drivers/scsi/qla2xxx/tcm_qla2xxx.c

   1 /*******************************************************************************
   2  * This file contains tcm implementation using v4 configfs fabric infrastructure
   3  * for QLogic target mode HBAs
   4  *
   5  * (c) Copyright 2010-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@daterainc.com>
   8  *
   9  * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
  10  * the TCM_FC / Open-FCoE.org fabric module.
  11  *
  12  * Copyright (c) 2010 Cisco Systems, Inc
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  ****************************************************************************/
  24
  25
  26 #include <linux/module.h>
  27 #include <linux/moduleparam.h>
  28 #include <generated/utsrelease.h>
  29 #include <linux/utsname.h>
  30 #include <linux/init.h>
  31 #include <linux/list.h>
  32 #include <linux/slab.h>
  33 #include <linux/kthread.h>
  34 #include <linux/types.h>
  35 #include <linux/string.h>
  36 #include <linux/configfs.h>
  37 #include <linux/ctype.h>
  38 #include <asm/unaligned.h>
  39 #include <scsi/scsi.h>
  40 #include <scsi/scsi_host.h>
  41 #include <scsi/scsi_device.h>
  42 #include <scsi/scsi_cmnd.h>
  43 #include <target/target_core_base.h>
  44 #include <target/target_core_fabric.h>
  45 #include <target/target_core_fabric_configfs.h>
  46 #include <target/target_core_configfs.h>
  47 #include <target/configfs_macros.h>
  48
  49 #include "qla_def.h"
  50 #include "qla_target.h"
  51 #include "tcm_qla2xxx.h"
  52
  53 struct workqueue_struct *tcm_qla2xxx_free_wq;
  54 struct workqueue_struct *tcm_qla2xxx_cmd_wq;
  55
  56 static int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
  57 {
  58         return 1;
  59 }
  60
  61 static int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
  62 {
  63         return 0;
  64 }
  65
  66 /*
  67  * Parse WWN.
  68  * If strict, we require lower-case hex and colon separators to be sure
  69  * the name is the same as what would be generated by ft_format_wwn()
  70  * so the name and wwn are mapped one-to-one.
  71  */
  72 static ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
  73 {
  74         const char *cp;
  75         char c;
  76         u32 nibble;
  77         u32 byte = 0;
  78         u32 pos = 0;
  79         u32 err;
  80
  81         *wwn = 0;
  82         for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
  83                 c = *cp;
  84                 if (c == '\n' && cp[1] == '\0')
  85                         continue;
  86                 if (strict && pos++ == 2 && byte++ < 7) {
  87                         pos = 0;
  88                         if (c == ':')
  89                                 continue;
  90                         err = 1;
  91                         goto fail;
  92                 }
  93                 if (c == '\0') {
  94                         err = 2;
  95                         if (strict && byte != 8)
  96                                 goto fail;
  97                         return cp - name;
  98                 }
  99                 err = 3;
 100                 if (isdigit(c))
 101                         nibble = c - '0';
 102                 else if (isxdigit(c) && (islower(c) || !strict))
 103                         nibble = tolower(c) - 'a' + 10;
 104                 else
 105                         goto fail;
 106                 *wwn = (*wwn << 4) | nibble;
 107         }
 108         err = 4;
 109 fail:
 110         pr_debug("err %u len %zu pos %u byte %u\n",
 111                         err, cp - name, pos, byte);
 112         return -1;
 113 }
 114
 115 static ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
 116 {
 117         u8 b[8];
 118
 119         put_unaligned_be64(wwn, b);
 120         return snprintf(buf, len,
 121                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 122                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
 123 }
 124
 125 static char *tcm_qla2xxx_get_fabric_name(void)
 126 {
 127         return "qla2xxx";
 128 }
 129
 130 /*
 131  * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
 132  */
 133 static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
 134 {
 135         unsigned int i, j;
 136         u8 wwn[8];
 137
 138         memset(wwn, 0, sizeof(wwn));
 139
 140         /* Validate and store the new name */
 141         for (i = 0, j = 0; i < 16; i++) {
 142                 int value;
 143
 144                 value = hex_to_bin(*ns++);
 145                 if (value >= 0)
 146                         j = (j << 4) | value;
 147                 else
 148                         return -EINVAL;
 149
 150                 if (i % 2) {
 151                         wwn[i/2] = j & 0xff;
 152                         j = 0;
 153                 }
 154         }
 155
 156         *nm = wwn_to_u64(wwn);
 157         return 0;
 158 }
 159
 160 /*
 161  * This parsing logic follows drivers/scsi/scsi_transport_fc.c:
 162  * store_fc_host_vport_create()
 163  */
 164 static int tcm_qla2xxx_npiv_parse_wwn(
 165         const char *name,
 166         size_t count,
 167         u64 *wwpn,
 168         u64 *wwnn)
 169 {
 170         unsigned int cnt = count;
 171         int rc;
 172
 173         *wwpn = 0;
 174         *wwnn = 0;
 175
 176         /* count may include a LF at end of string */
 177         if (name[cnt-1] == '\n')
 178                 cnt--;
 179
 180         /* validate we have enough characters for WWPN */
 181         if ((cnt != (16+1+16)) || (name[16] != ':'))
 182                 return -EINVAL;
 183
 184         rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
 185         if (rc != 0)
 186                 return rc;
 187
 188         rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
 189         if (rc != 0)
 190                 return rc;
 191
 192         return 0;
 193 }
 194
 195 static ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len,
 196                                         u64 wwpn, u64 wwnn)
 197 {
 198         u8 b[8], b2[8];
 199
 200         put_unaligned_be64(wwpn, b);
 201         put_unaligned_be64(wwnn, b2);
 202         return snprintf(buf, len,
 203                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
 204                 "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
 205                 b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
 206                 b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
 207 }
 208
 209 static char *tcm_qla2xxx_npiv_get_fabric_name(void)
 210 {
 211         return "qla2xxx_npiv";
 212 }
 213
 214 static u8 tcm_qla2xxx_get_fabric_proto_ident(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         struct tcm_qla2xxx_lport *lport = tpg->lport;
 219         u8 proto_id;
 220
 221         switch (lport->lport_proto_id) {
 222         case SCSI_PROTOCOL_FCP:
 223         default:
 224                 proto_id = fc_get_fabric_proto_ident(se_tpg);
 225                 break;
 226         }
 227
 228         return proto_id;
 229 }
 230
 231 static char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
 232 {
 233         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 234                                 struct tcm_qla2xxx_tpg, se_tpg);
 235         struct tcm_qla2xxx_lport *lport = tpg->lport;
 236
 237         return lport->lport_naa_name;
 238 }
 239
 240 static char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
 241 {
 242         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 243                                 struct tcm_qla2xxx_tpg, se_tpg);
 244         struct tcm_qla2xxx_lport *lport = tpg->lport;
 245
 246         return &lport->lport_npiv_name[0];
 247 }
 248
 249 static u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
 250 {
 251         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 252                                 struct tcm_qla2xxx_tpg, se_tpg);
 253         return tpg->lport_tpgt;
 254 }
 255
 256 static u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
 257 {
 258         return 1;
 259 }
 260
 261 static u32 tcm_qla2xxx_get_pr_transport_id(
 262         struct se_portal_group *se_tpg,
 263         struct se_node_acl *se_nacl,
 264         struct t10_pr_registration *pr_reg,
 265         int *format_code,
 266         unsigned char *buf)
 267 {
 268         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 269                                 struct tcm_qla2xxx_tpg, se_tpg);
 270         struct tcm_qla2xxx_lport *lport = tpg->lport;
 271         int ret = 0;
 272
 273         switch (lport->lport_proto_id) {
 274         case SCSI_PROTOCOL_FCP:
 275         default:
 276                 ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
 277                                         format_code, buf);
 278                 break;
 279         }
 280
 281         return ret;
 282 }
 283
 284 static u32 tcm_qla2xxx_get_pr_transport_id_len(
 285         struct se_portal_group *se_tpg,
 286         struct se_node_acl *se_nacl,
 287         struct t10_pr_registration *pr_reg,
 288         int *format_code)
 289 {
 290         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 291                                 struct tcm_qla2xxx_tpg, se_tpg);
 292         struct tcm_qla2xxx_lport *lport = tpg->lport;
 293         int ret = 0;
 294
 295         switch (lport->lport_proto_id) {
 296         case SCSI_PROTOCOL_FCP:
 297         default:
 298                 ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
 299                                         format_code);
 300                 break;
 301         }
 302
 303         return ret;
 304 }
 305
 306 static char *tcm_qla2xxx_parse_pr_out_transport_id(
 307         struct se_portal_group *se_tpg,
 308         const char *buf,
 309         u32 *out_tid_len,
 310         char **port_nexus_ptr)
