1;
1004
1005         ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1006         if (ret < 0) {
1007                 kfree(tpg);
1008                 return NULL;
1009         }
1010
1011         lport->tpg_1 = tpg;
1012
1013         return &tpg->se_tpg;
1014 }
1015
1016 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1017 {
1018         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1019                         struct tcm_qla2xxx_tpg, se_tpg);
1020         struct tcm_qla2xxx_lport *lport = tpg->lport;
1021         struct scsi_qla_host *vha = lport->qla_vha;
1022         /*
1023          * Call into qla2x_target.c LLD logic to shutdown the active
1024          * FC Nexuses and disable target mode operation for this qla_hw_data
1025          */
1026         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stop)
1027                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1028
1029         core_tpg_deregister(se_tpg);
1030         /*
1031          * Clear local TPG=1 pointer for non NPIV mode.
1032          */
1033         lport->tpg_1 = NULL;
1034         kfree(tpg);
1035 }
1036
1037 static ssize_t tcm_qla2xxx_npiv_tpg_show_enable(
1038         struct se_portal_group *se_tpg,
1039         char *page)
1040 {
1041         return tcm_qla2xxx_tpg_show_enable(se_tpg, page);
1042 }
1043
1044 static ssize_t tcm_qla2xxx_npiv_tpg_store_enable(
1045         struct se_portal_group *se_tpg,
1046         const char *page,
1047         size_t count)
1048 {
1049         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
1050         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
1051                         struct tcm_qla2xxx_lport, lport_wwn);
1052         struct scsi_qla_host *vha = lport->qla_vha;
1053         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1054                         struct tcm_qla2xxx_tpg, se_tpg);
1055         unsigned long op;
1056         int rc;
1057
1058         rc = kstrtoul(page, 0, &op);
1059         if (rc < 0) {
1060                 pr_err("kstrtoul() returned %d\n", rc);
1061                 return -EINVAL;
1062         }
1063         if ((op != 1) && (op != 0)) {
1064                 pr_err("Illegal value for tpg_enable: %lu\n", op);
1065                 return -EINVAL;
1066         }
1067         if (op) {
1068                 if (atomic_read(&tpg->lport_tpg_enabled))
1069                         return -EEXIST;
1070
1071                 atomic_set(&tpg->lport_tpg_enabled, 1);
1072                 qlt_enable_vha(vha);
1073         } else {
1074                 if (!atomic_read(&tpg->lport_tpg_enabled))
1075                         return count;
1076
1077                 atomic_set(&tpg->lport_tpg_enabled, 0);
1078                 qlt_stop_phase1(vha->vha_tgt.qla_tgt);
1079         }
1080
1081         return count;
1082 }
1083
1084 TF_TPG_BASE_ATTR(tcm_qla2xxx_npiv, enable, S_IRUGO | S_IWUSR);
1085
1086 static struct configfs_attribute *tcm_qla2xxx_npiv_tpg_attrs[] = {
1087         &tcm_qla2xxx_npiv_tpg_enable.attr,
1088         NULL,
1089 };
1090
1091 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1092         struct se_wwn *wwn,
1093         struct config_group *group,
1094         const char *name)
1095 {
1096         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1097                         struct tcm_qla2xxx_lport, lport_wwn);
1098         struct tcm_qla2xxx_tpg *tpg;
1099         unsigned long tpgt;
1100         int ret;
1101
1102         if (strstr(name, "tpgt_") != name)
1103                 return ERR_PTR(-EINVAL);
1104         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1105                 return ERR_PTR(-EINVAL);
1106
1107         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1108         if (!tpg) {
1109                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1110                 return ERR_PTR(-ENOMEM);
1111         }
1112         tpg->lport = lport;
1113         tpg->lport_tpgt = tpgt;
1114
1115         /*
1116          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1117          * NodeACLs
1118          */
1119         tpg->tpg_attrib.generate_node_acls = 1;
1120         tpg->tpg_attrib.demo_mode_write_protect = 1;
1121         tpg->tpg_attrib.cache_dynamic_acls = 1;
1122         tpg->tpg_attrib.demo_mode_login_only = 1;
1123
1124         ret = core_tpg_register(wwn, &tpg->se_tpg, SCSI_PROTOCOL_FCP);
1125         if (ret < 0) {
1126                 kfree(tpg);
1127                 return NULL;
1128         }
1129         lport->tpg_1 = tpg;
1130         return &tpg->se_tpg;
1131 }
1132
1133 /*
1134  * Expected to be called with struct qla_hw_data->hardware_lock held
1135  */
1136 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1137         scsi_qla_host_t *vha,
1138         const uint8_t *s_id)
1139 {
1140         struct tcm_qla2xxx_lport *lport;
1141         struct se_node_acl *se_nacl;
1142         struct tcm_qla2xxx_nacl *nacl;
1143         u32 key;
1144
1145         lport = vha->vha_tgt.target_lport_ptr;
1146         if (!lport) {
1147                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1148                 dump_stack();
1149                 return NULL;
1150         }
1151
1152         key = (((unsigned long)s_id[0] << 16) |
1153                ((unsigned long)s_id[1] << 8) |
1154                (unsigned long)s_id[2]);
1155         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1156
1157         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1158         if (!se_nacl) {
1159                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1160                 return NULL;
1161         }
1162         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1163             se_nacl, se_nacl->initiatorname);
1164
1165         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1166         if (!nacl->qla_tgt_sess) {
1167                 pr_err("Unable to locate struct qla_tgt_sess\n");
1168                 return NULL;
1169         }
1170
1171         return nacl->qla_tgt_sess;
1172 }
1173
1174 /*
1175  * Expected to be called with struct qla_hw_data->hardware_lock held
1176  */
1177 static void tcm_qla2xxx_set_sess_by_s_id(
1178         struct tcm_qla2xxx_lport *lport,
1179         struct se_node_acl *new_se_nacl,
1180         struct tcm_qla2xxx_nacl *nacl,
1181         struct se_session *se_sess,
1182         struct qla_tgt_sess *qla_tgt_sess,
1183         uint8_t *s_id)
1184 {
1185         u32 key;
1186         void *slot;
1187         int rc;
1188
1189         key = (((unsigned long)s_id[0] << 16) |
1190                ((unsigned long)s_id[1] << 8) |
1191                (unsigned long)s_id[2]);
1192         pr_debug("set_sess_by_s_id: %06x\n", key);
1193
1194         slot = btree_lookup32(&lport->lport_fcport_map, key);
1195         if (!slot) {
1196                 if (new_se_nacl) {
1197                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1198                         nacl->nport_id = key;
1199                         rc = btree_insert32(&lport->lport_fcport_map, key,
1200                                         new_se_nacl, GFP_ATOMIC);
1201                         if (rc)
1202                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1203                                     (int)key);
1204                 } else {
1205                         pr_debug("Wiping nonexisting fc_port entry\n");
1206                 }
1207
1208                 qla_tgt_sess->se_sess = se_sess;
1209                 nacl->qla_tgt_sess = qla_tgt_sess;
1210                 return;
1211         }
1212
1213         if (nacl->qla_tgt_sess) {
1214                 if (new_se_nacl == NULL) {
1215                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1216                         btree_remove32(&lport->lport_fcport_map, key);
1217                         nacl->qla_tgt_sess = NULL;
1218                         return;
1219                 }
1220                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1221                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1222                 qla_tgt_sess->se_sess = se_sess;
1223                 nacl->qla_tgt_sess = qla_tgt_sess;
1224                 return;
1225         }
1226
1227         if (new_se_nacl == NULL) {
1228                 pr_debug("Clearing existing fc_port entry\n");
1229                 btree_remove32(&lport->lport_fcport_map, key);
1230                 return;
1231         }
1232
1233         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1234         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1235         qla_tgt_sess->se_sess = se_sess;