 311 {
 312         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 313                                 struct tcm_qla2xxx_tpg, se_tpg);
 314         struct tcm_qla2xxx_lport *lport = tpg->lport;
 315         char *tid = NULL;
 316
 317         switch (lport->lport_proto_id) {
 318         case SCSI_PROTOCOL_FCP:
 319         default:
 320                 tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
 321                                         port_nexus_ptr);
 322                 break;
 323         }
 324
 325         return tid;
 326 }
 327
 328 static int tcm_qla2xxx_check_demo_mode(struct se_portal_group *se_tpg)
 329 {
 330         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 331                                 struct tcm_qla2xxx_tpg, se_tpg);
 332
 333         return tpg->tpg_attrib.generate_node_acls;
 334 }
 335
 336 static int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *se_tpg)
 337 {
 338         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 339                                 struct tcm_qla2xxx_tpg, se_tpg);
 340
 341         return tpg->tpg_attrib.cache_dynamic_acls;
 342 }
 343
 344 static int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *se_tpg)
 345 {
 346         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 347                                 struct tcm_qla2xxx_tpg, se_tpg);
 348
 349         return tpg->tpg_attrib.demo_mode_write_protect;
 350 }
 351
 352 static int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *se_tpg)
 353 {
 354         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 355                                 struct tcm_qla2xxx_tpg, se_tpg);
 356
 357         return tpg->tpg_attrib.prod_mode_write_protect;
 358 }
 359
 360 static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
 361 {
 362         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 363                                 struct tcm_qla2xxx_tpg, se_tpg);
 364
 365         return tpg->tpg_attrib.demo_mode_login_only;
 366 }
 367
 368 static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
 369         struct se_portal_group *se_tpg)
 370 {
 371         struct tcm_qla2xxx_nacl *nacl;
 372
 373         nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
 374         if (!nacl) {
 375                 pr_err("Unable to allocate struct tcm_qla2xxx_nacl\n");
 376                 return NULL;
 377         }
 378
 379         return &nacl->se_node_acl;
 380 }
 381
 382 static void tcm_qla2xxx_release_fabric_acl(
 383         struct se_portal_group *se_tpg,
 384         struct se_node_acl *se_nacl)
 385 {
 386         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 387                         struct tcm_qla2xxx_nacl, se_node_acl);
 388         kfree(nacl);
 389 }
 390
 391 static u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
 392 {
 393         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 394                                 struct tcm_qla2xxx_tpg, se_tpg);
 395
 396         return tpg->lport_tpgt;
 397 }
 398
 399 static void tcm_qla2xxx_complete_mcmd(struct work_struct *work)
 400 {
 401         struct qla_tgt_mgmt_cmd *mcmd = container_of(work,
 402                         struct qla_tgt_mgmt_cmd, free_work);
 403
 404         transport_generic_free_cmd(&mcmd->se_cmd, 0);
 405 }
 406
 407 /*
 408  * Called from qla_target_template->free_mcmd(), and will call
 409  * tcm_qla2xxx_release_cmd() via normal struct target_core_fabric_ops
 410  * release callback.  qla_hw_data->hardware_lock is expected to be held
 411  */
 412 static void tcm_qla2xxx_free_mcmd(struct qla_tgt_mgmt_cmd *mcmd)
 413 {
 414         INIT_WORK(&mcmd->free_work, tcm_qla2xxx_complete_mcmd);
 415         queue_work(tcm_qla2xxx_free_wq, &mcmd->free_work);
 416 }
 417
 418 static void tcm_qla2xxx_complete_free(struct work_struct *work)
 419 {
 420         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 421
 422         transport_generic_free_cmd(&cmd->se_cmd, 0);
 423 }
 424
 425 /*
 426  * Called from qla_target_template->free_cmd(), and will call
 427  * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
 428  * release callback.  qla_hw_data->hardware_lock is expected to be held
 429  */
 430 static void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
 431 {
 432         INIT_WORK(&cmd->work, tcm_qla2xxx_complete_free);
 433         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 434 }
 435
 436 /*
 437  * Called from struct target_core_fabric_ops->check_stop_free() context
 438  */
 439 static int tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
 440 {
 441         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
 442 }
 443
 444 /* tcm_qla2xxx_release_cmd - Callback from TCM Core to release underlying
 445  * fabric descriptor @se_cmd command to release
 446  */
 447 static void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
 448 {
 449         struct qla_tgt_cmd *cmd;
 450
 451         if (se_cmd->se_cmd_flags & SCF_SCSI_TMR_CDB) {
 452                 struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 453                                 struct qla_tgt_mgmt_cmd, se_cmd);
 454                 qlt_free_mcmd(mcmd);
 455                 return;
 456         }
 457
 458         cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
 459         qlt_free_cmd(cmd);
 460 }
 461
 462 static int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
 463 {
 464         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 465         struct scsi_qla_host *vha;
 466         unsigned long flags;
 467
 468         BUG_ON(!sess);
 469         vha = sess->vha;
 470
 471         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 472         target_sess_cmd_list_set_waiting(se_sess);
 473         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 474
 475         return 1;
 476 }
 477
 478 static void tcm_qla2xxx_close_session(struct se_session *se_sess)
 479 {
 480         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 481         struct scsi_qla_host *vha;
 482         unsigned long flags;
 483
 484         BUG_ON(!sess);
 485         vha = sess->vha;
 486
 487         spin_lock_irqsave(&vha->hw->hardware_lock, flags);
 488         qlt_unreg_sess(sess);
 489         spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
 490 }
 491
 492 static u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
 493 {
 494         return 0;
 495 }
 496
 497 static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
 498 {
 499         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 500                                 struct qla_tgt_cmd, se_cmd);
 501
 502         cmd->bufflen = se_cmd->data_length;
 503         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 504
 505         cmd->sg_cnt = se_cmd->t_data_nents;
 506         cmd->sg = se_cmd->t_data_sg;
 507
 508         /*
 509          * qla_target.c:qlt_rdy_to_xfer() will call pci_map_sg() to setup
 510          * the SGL mappings into PCIe memory for incoming FCP WRITE data.
 511          */
 512         return qlt_rdy_to_xfer(cmd);
 513 }
 514
 515 static int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
 516 {
 517         unsigned long flags;
 518         /*
 519          * Check for WRITE_PENDING status to determine if we need to wait for
 520          * CTIO aborts to be posted via hardware in tcm_qla2xxx_handle_data().
 521          */
 522         spin_lock_irqsave(&se_cmd->t_state_lock, flags);
 523         if (se_cmd->t_state == TRANSPORT_WRITE_PENDING ||
 524             se_cmd->t_state == TRANSPORT_COMPLETE_QF_WP) {
 525                 spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 526                 wait_for_completion_timeout(&se_cmd->t_transport_stop_comp,
 527                                                 3000);
 528                 return 0;
 529         }
 530         spin_unlock_irqrestore(&se_cmd->t_state_lock, flags);
 531
 532         return 0;
 533 }
 534
 535 static void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
 536 {
 537         return;
 538 }
 539
 540 static u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
 541 {
 542         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 543                                 struct qla_tgt_cmd, se_cmd);
 544
 545         return cmd->tag;
 546 }
 547
 548 static int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
 549 {
 550         return 0;
 551 }
 552
 553 /*
 554  * Called from process context in qla_target.c:qlt_do_work() code
 555  */
 556 static int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
 557         unsigned char *cdb, uint32_t data_length, int fcp_task_attr,
 558         int data_dir, int bidi)
 559 {
 560         struct se_cmd *se_cmd = &cmd->se_cmd;
 561         struct se_session *se_sess;
 562         struct qla_tgt_sess *sess;
 563         int flags = TARGET_SCF_ACK_KREF;
 564
 565         if (bidi)
 566                 flags |= TARGET_SCF_BIDI_OP;
 567
 568         sess = cmd->sess;
 569         if (!sess) {
 570                 pr_err("Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
 571                 return -EINVAL;
 572         }
 573
 574         se_sess = sess->se_sess;
 575         if (!se_sess) {
 576                 pr_err("Unable to locate active struct se_session\n");
 577                 return -EINVAL;
 578         }
 579
 580         return target_submit_cmd(se_cmd, se_sess, cdb, &cmd->sense_buffer[0],
 581                                 cmd->unpacked_lun, data_length, fcp_task_attr,
 582                                 data_dir, flags);
 583 }
 584
 585 static void tcm_qla2xxx_handle_data_work(struct work_struct *work)
 586 {
 587         struct qla_tgt_cmd *cmd = container_of(work, struct qla_tgt_cmd, work);
 588
 589         /*
 590          * Ensure that the complete FCP WRITE payload has been received.