1236         nacl->qla_tgt_sess = qla_tgt_sess;
1237
1238         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1239             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1240 }
1241
1242 /*
1243  * Expected to be called with struct qla_hw_data->hardware_lock held
1244  */
1245 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1246         scsi_qla_host_t *vha,
1247         const uint16_t loop_id)
1248 {
1249         struct tcm_qla2xxx_lport *lport;
1250         struct se_node_acl *se_nacl;
1251         struct tcm_qla2xxx_nacl *nacl;
1252         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1253
1254         lport = vha->vha_tgt.target_lport_ptr;
1255         if (!lport) {
1256                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1257                 dump_stack();
1258                 return NULL;
1259         }
1260
1261         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1262
1263         fc_loopid = lport->lport_loopid_map + loop_id;
1264         se_nacl = fc_loopid->se_nacl;
1265         if (!se_nacl) {
1266                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1267                     loop_id);
1268                 return NULL;
1269         }
1270
1271         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1272
1273         if (!nacl->qla_tgt_sess) {
1274                 pr_err("Unable to locate struct qla_tgt_sess\n");
1275                 return NULL;
1276         }
1277
1278         return nacl->qla_tgt_sess;
1279 }
1280
1281 /*
1282  * Expected to be called with struct qla_hw_data->hardware_lock held
1283  */
1284 static void tcm_qla2xxx_set_sess_by_loop_id(
1285         struct tcm_qla2xxx_lport *lport,
1286         struct se_node_acl *new_se_nacl,
1287         struct tcm_qla2xxx_nacl *nacl,
1288         struct se_session *se_sess,
1289         struct qla_tgt_sess *qla_tgt_sess,
1290         uint16_t loop_id)
1291 {
1292         struct se_node_acl *saved_nacl;
1293         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1294
1295         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1296
1297         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1298                         lport->lport_loopid_map)[loop_id];
1299
1300         saved_nacl = fc_loopid->se_nacl;
1301         if (!saved_nacl) {
1302                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1303                 fc_loopid->se_nacl = new_se_nacl;
1304                 if (qla_tgt_sess->se_sess != se_sess)
1305                         qla_tgt_sess->se_sess = se_sess;
1306                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1307                         nacl->qla_tgt_sess = qla_tgt_sess;
1308                 return;
1309         }
1310
1311         if (nacl->qla_tgt_sess) {
1312                 if (new_se_nacl == NULL) {
1313                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1314                         fc_loopid->se_nacl = NULL;
1315                         nacl->qla_tgt_sess = NULL;
1316                         return;
1317                 }
1318
1319                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1320                 fc_loopid->se_nacl = new_se_nacl;
1321                 if (qla_tgt_sess->se_sess != se_sess)
1322                         qla_tgt_sess->se_sess = se_sess;
1323                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1324                         nacl->qla_tgt_sess = qla_tgt_sess;
1325                 return;
1326         }
1327
1328         if (new_se_nacl == NULL) {
1329                 pr_debug("Clearing fc_loopid->se_nacl\n");
1330                 fc_loopid->se_nacl = NULL;
1331                 return;
1332         }
1333
1334         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1335         fc_loopid->se_nacl = new_se_nacl;
1336         if (qla_tgt_sess->se_sess != se_sess)
1337                 qla_tgt_sess->se_sess = se_sess;
1338         if (nacl->qla_tgt_sess != qla_tgt_sess)
1339                 nacl->qla_tgt_sess = qla_tgt_sess;
1340
1341         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1342             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1343 }
1344
1345 /*
1346  * Should always be called with qla_hw_data->hardware_lock held.