 591          * Otherwise return an exception via CHECK_CONDITION status.
 592          */
 593         if (!cmd->write_data_transferred) {
 594                 /*
 595                  * Check if se_cmd has already been aborted via LUN_RESET, and
 596                  * waiting upon completion in tcm_qla2xxx_write_pending_status()
 597                  */
 598                 if (cmd->se_cmd.transport_state & CMD_T_ABORTED) {
 599                         complete(&cmd->se_cmd.t_transport_stop_comp);
 600                         return;
 601                 }
 602
 603                 transport_generic_request_failure(&cmd->se_cmd,
 604                                                   TCM_CHECK_CONDITION_ABORT_CMD);
 605                 return;
 606         }
 607
 608         return target_execute_cmd(&cmd->se_cmd);
 609 }
 610
 611 /*
 612  * Called from qla_target.c:qlt_do_ctio_completion()
 613  */
 614 static void tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
 615 {
 616         INIT_WORK(&cmd->work, tcm_qla2xxx_handle_data_work);
 617         queue_work(tcm_qla2xxx_free_wq, &cmd->work);
 618 }
 619
 620 /*
 621  * Called from qla_target.c:qlt_issue_task_mgmt()
 622  */
 623 static int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun,
 624         uint8_t tmr_func, uint32_t tag)
 625 {
 626         struct qla_tgt_sess *sess = mcmd->sess;
 627         struct se_cmd *se_cmd = &mcmd->se_cmd;
 628
 629         return target_submit_tmr(se_cmd, sess->se_sess, NULL, lun, mcmd,
 630                         tmr_func, GFP_ATOMIC, tag, TARGET_SCF_ACK_KREF);
 631 }
 632
 633 static int tcm_qla2xxx_queue_data_in(struct se_cmd *se_cmd)
 634 {
 635         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 636                                 struct qla_tgt_cmd, se_cmd);
 637
 638         cmd->bufflen = se_cmd->data_length;
 639         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 640         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 641
 642         cmd->sg_cnt = se_cmd->t_data_nents;
 643         cmd->sg = se_cmd->t_data_sg;
 644         cmd->offset = 0;
 645
 646         /*
 647          * Now queue completed DATA_IN the qla2xxx LLD and response ring
 648          */
 649         return qlt_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
 650                                 se_cmd->scsi_status);
 651 }
 652
 653 static int tcm_qla2xxx_queue_status(struct se_cmd *se_cmd)
 654 {
 655         struct qla_tgt_cmd *cmd = container_of(se_cmd,
 656                                 struct qla_tgt_cmd, se_cmd);
 657         int xmit_type = QLA_TGT_XMIT_STATUS;
 658
 659         cmd->bufflen = se_cmd->data_length;
 660         cmd->sg = NULL;
 661         cmd->sg_cnt = 0;
 662         cmd->offset = 0;
 663         cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
 664         cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
 665
 666         if (se_cmd->data_direction == DMA_FROM_DEVICE) {
 667                 /*
 668                  * For FCP_READ with CHECK_CONDITION status, clear cmd->bufflen
 669                  * for qla_tgt_xmit_response LLD code
 670                  */
 671                 if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
 672                         se_cmd->se_cmd_flags &= ~SCF_OVERFLOW_BIT;
 673                         se_cmd->residual_count = 0;
 674                 }
 675                 se_cmd->se_cmd_flags |= SCF_UNDERFLOW_BIT;
 676                 se_cmd->residual_count += se_cmd->data_length;
 677
 678                 cmd->bufflen = 0;
 679         }
 680         /*
 681          * Now queue status response to qla2xxx LLD code and response ring
 682          */
 683         return qlt_xmit_response(cmd, xmit_type, se_cmd->scsi_status);
 684 }
 685
 686 static void tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
 687 {
 688         struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
 689         struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
 690                                 struct qla_tgt_mgmt_cmd, se_cmd);
 691
 692         pr_debug("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
 693                         mcmd, se_tmr->function, se_tmr->response);
 694         /*
 695          * Do translation between TCM TM response codes and
 696          * QLA2xxx FC TM response codes.
 697          */
 698         switch (se_tmr->response) {
 699         case TMR_FUNCTION_COMPLETE:
 700                 mcmd->fc_tm_rsp = FC_TM_SUCCESS;
 701                 break;
 702         case TMR_TASK_DOES_NOT_EXIST:
 703                 mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
 704                 break;
 705         case TMR_FUNCTION_REJECTED:
 706                 mcmd->fc_tm_rsp = FC_TM_REJECT;
 707                 break;
 708         case TMR_LUN_DOES_NOT_EXIST:
 709         default:
 710                 mcmd->fc_tm_rsp = FC_TM_FAILED;
 711                 break;
 712         }
 713         /*
 714          * Queue the TM response to QLA2xxx LLD to build a
 715          * CTIO response packet.
 716          */
 717         qlt_xmit_tm_rsp(mcmd);
 718 }
 719
 720 /* Local pointer to allocated TCM configfs fabric module */
 721 struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
 722 struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
 723
 724 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *,
 725                         struct tcm_qla2xxx_nacl *, struct qla_tgt_sess *);
 726 /*
 727  * Expected to be called with struct qla_hw_data->hardware_lock held
 728  */
 729 static void tcm_qla2xxx_clear_nacl_from_fcport_map(struct qla_tgt_sess *sess)
 730 {
 731         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
 732         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 733         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 734         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 735                                 struct tcm_qla2xxx_lport, lport_wwn);
 736         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
 737                                 struct tcm_qla2xxx_nacl, se_node_acl);
 738         void *node;
 739
 740         pr_debug("fc_rport domain: port_id 0x%06x\n", nacl->nport_id);
 741
 742         node = btree_remove32(&lport->lport_fcport_map, nacl->nport_id);
 743         WARN_ON(node && (node != se_nacl));
 744
 745         pr_debug("Removed from fcport_map: %p for WWNN: 0x%016LX, port_id: 0x%06x\n",
 746             se_nacl, nacl->nport_wwnn, nacl->nport_id);
 747         /*
 748          * Now clear the se_nacl and session pointers from our HW lport lookup
 749          * table mapping for this initiator's fabric S_ID and LOOP_ID entries.
 750          *
 751          * This is done ahead of callbacks into tcm_qla2xxx_free_session() ->
 752          * target_wait_for_sess_cmds() before the session waits for outstanding
 753          * I/O to complete, to avoid a race between session shutdown execution
 754          * and incoming ATIOs or TMRs picking up a stale se_node_act reference.