1347  */
1348 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1349                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1350 {
1351         struct se_session *se_sess = sess->se_sess;
1352         unsigned char be_sid[3];
1353
1354         be_sid[0] = sess->s_id.b.domain;
1355         be_sid[1] = sess->s_id.b.area;
1356         be_sid[2] = sess->s_id.b.al_pa;
1357
1358         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1359                                 sess, be_sid);
1360         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1361                                 sess, sess->loop_id);
1362 }
1363
1364 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1365 {
1366         struct qla_tgt *tgt = sess->tgt;
1367         struct qla_hw_data *ha = tgt->ha;
1368         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1369         struct se_session *se_sess;
1370         struct se_node_acl *se_nacl;
1371         struct tcm_qla2xxx_lport *lport;
1372         struct tcm_qla2xxx_nacl *nacl;
1373
1374         BUG_ON(in_interrupt());
1375
1376         se_sess = sess->se_sess;
1377         if (!se_sess) {
1378                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1379                 dump_stack();
1380                 return;
1381         }
1382         se_nacl = se_sess->se_node_acl;
1383         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1384
1385         lport = vha->vha_tgt.target_lport_ptr;
1386         if (!lport) {
1387                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1388                 dump_stack();
1389                 return;
1390         }
1391         target_wait_for_sess_cmds(se_sess);
1392
1393         transport_deregister_session_configfs(sess->se_sess);
1394         transport_deregister_session(sess->se_sess);
1395 }
1396
1397 /*
1398  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1399  * to locate struct se_node_acl
1400  */
1401 static int tcm_qla2xxx_check_initiator_node_acl(
1402         scsi_qla_host_t *vha,
1403         unsigned char *fc_wwpn,
1404         void *qla_tgt_sess,
1405         uint8_t *s_id,
1406         uint16_t loop_id)
1407 {
1408         struct qla_hw_data *ha = vha->hw;
1409         struct tcm_qla2xxx_lport *lport;
1410         struct tcm_qla2xxx_tpg *tpg;
1411         struct tcm_qla2xxx_nacl *nacl;
1412         struct se_portal_group *se_tpg;
1413         struct se_node_acl *se_nacl;
1414         struct se_session *se_sess;
1415         struct qla_tgt_sess *sess = qla_tgt_sess;
1416         unsigned char port_name[36];
1417         unsigned long flags;
1418         int num_tags = (ha->fw_xcb_count) ? ha->fw_xcb_count :
1419                        TCM_QLA2XXX_DEFAULT_TAGS;
1420
1421         lport = vha->vha_tgt.target_lport_ptr;
1422         if (!lport) {
1423                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1424                 dump_stack();
1425                 return -EINVAL;
1426         }
1427         /*
1428          * Locate the TPG=1 reference..
1429          */
1430         tpg = lport->tpg_1;
1431         if (!tpg) {
1432                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1433                 return -EINVAL;
1434         }
1435         se_tpg = &tpg->se_tpg;
1436
1437         se_sess = transport_init_session_tags(num_tags,
1438                                               sizeof(struct qla_tgt_cmd),
1439                                               TARGET_PROT_ALL);
1440         if (IS_ERR(se_sess)) {
1441                 pr_err("Unable to initialize struct se_session\n");
1442                 return PTR_ERR(se_sess);
1443         }
1444         /*
1445          * Format the FCP Initiator port_name into colon seperated values to
1446          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1447          */
1448         memset(&port_name, 0, 36);
1449         snprintf(port_name, sizeof(port_name), "%8phC", fc_wwpn);
1450         /*
1451          * Locate our struct se_node_acl either from an explict NodeACL created
1452          * via ConfigFS, or via running in TPG demo mode.
1453          */
1454         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1455                                         port_name);
1456         if (!se_sess->se_node_acl) {
1457                 transport_free_session(se_sess);
1458                 return -EINVAL;
1459         }
1460         se_nacl = se_sess->se_node_acl;
1461         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1462         /*
1463          * And now setup the new se_nacl and session pointers into our HW lport
1464          * mappings for fabric S_ID and LOOP_ID.