 755          */
 756         tcm_qla2xxx_clear_sess_lookup(lport, nacl, sess);
 757 }
 758
 759 static void tcm_qla2xxx_release_session(struct kref *kref)
 760 {
 761         struct se_session *se_sess = container_of(kref,
 762                         struct se_session, sess_kref);
 763
 764         qlt_unreg_sess(se_sess->fabric_sess_ptr);
 765 }
 766
 767 static void tcm_qla2xxx_put_session(struct se_session *se_sess)
 768 {
 769         struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
 770         struct qla_hw_data *ha = sess->vha->hw;
 771         unsigned long flags;
 772
 773         spin_lock_irqsave(&ha->hardware_lock, flags);
 774         kref_put(&se_sess->sess_kref, tcm_qla2xxx_release_session);
 775         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 776 }
 777
 778 static void tcm_qla2xxx_put_sess(struct qla_tgt_sess *sess)
 779 {
 780         assert_spin_locked(&sess->vha->hw->hardware_lock);
 781         kref_put(&sess->se_sess->sess_kref, tcm_qla2xxx_release_session);
 782 }
 783
 784 static void tcm_qla2xxx_shutdown_sess(struct qla_tgt_sess *sess)
 785 {
 786         assert_spin_locked(&sess->vha->hw->hardware_lock);
 787         target_sess_cmd_list_set_waiting(sess->se_sess);
 788 }
 789
 790 static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
 791         struct se_portal_group *se_tpg,
 792         struct config_group *group,
 793         const char *name)
 794 {
 795         struct se_node_acl *se_nacl, *se_nacl_new;
 796         struct tcm_qla2xxx_nacl *nacl;
 797         u64 wwnn;
 798         u32 qla2xxx_nexus_depth;
 799
 800         if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
 801                 return ERR_PTR(-EINVAL);
 802
 803         se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
 804         if (!se_nacl_new)
 805                 return ERR_PTR(-ENOMEM);
 806 /* #warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl */
 807         qla2xxx_nexus_depth = 1;
 808
 809         /*
 810          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 811          * when converting a NodeACL from demo mode -> explict
 812          */
 813         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 814                                 name, qla2xxx_nexus_depth);
 815         if (IS_ERR(se_nacl)) {
 816                 tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
 817                 return se_nacl;
 818         }
 819         /*
 820          * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
 821          */
 822         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
 823         nacl->nport_wwnn = wwnn;
 824         tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
 825
 826         return se_nacl;
 827 }
 828
 829 static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
 830 {
 831         struct se_portal_group *se_tpg = se_acl->se_tpg;
 832         struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
 833                                 struct tcm_qla2xxx_nacl, se_node_acl);
 834
 835         core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
 836         kfree(nacl);
 837 }
 838
 839 /* Start items for tcm_qla2xxx_tpg_attrib_cit */
 840
 841 #define DEF_QLA_TPG_ATTRIB(name)                                        \
 842                                                                         \
 843 static ssize_t tcm_qla2xxx_tpg_attrib_show_##name(                      \
 844         struct se_portal_group *se_tpg,                                 \
 845         char *page)                                                     \
 846 {                                                                       \
 847         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 848                         struct tcm_qla2xxx_tpg, se_tpg);                \
 849                                                                         \
 850         return sprintf(page, "%u\n", tpg->tpg_attrib.name);     \
 851 }                                                                       \
 852                                                                         \
 853 static ssize_t tcm_qla2xxx_tpg_attrib_store_##name(                     \
 854         struct se_portal_group *se_tpg,                                 \
 855         const char *page,                                               \
 856         size_t count)                                                   \
 857 {                                                                       \
 858         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,              \
 859                         struct tcm_qla2xxx_tpg, se_tpg);                \
 860         unsigned long val;                                              \
 861         int ret;                                                        \
 862                                                                         \
 863         ret = kstrtoul(page, 0, &val);                                  \
 864         if (ret < 0) {                                                  \
 865                 pr_err("kstrtoul() failed with"                         \
 866                                 " ret: %d\n", ret);                     \
 867                 return -EINVAL;                                         \
 868         }                                                               \
 869         ret = tcm_qla2xxx_set_attrib_##name(tpg, val);                  \
 870                                                                         \
 871         return (!ret) ? count : -EINVAL;                                \
 872 }
 873
 874 #define DEF_QLA_TPG_ATTR_BOOL(_name)                                    \
 875                                                                         \
 876 static int tcm_qla2xxx_set_attrib_##_name(                              \
 877         struct tcm_qla2xxx_tpg *tpg,                                    \
 878         unsigned long val)                                              \
 879 {                                                                       \
 880         struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib;            \
 881                                                                         \
 882         if ((val != 0) && (val != 1)) {                                 \
 883                 pr_err("Illegal boolean value %lu\n", val);             \
 884                 return -EINVAL;                                         \
 885         }                                                               \
 886                                                                         \
 887         a->_name = val;                                                 \
 888         return 0;                                                       \
 889 }
 890
 891 #define QLA_TPG_ATTR(_name, _mode) \
 892         TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
 893
 894 /*
 895  * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
 896  */
 897 DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
 898 DEF_QLA_TPG_ATTRIB(generate_node_acls);
 899 QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 900
 901 /*
 902  Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
 903  */
 904 DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
 905 DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
 906 QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 907
 908 /*
 909  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
 910  */
 911 DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
 912 DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
 913 QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 914
 915 /*
 916  * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
 917  */
 918 DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
 919 DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
 920 QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 921
 922 /*
 923  * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
 924  */
 925 DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
 926 DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
 927 QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
 928
 929 static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
 930         &tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
 931         &tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
 932         &tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
 933         &tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
 934         &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
 935         NULL,
 936 };
 937
 938 /* End items for tcm_qla2xxx_tpg_attrib_cit */
 939
 940 static ssize_t tcm_qla2xxx_tpg_show_enable(
 941         struct se_portal_group *se_tpg,
 942         char *page)
 943 {
 944         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 945                         struct tcm_qla2xxx_tpg, se_tpg);
 946
 947         return snprintf(page, PAGE_SIZE, "%d\n",
 948                         atomic_read(&tpg->lport_tpg_enabled));
 949 }
 950
 951 static ssize_t tcm_qla2xxx_tpg_store_enable(
 952         struct se_portal_group *se_tpg,
 953         const char *page,
 954         size_t count)
 955 {
 956         struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
 957         struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
 958                         struct tcm_qla2xxx_lport, lport_wwn);
 959         struct scsi_qla_host *vha = lport->qla_vha;
 960         struct qla_hw_data *ha = vha->hw;
 961         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
 962                         struct tcm_qla2xxx_tpg, se_tpg);
 963         unsigned long op;
 964         int rc;
 965
 966         rc = kstrtoul(page, 0, &op);
 967         if (rc < 0) {
 968                 pr_err("kstrtoul() returned %d\n", rc);
 969                 return -EINVAL;
 970         }
 971         if ((op != 1) && (op != 0)) {
 972                 pr_err("Illegal value for tpg_enable: %lu\n", op);
 973                 return -EINVAL;
 974         }
 975
 976         if (op) {
 977                 atomic_set(&tpg->lport_tpg_enabled, 1);
 978                 qlt_enable_vha(vha);
 979         } else {
 980                 if (!ha->tgt.qla_tgt) {
 981                         pr_err("truct qla_hw_data *ha->tgt.qla_tgt is NULL\n");
 982                         return -ENODEV;
 983                 }
 984                 atomic_set(&tpg->lport_tpg_enabled, 0);
 985                 qlt_stop_phase1(ha->tgt.qla_tgt);
 986         }
 987
 988         return count;
 989 }
 990
 991 TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
 992
 993 static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
 994         &tcm_qla2xxx_tpg_enable.attr,
 995         NULL,
 996 };
 997
 998 static struct se_portal_group *tcm_qla2xxx_make_tpg(
 999         struct se_wwn *wwn,
1000         struct config_group *group,
1001         const char *name)
1002 {
1003         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1004                         struct tcm_qla2xxx_lport, lport_wwn);
1005         struct tcm_qla2xxx_tpg *tpg;
1006         unsigned long tpgt;
1007         int ret;
1008
1009         if (strstr(name, "tpgt_") != name)
1010                 return ERR_PTR(-EINVAL);
1011         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1012                 return ERR_PTR(-EINVAL);
1013
1014         if (!lport->qla_npiv_vp && (tpgt != 1)) {
1015                 pr_err("In non NPIV mode, a single TPG=1 is used for HW port mappings\n");
1016                 return ERR_PTR(-ENOSYS);
1017         }
1018
1019         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1020         if (!tpg) {
1021                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1022                 return ERR_PTR(-ENOMEM);
1023         }
1024         tpg->lport = lport;
1025         tpg->lport_tpgt = tpgt;
1026         /*
1027          * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic
1028          * NodeACLs
1029          */
1030         tpg->tpg_attrib.generate_node_acls = 1;
1031         tpg->tpg_attrib.demo_mode_write_protect = 1;
1032         tpg->tpg_attrib.cache_dynamic_acls = 1;
1033         tpg->tpg_attrib.demo_mode_login_only = 1;
1034
1035         ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
1036                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1037         if (ret < 0) {
1038                 kfree(tpg);
1039                 return NULL;
1040         }
1041         /*
1042          * Setup local TPG=1 pointer for non NPIV mode.
1043          */
1044         if (lport->qla_npiv_vp == NULL)
1045                 lport->tpg_1 = tpg;
1046
1047         return &tpg->se_tpg;
1048 }
1049
1050 static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
1051 {
1052         struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
1053                         struct tcm_qla2xxx_tpg, se_tpg);
1054         struct tcm_qla2xxx_lport *lport = tpg->lport;
1055         struct scsi_qla_host *vha = lport->qla_vha;
1056         struct qla_hw_data *ha = vha->hw;
1057         /*
1058          * Call into qla2x_target.c LLD logic to shutdown the active
1059          * FC Nexuses and disable target mode operation for this qla_hw_data
1060          */
1061         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stop)
1062                 qlt_stop_phase1(ha->tgt.qla_tgt);
1063
1064         core_tpg_deregister(se_tpg);
1065         /*
1066          * Clear local TPG=1 pointer for non NPIV mode.