1465          */
1466         spin_lock_irqsave(&ha->hardware_lock, flags);
1467         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1468                         qla_tgt_sess, s_id);
1469         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1470                         qla_tgt_sess, loop_id);
1471         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1472         /*
1473          * Finally register the new FC Nexus with TCM
1474          */
1475         transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1476
1477         return 0;
1478 }
1479
1480 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1481                                     uint16_t loop_id, bool conf_compl_supported)
1482 {
1483         struct qla_tgt *tgt = sess->tgt;
1484         struct qla_hw_data *ha = tgt->ha;
1485         scsi_qla_host_t *vha = pci_get_drvdata(ha->pdev);
1486         struct tcm_qla2xxx_lport *lport = vha->vha_tgt.target_lport_ptr;
1487         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1488         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1489                         struct tcm_qla2xxx_nacl, se_node_acl);
1490         u32 key;
1491
1492
1493         if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1494                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1495                     sess, sess->port_name,
1496                     sess->loop_id, loop_id, sess->s_id.b.domain,
1497                     sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1498                     s_id.b.area, s_id.b.al_pa);
1499
1500         if (sess->loop_id != loop_id) {
1501                 /*
1502                  * Because we can shuffle loop IDs around and we
1503                  * update different sessions non-atomically, we might
1504                  * have overwritten this session's old loop ID
1505                  * already, and we might end up overwriting some other
1506                  * session that will be updated later.  So we have to
1507                  * be extra careful and we can't warn about those things...
1508                  */
1509                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1510                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1511
1512                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1513
1514                 sess->loop_id = loop_id;
1515         }
1516
1517         if (sess->s_id.b24 != s_id.b24) {
1518                 key = (((u32) sess->s_id.b.domain << 16) |
1519                        ((u32) sess->s_id.b.area   <<  8) |
1520                        ((u32) sess->s_id.b.al_pa));
1521
1522                 if (btree_lookup32(&lport->lport_fcport_map, key))
1523                         WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1524                              "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1525                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1526                 else
1527                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1528                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1529
1530                 key = (((u32) s_id.b.domain << 16) |
1531                        ((u32) s_id.b.area   <<  8) |
1532                        ((u32) s_id.b.al_pa));
1533
1534                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1535                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1536                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1537                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1538                 } else {
1539                         btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1540                 }
1541
1542                 sess->s_id = s_id;
1543                 nacl->nport_id = key;
1544         }
1545
1546         sess->conf_compl_supported = conf_compl_supported;
1547 }
1548
1549 /*
1550  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1551  */
1552 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1553         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1554         .handle_data            = tcm_qla2xxx_handle_data,
1555         .handle_dif_err         = tcm_qla2xxx_handle_dif_err,
1556         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1557         .free_cmd               = tcm_qla2xxx_free_cmd,
1558         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1559         .free_session           = tcm_qla2xxx_free_session,
1560         .update_sess            = tcm_qla2xxx_update_sess,
1561         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1562         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1563         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1564         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1565         .put_sess               = tcm_qla2xxx_put_sess,
1566         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1567 };
1568
1569 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1570 {
1571         int rc;
1572
1573         rc = btree_init32(&lport->lport_fcport_map);
1574         if (rc) {
1575                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1576                 return rc;
1577         }
1578
1579         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1580                                 65536);