1067          */
1068         if (lport->qla_npiv_vp == NULL)
1069                 lport->tpg_1 = NULL;
1070
1071         kfree(tpg);
1072 }
1073
1074 static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
1075         struct se_wwn *wwn,
1076         struct config_group *group,
1077         const char *name)
1078 {
1079         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1080                         struct tcm_qla2xxx_lport, lport_wwn);
1081         struct tcm_qla2xxx_tpg *tpg;
1082         unsigned long tpgt;
1083         int ret;
1084
1085         if (strstr(name, "tpgt_") != name)
1086                 return ERR_PTR(-EINVAL);
1087         if (kstrtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
1088                 return ERR_PTR(-EINVAL);
1089
1090         tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
1091         if (!tpg) {
1092                 pr_err("Unable to allocate struct tcm_qla2xxx_tpg\n");
1093                 return ERR_PTR(-ENOMEM);
1094         }
1095         tpg->lport = lport;
1096         tpg->lport_tpgt = tpgt;
1097
1098         ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
1099                                 &tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
1100         if (ret < 0) {
1101                 kfree(tpg);
1102                 return NULL;
1103         }
1104         return &tpg->se_tpg;
1105 }
1106
1107 /*
1108  * Expected to be called with struct qla_hw_data->hardware_lock held
1109  */
1110 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
1111         scsi_qla_host_t *vha,
1112         const uint8_t *s_id)
1113 {
1114         struct qla_hw_data *ha = vha->hw;
1115         struct tcm_qla2xxx_lport *lport;
1116         struct se_node_acl *se_nacl;
1117         struct tcm_qla2xxx_nacl *nacl;
1118         u32 key;
1119
1120         lport = ha->tgt.target_lport_ptr;
1121         if (!lport) {
1122                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1123                 dump_stack();
1124                 return NULL;
1125         }
1126
1127         key = (((unsigned long)s_id[0] << 16) |
1128                ((unsigned long)s_id[1] << 8) |
1129                (unsigned long)s_id[2]);
1130         pr_debug("find_sess_by_s_id: 0x%06x\n", key);
1131
1132         se_nacl = btree_lookup32(&lport->lport_fcport_map, key);
1133         if (!se_nacl) {
1134                 pr_debug("Unable to locate s_id: 0x%06x\n", key);
1135                 return NULL;
1136         }
1137         pr_debug("find_sess_by_s_id: located se_nacl: %p, initiatorname: %s\n",
1138             se_nacl, se_nacl->initiatorname);
1139
1140         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1141         if (!nacl->qla_tgt_sess) {
1142                 pr_err("Unable to locate struct qla_tgt_sess\n");
1143                 return NULL;
1144         }
1145
1146         return nacl->qla_tgt_sess;
1147 }
1148
1149 /*
1150  * Expected to be called with struct qla_hw_data->hardware_lock held
1151  */
1152 static void tcm_qla2xxx_set_sess_by_s_id(
1153         struct tcm_qla2xxx_lport *lport,
1154         struct se_node_acl *new_se_nacl,
1155         struct tcm_qla2xxx_nacl *nacl,
1156         struct se_session *se_sess,
1157         struct qla_tgt_sess *qla_tgt_sess,
1158         uint8_t *s_id)
1159 {
1160         u32 key;
1161         void *slot;
1162         int rc;
1163
1164         key = (((unsigned long)s_id[0] << 16) |
1165                ((unsigned long)s_id[1] << 8) |
1166                (unsigned long)s_id[2]);
1167         pr_debug("set_sess_by_s_id: %06x\n", key);
1168
1169         slot = btree_lookup32(&lport->lport_fcport_map, key);
1170         if (!slot) {
1171                 if (new_se_nacl) {
1172                         pr_debug("Setting up new fc_port entry to new_se_nacl\n");
1173                         nacl->nport_id = key;
1174                         rc = btree_insert32(&lport->lport_fcport_map, key,
1175                                         new_se_nacl, GFP_ATOMIC);
1176                         if (rc)
1177                                 printk(KERN_ERR "Unable to insert s_id into fcport_map: %06x\n",
1178                                     (int)key);
1179                 } else {
1180                         pr_debug("Wiping nonexisting fc_port entry\n");
1181                 }
1182
1183                 qla_tgt_sess->se_sess = se_sess;
1184                 nacl->qla_tgt_sess = qla_tgt_sess;
1185                 return;
1186         }
1187
1188         if (nacl->qla_tgt_sess) {
1189                 if (new_se_nacl == NULL) {
1190                         pr_debug("Clearing existing nacl->qla_tgt_sess and fc_port entry\n");
1191                         btree_remove32(&lport->lport_fcport_map, key);
1192                         nacl->qla_tgt_sess = NULL;
1193                         return;
1194                 }
1195                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_port entry\n");
1196                 btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1197                 qla_tgt_sess->se_sess = se_sess;
1198                 nacl->qla_tgt_sess = qla_tgt_sess;
1199                 return;
1200         }
1201
1202         if (new_se_nacl == NULL) {
1203                 pr_debug("Clearing existing fc_port entry\n");
1204                 btree_remove32(&lport->lport_fcport_map, key);
1205                 return;
1206         }
1207
1208         pr_debug("Replacing existing fc_port entry w/o active nacl->qla_tgt_sess\n");
1209         btree_update32(&lport->lport_fcport_map, key, new_se_nacl);
1210         qla_tgt_sess->se_sess = se_sess;
1211         nacl->qla_tgt_sess = qla_tgt_sess;
1212
1213         pr_debug("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p, initiatorname: %s\n",
1214             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1215 }
1216
1217 /*
1218  * Expected to be called with struct qla_hw_data->hardware_lock held
1219  */
1220 static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
1221         scsi_qla_host_t *vha,
1222         const uint16_t loop_id)
1223 {
1224         struct qla_hw_data *ha = vha->hw;
1225         struct tcm_qla2xxx_lport *lport;
1226         struct se_node_acl *se_nacl;
1227         struct tcm_qla2xxx_nacl *nacl;
1228         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1229
1230         lport = ha->tgt.target_lport_ptr;
1231         if (!lport) {
1232                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1233                 dump_stack();
1234                 return NULL;
1235         }
1236
1237         pr_debug("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1238
1239         fc_loopid = lport->lport_loopid_map + loop_id;
1240         se_nacl = fc_loopid->se_nacl;
1241         if (!se_nacl) {
1242                 pr_debug("Unable to locate se_nacl by loop_id: 0x%04x\n",
1243                     loop_id);
1244                 return NULL;
1245         }
1246
1247         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1248
1249         if (!nacl->qla_tgt_sess) {
1250                 pr_err("Unable to locate struct qla_tgt_sess\n");
1251                 return NULL;
1252         }
1253
1254         return nacl->qla_tgt_sess;
1255 }
1256
1257 /*
1258  * Expected to be called with struct qla_hw_data->hardware_lock held
1259  */
1260 static void tcm_qla2xxx_set_sess_by_loop_id(
1261         struct tcm_qla2xxx_lport *lport,
1262         struct se_node_acl *new_se_nacl,
1263         struct tcm_qla2xxx_nacl *nacl,
1264         struct se_session *se_sess,
1265         struct qla_tgt_sess *qla_tgt_sess,
1266         uint16_t loop_id)
1267 {
1268         struct se_node_acl *saved_nacl;
1269         struct tcm_qla2xxx_fc_loopid *fc_loopid;
1270
1271         pr_debug("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
1272
1273         fc_loopid = &((struct tcm_qla2xxx_fc_loopid *)
1274                         lport->lport_loopid_map)[loop_id];
1275
1276         saved_nacl = fc_loopid->se_nacl;
1277         if (!saved_nacl) {
1278                 pr_debug("Setting up new fc_loopid->se_nacl to new_se_nacl\n");
1279                 fc_loopid->se_nacl = new_se_nacl;
1280                 if (qla_tgt_sess->se_sess != se_sess)
1281                         qla_tgt_sess->se_sess = se_sess;
1282                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1283                         nacl->qla_tgt_sess = qla_tgt_sess;
1284                 return;
1285         }
1286
1287         if (nacl->qla_tgt_sess) {
1288                 if (new_se_nacl == NULL) {
1289                         pr_debug("Clearing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1290                         fc_loopid->se_nacl = NULL;
1291                         nacl->qla_tgt_sess = NULL;
1292                         return;
1293                 }
1294
1295                 pr_debug("Replacing existing nacl->qla_tgt_sess and fc_loopid->se_nacl\n");
1296                 fc_loopid->se_nacl = new_se_nacl;
1297                 if (qla_tgt_sess->se_sess != se_sess)
1298                         qla_tgt_sess->se_sess = se_sess;
1299                 if (nacl->qla_tgt_sess != qla_tgt_sess)
1300                         nacl->qla_tgt_sess = qla_tgt_sess;
1301                 return;
1302         }
1303
1304         if (new_se_nacl == NULL) {
1305                 pr_debug("Clearing fc_loopid->se_nacl\n");
1306                 fc_loopid->se_nacl = NULL;
1307                 return;
1308         }
1309
1310         pr_debug("Replacing existing fc_loopid->se_nacl w/o active nacl->qla_tgt_sess\n");
1311         fc_loopid->se_nacl = new_se_nacl;
1312         if (qla_tgt_sess->se_sess != se_sess)
1313                 qla_tgt_sess->se_sess = se_sess;
1314         if (nacl->qla_tgt_sess != qla_tgt_sess)
1315                 nacl->qla_tgt_sess = qla_tgt_sess;
1316
1317         pr_debug("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p, initiatorname: %s\n",
1318             nacl->qla_tgt_sess, new_se_nacl, new_se_nacl->initiatorname);
1319 }
1320
1321 /*
1322  * Should always be called with qla_hw_data->hardware_lock held.