1581         if (!lport->lport_loopid_map) {
1582                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1583                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1584                 btree_destroy32(&lport->lport_fcport_map);
1585                 return -ENOMEM;
1586         }
1587         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1588                * 65536);
1589         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1590                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1591         return 0;
1592 }
1593
1594 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
1595                                          void *target_lport_ptr,
1596                                          u64 npiv_wwpn, u64 npiv_wwnn)
1597 {
1598         struct qla_hw_data *ha = vha->hw;
1599         struct tcm_qla2xxx_lport *lport =
1600                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1601         /*
1602          * Setup tgt_ops, local pointer to vha and target_lport_ptr
1603          */
1604         ha->tgt.tgt_ops = &tcm_qla2xxx_template;
1605         vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1606         lport->qla_vha = vha;
1607
1608         return 0;
1609 }
1610
1611 static struct se_wwn *tcm_qla2xxx_make_lport(
1612         struct target_fabric_configfs *tf,
1613         struct config_group *group,
1614         const char *name)
1615 {
1616         struct tcm_qla2xxx_lport *lport;
1617         u64 wwpn;
1618         int ret = -ENODEV;
1619
1620         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1621                 return ERR_PTR(-EINVAL);
1622
1623         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1624         if (!lport) {
1625                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1626                 return ERR_PTR(-ENOMEM);
1627         }
1628         lport->lport_wwpn = wwpn;
1629         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1630                                 wwpn);
1631         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1632
1633         ret = tcm_qla2xxx_init_lport(lport);
1634         if (ret != 0)
1635                 goto out;
1636
1637         ret = qlt_lport_register(lport, wwpn, 0, 0,
1638                                  tcm_qla2xxx_lport_register_cb);
1639         if (ret != 0)
1640                 goto out_lport;
1641
1642         return &lport->lport_wwn;
1643 out_lport:
1644         vfree(lport->lport_loopid_map);
1645         btree_destroy32(&lport->lport_fcport_map);
1646 out:
1647         kfree(lport);
1648         return ERR_PTR(ret);
1649 }
1650
1651 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1652 {
1653         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1654                         struct tcm_qla2xxx_lport, lport_wwn);
1655         struct scsi_qla_host *vha = lport->qla_vha;
1656         struct se_node_acl *node;
1657         u32 key = 0;
1658
1659         /*
1660          * Call into qla2x_target.c LLD logic to complete the
1661          * shutdown of struct qla_tgt after the call to
1662          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1663          */
1664         if (vha->vha_tgt.qla_tgt && !vha->vha_tgt.qla_tgt->tgt_stopped)
1665                 qlt_stop_phase2(vha->vha_tgt.qla_tgt);
1666
1667         qlt_lport_deregister(vha);
1668
1669         vfree(lport->lport_loopid_map);
1670         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1671                 btree_remove32(&lport->lport_fcport_map, key);
1672         btree_destroy32(&lport->lport_fcport_map);
1673         kfree(lport);
1674 }
1675
1676 static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
1677                                               void *target_lport_ptr,
1678                                               u64 npiv_wwpn, u64 npiv_wwnn)
1679 {
1680         struct fc_vport *vport;
1681         struct Scsi_Host *sh = base_vha->host;
1682         struct scsi_qla_host *npiv_vha;
1683         struct tcm_qla2xxx_lport *lport =
1684                         (struct tcm_qla2xxx_lport *)target_lport_ptr;
1685         struct tcm_qla2xxx_lport *base_lport =
1686                         (struct tcm_qla2xxx_lport *)base_vha->vha_tgt.target_lport_ptr;
1687         struct tcm_qla2xxx_tpg *base_tpg;
1688         struct fc_vport_identifiers vport_id;
1689
1690         if (!qla_tgt_mode_enabled(base_vha)) {
1691                 pr_err("qla2xxx base_vha not enabled for target mode\n");
1692                 return -EPERM;
1693         }
1694
1695         if (!base_lport || !base_lport->tpg_1 ||
1696             !atomic_read(&base_lport->tpg_1->lport_tpg_enabled)) {
1697                 pr_err("qla2xxx base_lport or tpg_1 not available\n");
1698                 return -EPERM;
1699         }
1700         base_tpg = base_lport->tpg_1;
1701
1702         memset(&vport_id, 0, sizeof(vport_id));
1703         vport_id.port_name = npiv_wwpn;
1704         vport_id.node_name = npiv_wwnn;
1705         vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
1706         vport_id.vport_type = FC_PORTTYPE_NPIV;
1707         vport_id.disable = false;
1708
1709         vport = fc_vport_create(sh, 0, &vport_id);
1710         if (!vport) {
1711                 pr_err("fc_vport_create failed for qla2xxx_npiv\n");
1712                 return -ENODEV;
1713         }
1714         /*