1323  */
1324 static void tcm_qla2xxx_clear_sess_lookup(struct tcm_qla2xxx_lport *lport,
1325                 struct tcm_qla2xxx_nacl *nacl, struct qla_tgt_sess *sess)
1326 {
1327         struct se_session *se_sess = sess->se_sess;
1328         unsigned char be_sid[3];
1329
1330         be_sid[0] = sess->s_id.b.domain;
1331         be_sid[1] = sess->s_id.b.area;
1332         be_sid[2] = sess->s_id.b.al_pa;
1333
1334         tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
1335                                 sess, be_sid);
1336         tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
1337                                 sess, sess->loop_id);
1338 }
1339
1340 static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
1341 {
1342         struct qla_tgt *tgt = sess->tgt;
1343         struct qla_hw_data *ha = tgt->ha;
1344         struct se_session *se_sess;
1345         struct se_node_acl *se_nacl;
1346         struct tcm_qla2xxx_lport *lport;
1347         struct tcm_qla2xxx_nacl *nacl;
1348
1349         BUG_ON(in_interrupt());
1350
1351         se_sess = sess->se_sess;
1352         if (!se_sess) {
1353                 pr_err("struct qla_tgt_sess->se_sess is NULL\n");
1354                 dump_stack();
1355                 return;
1356         }
1357         se_nacl = se_sess->se_node_acl;
1358         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1359
1360         lport = ha->tgt.target_lport_ptr;
1361         if (!lport) {
1362                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1363                 dump_stack();
1364                 return;
1365         }
1366         target_wait_for_sess_cmds(se_sess);
1367
1368         transport_deregister_session_configfs(sess->se_sess);
1369         transport_deregister_session(sess->se_sess);
1370 }
1371
1372 /*
1373  * Called via qlt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
1374  * to locate struct se_node_acl
1375  */
1376 static int tcm_qla2xxx_check_initiator_node_acl(
1377         scsi_qla_host_t *vha,
1378         unsigned char *fc_wwpn,
1379         void *qla_tgt_sess,
1380         uint8_t *s_id,
1381         uint16_t loop_id)
1382 {
1383         struct qla_hw_data *ha = vha->hw;
1384         struct tcm_qla2xxx_lport *lport;
1385         struct tcm_qla2xxx_tpg *tpg;
1386         struct tcm_qla2xxx_nacl *nacl;
1387         struct se_portal_group *se_tpg;
1388         struct se_node_acl *se_nacl;
1389         struct se_session *se_sess;
1390         struct qla_tgt_sess *sess = qla_tgt_sess;
1391         unsigned char port_name[36];
1392         unsigned long flags;
1393
1394         lport = ha->tgt.target_lport_ptr;
1395         if (!lport) {
1396                 pr_err("Unable to locate struct tcm_qla2xxx_lport\n");
1397                 dump_stack();
1398                 return -EINVAL;
1399         }
1400         /*
1401          * Locate the TPG=1 reference..
1402          */
1403         tpg = lport->tpg_1;
1404         if (!tpg) {
1405                 pr_err("Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
1406                 return -EINVAL;
1407         }
1408         se_tpg = &tpg->se_tpg;
1409
1410         se_sess = transport_init_session();
1411         if (IS_ERR(se_sess)) {
1412                 pr_err("Unable to initialize struct se_session\n");
1413                 return PTR_ERR(se_sess);
1414         }
1415         /*
1416          * Format the FCP Initiator port_name into colon seperated values to
1417          * match the format by tcm_qla2xxx explict ConfigFS NodeACLs.
1418          */
1419         memset(&port_name, 0, 36);
1420         snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
1421                 fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
1422                 fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
1423         /*
1424          * Locate our struct se_node_acl either from an explict NodeACL created
1425          * via ConfigFS, or via running in TPG demo mode.
1426          */
1427         se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg,
1428                                         port_name);
1429         if (!se_sess->se_node_acl) {
1430                 transport_free_session(se_sess);
1431                 return -EINVAL;
1432         }
1433         se_nacl = se_sess->se_node_acl;
1434         nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
1435         /*
1436          * And now setup the new se_nacl and session pointers into our HW lport
1437          * mappings for fabric S_ID and LOOP_ID.
1438          */
1439         spin_lock_irqsave(&ha->hardware_lock, flags);
1440         tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
1441                         qla_tgt_sess, s_id);
1442         tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
1443                         qla_tgt_sess, loop_id);
1444         spin_unlock_irqrestore(&ha->hardware_lock, flags);
1445         /*
1446          * Finally register the new FC Nexus with TCM
1447          */
1448         __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
1449
1450         return 0;
1451 }
1452
1453 static void tcm_qla2xxx_update_sess(struct qla_tgt_sess *sess, port_id_t s_id,
1454                                     uint16_t loop_id, bool conf_compl_supported)
1455 {
1456         struct qla_tgt *tgt = sess->tgt;
1457         struct qla_hw_data *ha = tgt->ha;
1458         struct tcm_qla2xxx_lport *lport = ha->tgt.target_lport_ptr;
1459         struct se_node_acl *se_nacl = sess->se_sess->se_node_acl;
1460         struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
1461                         struct tcm_qla2xxx_nacl, se_node_acl);
1462         u32 key;
1463
1464
1465         if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
1466                 pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
1467                     sess, sess->port_name,
1468                     sess->loop_id, loop_id, sess->s_id.b.domain,
1469                     sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
1470                     s_id.b.area, s_id.b.al_pa);
1471
1472         if (sess->loop_id != loop_id) {
1473                 /*
1474                  * Because we can shuffle loop IDs around and we
1475                  * update different sessions non-atomically, we might
1476                  * have overwritten this session's old loop ID
1477                  * already, and we might end up overwriting some other
1478                  * session that will be updated later.  So we have to
1479                  * be extra careful and we can't warn about those things...