1715          * Setup local pointer to NPIV vhba + target_lport_ptr
1716          */
1717         npiv_vha = (struct scsi_qla_host *)vport->dd_data;
1718         npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
1719         lport->qla_vha = npiv_vha;
1720         scsi_host_get(npiv_vha->host);
1721         return 0;
1722 }
1723
1724
1725 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1726         struct target_fabric_configfs *tf,
1727         struct config_group *group,
1728         const char *name)
1729 {
1730         struct tcm_qla2xxx_lport *lport;
1731         u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
1732         char *p, tmp[128];
1733         int ret;
1734
1735         snprintf(tmp, 128, "%s", name);
1736
1737         p = strchr(tmp, '@');
1738         if (!p) {
1739                 pr_err("Unable to locate NPIV '@' seperator\n");
1740                 return ERR_PTR(-EINVAL);
1741         }
1742         *p++ = '\0';
1743
1744         if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
1745                 return ERR_PTR(-EINVAL);
1746
1747         if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
1748                                        &npiv_wwpn, &npiv_wwnn) < 0)
1749                 return ERR_PTR(-EINVAL);
1750
1751         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1752         if (!lport) {
1753                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1754                 return ERR_PTR(-ENOMEM);
1755         }
1756         lport->lport_npiv_wwpn = npiv_wwpn;
1757         lport->lport_npiv_wwnn = npiv_wwnn;
1758         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1759
1760         ret = tcm_qla2xxx_init_lport(lport);
1761         if (ret != 0)
1762                 goto out;
1763
1764         ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
1765                                  tcm_qla2xxx_lport_register_npiv_cb);
1766         if (ret != 0)
1767                 goto out_lport;
1768
1769         return &lport->lport_wwn;
1770 out_lport:
1771         vfree(lport->lport_loopid_map);
1772         btree_destroy32(&lport->lport_fcport_map);
1773 out:
1774         kfree(lport);
1775         return ERR_PTR(ret);
1776 }
1777
1778 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1779 {
1780         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1781                         struct tcm_qla2xxx_lport, lport_wwn);
1782         struct scsi_qla_host *npiv_vha = lport->qla_vha;
1783         struct qla_hw_data *ha = npiv_vha->hw;
1784         scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
1785
1786         scsi_host_put(npiv_vha->host);
1787         /*
1788          * Notify libfc that we want to release the vha->fc_vport
1789          */
1790         fc_vport_terminate(npiv_vha->fc_vport);
1791         scsi_host_put(base_vha->host);
1792         kfree(lport);
1793 }
1794
1795
1796 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1797         struct target_fabric_configfs *tf,
1798         char *page)
1799 {
1800         return sprintf(page,
1801             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1802             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1803             utsname()->machine);
1804 }
1805
1806 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1807
1808 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1809         &tcm_qla2xxx_wwn_version.attr,
1810         NULL,
1811 };
1812
1813 static const struct target_core_fabric_ops tcm_qla2xxx_ops = {
1814         .module                         = THIS_MODULE,
1815         .name                           = "qla2xxx",
1816         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1817         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1818         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1819         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1820         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1821         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1822         .tpg_check_demo_mode_write_protect =
1823                                         tcm_qla2xxx_check_demo_write_protect,
1824         .tpg_check_prod_mode_write_protect =
1825                                         tcm_qla2xxx_check_prod_write_protect,
1826         .tpg_check_prot_fabric_only     = tcm_qla2xxx_check_prot_fabric_only,
1827         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1828         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1829         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1830         .release_cmd                    = tcm_qla2xxx_release_cmd,
1831         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1832         .close_session                  = tcm_qla2xxx_close_session,
1833         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1834         .sess_get_initiator_sid         = NULL,
1835         .write_pending                  = tcm_qla2xxx_write_pending,
1836         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1837         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1838         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1839         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1840         .queue_status                   = tcm_qla2xxx_queue_status,