1480                  */
1481                 if (lport->lport_loopid_map[sess->loop_id].se_nacl == se_nacl)
1482                         lport->lport_loopid_map[sess->loop_id].se_nacl = NULL;
1483
1484                 lport->lport_loopid_map[loop_id].se_nacl = se_nacl;
1485
1486                 sess->loop_id = loop_id;
1487         }
1488
1489         if (sess->s_id.b24 != s_id.b24) {
1490                 key = (((u32) sess->s_id.b.domain << 16) |
1491                        ((u32) sess->s_id.b.area   <<  8) |
1492                        ((u32) sess->s_id.b.al_pa));
1493
1494                 if (btree_lookup32(&lport->lport_fcport_map, key))
1495                         WARN(btree_remove32(&lport->lport_fcport_map, key) != se_nacl,
1496                              "Found wrong se_nacl when updating s_id %x:%x:%x\n",
1497                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1498                 else
1499                         WARN(1, "No lport_fcport_map entry for s_id %x:%x:%x\n",
1500                              sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa);
1501
1502                 key = (((u32) s_id.b.domain << 16) |
1503                        ((u32) s_id.b.area   <<  8) |
1504                        ((u32) s_id.b.al_pa));
1505
1506                 if (btree_lookup32(&lport->lport_fcport_map, key)) {
1507                         WARN(1, "Already have lport_fcport_map entry for s_id %x:%x:%x\n",
1508                              s_id.b.domain, s_id.b.area, s_id.b.al_pa);
1509                         btree_update32(&lport->lport_fcport_map, key, se_nacl);
1510                 } else {
1511                         btree_insert32(&lport->lport_fcport_map, key, se_nacl, GFP_ATOMIC);
1512                 }
1513
1514                 sess->s_id = s_id;
1515                 nacl->nport_id = key;
1516         }
1517
1518         sess->conf_compl_supported = conf_compl_supported;
1519 }
1520
1521 /*
1522  * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
1523  */
1524 static struct qla_tgt_func_tmpl tcm_qla2xxx_template = {
1525         .handle_cmd             = tcm_qla2xxx_handle_cmd,
1526         .handle_data            = tcm_qla2xxx_handle_data,
1527         .handle_tmr             = tcm_qla2xxx_handle_tmr,
1528         .free_cmd               = tcm_qla2xxx_free_cmd,
1529         .free_mcmd              = tcm_qla2xxx_free_mcmd,
1530         .free_session           = tcm_qla2xxx_free_session,
1531         .update_sess            = tcm_qla2xxx_update_sess,
1532         .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
1533         .find_sess_by_s_id      = tcm_qla2xxx_find_sess_by_s_id,
1534         .find_sess_by_loop_id   = tcm_qla2xxx_find_sess_by_loop_id,
1535         .clear_nacl_from_fcport_map = tcm_qla2xxx_clear_nacl_from_fcport_map,
1536         .put_sess               = tcm_qla2xxx_put_sess,
1537         .shutdown_sess          = tcm_qla2xxx_shutdown_sess,
1538 };
1539
1540 static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
1541 {
1542         int rc;
1543
1544         rc = btree_init32(&lport->lport_fcport_map);
1545         if (rc) {
1546                 pr_err("Unable to initialize lport->lport_fcport_map btree\n");
1547                 return rc;
1548         }
1549
1550         lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
1551                                 65536);
1552         if (!lport->lport_loopid_map) {
1553                 pr_err("Unable to allocate lport->lport_loopid_map of %zu bytes\n",
1554                     sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1555                 btree_destroy32(&lport->lport_fcport_map);
1556                 return -ENOMEM;
1557         }
1558         memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
1559                * 65536);
1560         pr_debug("qla2xxx: Allocated lport_loopid_map of %zu bytes\n",
1561                sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
1562         return 0;
1563 }
1564
1565 static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
1566 {
1567         struct qla_hw_data *ha = vha->hw;
1568         struct tcm_qla2xxx_lport *lport;
1569         /*
1570          * Setup local pointer to vha, NPIV VP pointer (if present) and
1571          * vha->tcm_lport pointer
1572          */
1573         lport = (struct tcm_qla2xxx_lport *)ha->tgt.target_lport_ptr;
1574         lport->qla_vha = vha;
1575
1576         return 0;
1577 }
1578
1579 static struct se_wwn *tcm_qla2xxx_make_lport(
1580         struct target_fabric_configfs *tf,
1581         struct config_group *group,
1582         const char *name)
1583 {
1584         struct tcm_qla2xxx_lport *lport;
1585         u64 wwpn;
1586         int ret = -ENODEV;
1587
1588         if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
1589                 return ERR_PTR(-EINVAL);
1590
1591         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1592         if (!lport) {
1593                 pr_err("Unable to allocate struct tcm_qla2xxx_lport\n");
1594                 return ERR_PTR(-ENOMEM);
1595         }
1596         lport->lport_wwpn = wwpn;
1597         tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN,
1598                                 wwpn);
1599         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) wwpn);
1600
1601         ret = tcm_qla2xxx_init_lport(lport);
1602         if (ret != 0)
1603                 goto out;
1604
1605         ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
1606                                 tcm_qla2xxx_lport_register_cb, lport);
1607         if (ret != 0)
1608                 goto out_lport;
1609
1610         return &lport->lport_wwn;
1611 out_lport:
1612         vfree(lport->lport_loopid_map);
1613         btree_destroy32(&lport->lport_fcport_map);
1614 out:
1615         kfree(lport);
1616         return ERR_PTR(ret);
1617 }
1618
1619 static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
1620 {
1621         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1622                         struct tcm_qla2xxx_lport, lport_wwn);
1623         struct scsi_qla_host *vha = lport->qla_vha;
1624         struct qla_hw_data *ha = vha->hw;
1625         struct se_node_acl *node;
1626         u32 key = 0;
1627
1628         /*
1629          * Call into qla2x_target.c LLD logic to complete the
1630          * shutdown of struct qla_tgt after the call to
1631          * qlt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
1632          */
1633         if (ha->tgt.qla_tgt && !ha->tgt.qla_tgt->tgt_stopped)
1634                 qlt_stop_phase2(ha->tgt.qla_tgt);
1635
1636         qlt_lport_deregister(vha);
1637
1638         vfree(lport->lport_loopid_map);
1639         btree_for_each_safe32(&lport->lport_fcport_map, key, node)
1640                 btree_remove32(&lport->lport_fcport_map, key);
1641         btree_destroy32(&lport->lport_fcport_map);
1642         kfree(lport);
1643 }
1644
1645 static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
1646         struct target_fabric_configfs *tf,
1647         struct config_group *group,
1648         const char *name)
1649 {
1650         struct tcm_qla2xxx_lport *lport;
1651         u64 npiv_wwpn, npiv_wwnn;
1652         int ret;
1653
1654         if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
1655                                 &npiv_wwpn, &npiv_wwnn) < 0)
1656                 return ERR_PTR(-EINVAL);
1657
1658         lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
1659         if (!lport) {
1660                 pr_err("Unable to allocate struct tcm_qla2xxx_lport for NPIV\n");
1661                 return ERR_PTR(-ENOMEM);
1662         }
1663         lport->lport_npiv_wwpn = npiv_wwpn;
1664         lport->lport_npiv_wwnn = npiv_wwnn;
1665         tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
1666                         TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
1667         sprintf(lport->lport_naa_name, "naa.%016llx", (unsigned long long) npiv_wwpn);
1668
1669 /* FIXME: tcm_qla2xxx_npiv_make_lport */
1670         ret = -ENOSYS;
1671         if (ret != 0)
1672                 goto out;
1673
1674         return &lport->lport_wwn;
1675 out:
1676         kfree(lport);
1677         return ERR_PTR(ret);
1678 }
1679
1680 static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
1681 {
1682         struct tcm_qla2xxx_lport *lport = container_of(wwn,
1683                         struct tcm_qla2xxx_lport, lport_wwn);
1684         struct scsi_qla_host *vha = lport->qla_vha;
1685         struct Scsi_Host *sh = vha->host;
1686         /*
1687          * Notify libfc that we want to release the lport->npiv_vport
1688          */
1689         fc_vport_terminate(lport->npiv_vport);
1690
1691         scsi_host_put(sh);
1692         kfree(lport);
1693 }
1694
1695
1696 static ssize_t tcm_qla2xxx_wwn_show_attr_version(
1697         struct target_fabric_configfs *tf,
1698         char *page)
1699 {
1700         return sprintf(page,
1701             "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s on "
1702             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1703             utsname()->machine);
1704 }
1705
1706 TF_WWN_ATTR_RO(tcm_qla2xxx, version);
1707
1708 static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
1709         &tcm_qla2xxx_wwn_version.attr,
1710         NULL,
1711 };
1712
1713 static struct target_core_fabric_ops tcm_qla2xxx_ops = {
1714         .get_fabric_name                = tcm_qla2xxx_get_fabric_name,
1715         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1716         .tpg_get_wwn                    = tcm_qla2xxx_get_fabric_wwn,
1717         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1718         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1719         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1720         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1721         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1722         .tpg_check_demo_mode            = tcm_qla2xxx_check_demo_mode,
1723         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_demo_mode_cache,
1724         .tpg_check_demo_mode_write_protect =
1725                                         tcm_qla2xxx_check_demo_write_protect,
1726         .tpg_check_prod_mode_write_protect =
1727                                         tcm_qla2xxx_check_prod_write_protect,
1728         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1729         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1730         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1731         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1732         .check_stop_free                = tcm_qla2xxx_check_stop_free,
1733         .release_cmd                    = tcm_qla2xxx_release_cmd,
1734         .put_session                    = tcm_qla2xxx_put_session,
1735         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1736         .close_session                  = tcm_qla2xxx_close_session,
1737         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1738         .sess_get_initiator_sid         = NULL,
1739         .write_pending                  = tcm_qla2xxx_write_pending,
1740         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1741         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1742         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1743         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1744         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1745         .queue_status                   = tcm_qla2xxx_queue_status,
1746         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1747         /*
1748          * Setup function pointers for generic logic in
1749          * target_core_fabric_configfs.c
1750          */
1751         .fabric_make_wwn                = tcm_qla2xxx_make_lport,
1752         .fabric_drop_wwn                = tcm_qla2xxx_drop_lport,
1753         .fabric_make_tpg                = tcm_qla2xxx_make_tpg,
1754         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1755         .fabric_post_link               = NULL,
1756         .fabric_pre_unlink              = NULL,
1757         .fabric_make_np                 = NULL,
1758         .fabric_drop_np                 = NULL,
1759         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1760         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1761 };
1762
1763 static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
1764         .get_fabric_name                = tcm_qla2xxx_npiv_get_fabric_name,
1765         .get_fabric_proto_ident         = tcm_qla2xxx_get_fabric_proto_ident,
1766         .tpg_get_wwn                    = tcm_qla2xxx_npiv_get_fabric_wwn,
1767         .tpg_get_tag                    = tcm_qla2xxx_get_tag,
1768         .tpg_get_default_depth          = tcm_qla2xxx_get_default_depth,
1769         .tpg_get_pr_transport_id        = tcm_qla2xxx_get_pr_transport_id,
1770         .tpg_get_pr_transport_id_len    = tcm_qla2xxx_get_pr_transport_id_len,
1771         .tpg_parse_pr_out_transport_id  = tcm_qla2xxx_parse_pr_out_transport_id,
1772         .tpg_check_demo_mode            = tcm_qla2xxx_check_false,
1773         .tpg_check_demo_mode_cache      = tcm_qla2xxx_check_true,
1774         .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
1775         .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
1776         .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
1777         .tpg_alloc_fabric_acl           = tcm_qla2xxx_alloc_fabric_acl,
1778         .tpg_release_fabric_acl         = tcm_qla2xxx_release_fabric_acl,
1779         .tpg_get_inst_index             = tcm_qla2xxx_tpg_get_inst_index,
1780         .release_cmd                    = tcm_qla2xxx_release_cmd,
1781         .put_session                    = tcm_qla2xxx_put_session,
1782         .shutdown_session               = tcm_qla2xxx_shutdown_session,
1783         .close_session                  = tcm_qla2xxx_close_session,
1784         .sess_get_index                 = tcm_qla2xxx_sess_get_index,
1785         .sess_get_initiator_sid         = NULL,
1786         .write_pending                  = tcm_qla2xxx_write_pending,
1787         .write_pending_status           = tcm_qla2xxx_write_pending_status,
1788         .set_default_node_attributes    = tcm_qla2xxx_set_default_node_attrs,
1789         .get_task_tag                   = tcm_qla2xxx_get_task_tag,
1790         .get_cmd_state                  = tcm_qla2xxx_get_cmd_state,
1791         .queue_data_in                  = tcm_qla2xxx_queue_data_in,
1792         .queue_status                   = tcm_qla2xxx_queue_status,
1793         .queue_tm_rsp                   = tcm_qla2xxx_queue_tm_rsp,
1794         /*
1795          * Setup function pointers for generic logic in
1796          * target_core_fabric_configfs.c
1797          */
1798         .fabric_make_wwn                = tcm_qla2xxx_npiv_make_lport,
1799         .fabric_drop_wwn                = tcm_qla2xxx_npiv_drop_lport,
1800         .fabric_make_tpg                = tcm_qla2xxx_npiv_make_tpg,
1801         .fabric_drop_tpg                = tcm_qla2xxx_drop_tpg,
1802         .fabric_post_link               = NULL,
1803         .fabric_pre_unlink              = NULL,
1804         .fabric_make_np                 = NULL,
1805         .fabric_drop_np                 = NULL,
1806         .fabric_make_nodeacl            = tcm_qla2xxx_make_nodeacl,
1807         .fabric_drop_nodeacl            = tcm_qla2xxx_drop_nodeacl,
1808 };
1809
1810 static int tcm_qla2xxx_register_configfs(void)
1811 {
1812         struct target_fabric_configfs *fabric, *npiv_fabric;
1813         int ret;
1814
1815         pr_debug("TCM QLOGIC QLA2XXX fabric module %s on %s/%s on "
1816             UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
1817             utsname()->machine);
1818         /*
1819          * Register the top level struct config_item_type with TCM core
1820          */
1821         fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
1822         if (IS_ERR(fabric)) {
1823                 pr_err("target_fabric_configfs_init() failed\n");
1824                 return PTR_ERR(fabric);
1825         }
1826         /*
1827          * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
1828          */
1829         fabric->tf_ops = tcm_qla2xxx_ops;
1830         /*
1831          * Setup default attribute lists for various fabric->tf_cit_tmpl
1832          */
1833         fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1834         fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
1835         fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs =
1836                                                 tcm_qla2xxx_tpg_attrib_attrs;
1837         fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
1838         fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
1839         fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1840         fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1841         fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1842         fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1843         /*
1844          * Register the fabric for use within TCM
1845          */
1846         ret = target_fabric_configfs_register(fabric);
1847         if (ret < 0) {
1848                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1849                 return ret;
1850         }
1851         /*
1852          * Setup our local pointer to *fabric
1853          */
1854         tcm_qla2xxx_fabric_configfs = fabric;
1855         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
1856
1857         /*
1858          * Register the top level struct config_item_type for NPIV with TCM core
1859          */
1860         npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
1861         if (IS_ERR(npiv_fabric)) {
1862                 pr_err("target_fabric_configfs_init() failed\n");
1863                 ret = PTR_ERR(npiv_fabric);
1864                 goto out_fabric;
1865         }
1866         /*
1867          * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
1868          */
1869         npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
1870         /*
1871          * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
1872          */
1873         npiv_fabric->tf_cit_tmpl.tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
1874         npiv_fabric->tf_cit_tmpl.tfc_tpg_base_cit.ct_attrs = NULL;
1875         npiv_fabric->tf_cit_tmpl.tfc_tpg_attrib_cit.ct_attrs = NULL;
1876         npiv_fabric->tf_cit_tmpl.tfc_tpg_param_cit.ct_attrs = NULL;
1877         npiv_fabric->tf_cit_tmpl.tfc_tpg_np_base_cit.ct_attrs = NULL;
1878         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_base_cit.ct_attrs = NULL;
1879         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
1880         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
1881         npiv_fabric->tf_cit_tmpl.tfc_tpg_nacl_param_cit.ct_attrs = NULL;
1882         /*
1883          * Register the npiv_fabric for use within TCM
1884          */
1885         ret = target_fabric_configfs_register(npiv_fabric);
1886         if (ret < 0) {
1887                 pr_err("target_fabric_configfs_register() failed for TCM_QLA2XXX\n");
1888                 goto out_fabric;
1889         }
1890         /*
1891          * Setup our local pointer to *npiv_fabric
1892          */
1893         tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
1894         pr_debug("TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
1895
1896         tcm_qla2xxx_free_wq = alloc_workqueue("tcm_qla2xxx_free",
1897                                                 WQ_MEM_RECLAIM, 0);
1898         if (!tcm_qla2xxx_free_wq) {
1899                 ret = -ENOMEM;
1900                 goto out_fabric_npiv;
1901         }
1902
1903         tcm_qla2xxx_cmd_wq = alloc_workqueue("tcm_qla2xxx_cmd", 0, 0);
1904         if (!tcm_qla2xxx_cmd_wq) {
1905                 ret = -ENOMEM;
1906                 goto out_free_wq;
1907         }
1908
1909         return 0;
1910
1911 out_free_wq:
1912         destroy_workqueue(tcm_qla2xxx_free_wq);
1913 out_fabric_npiv:
1914         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1915 out_fabric:
1916         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1917         return ret;
1918 }
1919
1920 static void tcm_qla2xxx_deregister_configfs(void)
1921 {
1922         destroy_workqueue(tcm_qla2xxx_cmd_wq);
1923         destroy_workqueue(tcm_qla2xxx_free_wq);
1924
1925         target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
1926         tcm_qla2xxx_fabric_configfs = NULL;
1927         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
1928
1929         target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
1930         tcm_qla2xxx_npiv_fabric_configfs = NULL;
1931         pr_debug("TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
1932 }
1933
1934 static int __init tcm_qla2xxx_init(void)
1935 {
1936         int ret;
1937
1938         ret = tcm_qla2xxx_register_configfs();
1939         if (ret < 0)
1940                 return ret;
1941
1942         return 0;
1943 }
1944
1945 static void __exit tcm_qla2xxx_exit(void)
1946 {
1947         tcm_qla2xxx_deregister_configfs();
1948 }
1949
1950 MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
1951 MODULE_LICENSE("GPL");
1952 module_init(tcm_qla2xxx_init);
1953 module_exit(tcm_qla2xxx_exit);