1841         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1842         .aborted_task                   = tcm_qla2xxx_aborted_task,
1843         /*
1844          * Setup function pointers for generic logic in
1845          * target_core_fabric_configfs.c
1846          */
1847         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1848         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1849         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1850         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1851         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1852
1853         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1854         .tfc_tpg_base_attrs             = tcm_qla2xxx_tpg_attrs,
1855         .tfc_tpg_attrib_attrs           = tcm_qla2xxx_tpg_attrib_attrs,
1856 };
1857
1858 static const struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1859         .module                         = THIS_MODULE,
1860         .name                           = "qla2xxx_npiv",
1861         .node_acl_size                  = sizeof(struct tcm_qla2xxx_nacl),
1862         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1863         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1864         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1865         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1866         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1867         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_mode,
1868         .tpg_check_prod_mode_write_protect =
1869             tcm_qla2xxx_check_prod_write_protect,
1870         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1871         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1872         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1873         .release_cmd                    = tcm_qla2xxx_release_cmd,
1874         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1875         .close_session                  = tcm_qla2xxx_close_session,
1876         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1877         .sess_get_initiator_sid         = NULL,
1878         .write_pending                  = tcm_qla2xxx_write_pending,
1879         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1880         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1881         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1882         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1883         .queue_status                   = tcm_qla2xxx_queue_status,
1884         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1885         .aborted_task                   = tcm_qla2xxx_aborted_task,
1886         /*
1887          * Setup function pointers for generic logic in
1888          * target_core_fabric_configfs.c
1889          */
1890         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1891         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1892         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1893         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1894         .fabric_init_nodeacl            = tcm_qla2xxx_init_nodeacl,
1895
1896         .tfc_wwn_attrs                  = tcm_qla2xxx_wwn_attrs,
1897         .tfc_tpg_base_attrs             = tcm_qla2xxx_npiv_tpg_attrs,
1898 };
1899
1900 static int tcm_qla2xxx_register_configfs(void)
1901 {
1902         int ret;
1903
1904         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1905             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1906             utsname()->machine);
1907
1908         ret = target_register_template(&tcm_qla2xxx_ops);
1909         if (ret)
1910                 return ret;
1911
1912         ret = target_register_template(&tcm_qla2xxx_npiv_ops);
1913         if (ret)
1914                 goto out_fabric;
1915
1916         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1917                                                 WQ_MEM_RECLAIM, 0);
1918         if (!tcm_qla2xxx_free_wq) {
1919                 ret = -ENOMEM;
1920                 goto out_fabric_npiv;
1921         }
1922
1923         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1924         if (!tcm_qla2xxx_cmd_wq) {
1925                 ret = -ENOMEM;
1926                 goto out_free_wq;
1927         }
1928
1929         return 0;
1930
1931 out_free_wq:
1932         destroy_workqueue(tcm_qla2xxx_free_wq);
1933 out_fabric_npiv:
1934         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1935 out_fabric:
1936         target_unregister_template(&tcm_qla2xxx_ops);
1937         return ret;
1938 }
1939
1940 static void tcm_qla2xxx_deregister_configfs(void)
1941 {
1942         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1943         destroy_workqueue(tcm_qla2xxx_free_wq);
1944
1945         target_unregister_template(&tcm_qla2xxx_ops);
1946         target_unregister_template(&tcm_qla2xxx_npiv_ops);
1947 }
1948
1949 static int __init tcm_qla2xxx_init(void)
1950 {
1951         int ret;
1952
1953         ret = tcm_qla2xxx_register_configfs();
1954         if (ret < 0)
1955                 return ret;
1956
1957         return 0;
1958 }
1959
1960 static void __exit tcm_qla2xxx_exit(void)
1961 {
1962         tcm_qla2xxx_deregister_configfs();
1963 }
1964
1965 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1966 MODULE_LICENSE("GPL");
1967 module_init(tcm_qla2xxx_init);
1968 module_exit(tcm_qla2xxx_exit);