drivers/target/iscsi/iscsi_target_stat.c

   1 /*******************************************************************************
   2  * Modern ConfigFS group context specific iSCSI statistics based on original
   3  * iscsi_target_mib.c code
   4  *
   5  * Copyright (c) 2011-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  ******************************************************************************/
  19
  20 #include <linux/configfs.h>
  21 #include <linux/export.h>
  22 #include <scsi/iscsi_proto.h>
  23 #include <target/target_core_base.h>
  24
  25 #include <target/iscsi/iscsi_target_core.h>
  26 #include "iscsi_target_parameters.h"
  27 #include "iscsi_target_device.h"
  28 #include "iscsi_target_tpg.h"
  29 #include "iscsi_target_util.h"
  30 #include <target/iscsi/iscsi_target_stat.h>
  31
  32 #ifndef INITIAL_JIFFIES
  33 #define INITIAL_JIFFIES ((unsigned long)(unsigned int) (-300*HZ))
  34 #endif
  35
  36 /* Instance Attributes Table */
  37 #define ISCSI_INST_NUM_NODES            1
  38 #define ISCSI_INST_DESCR                "Storage Engine Target"
  39 #define ISCSI_INST_LAST_FAILURE_TYPE    0
  40 #define ISCSI_DISCONTINUITY_TIME        0
  41
  42 #define ISCSI_NODE_INDEX                1
  43
  44 #define ISPRINT(a)   ((a >= ' ') && (a <= '~'))
  45
  46 /****************************************************************************
  47  * iSCSI MIB Tables
  48  ****************************************************************************/
  49 /*
  50  * Instance Attributes Table
  51  */
  52 static struct iscsi_tiqn *iscsi_instance_tiqn(struct config_item *item)
  53 {
  54         struct iscsi_wwn_stat_grps *igrps = container_of(to_config_group(item),
  55                         struct iscsi_wwn_stat_grps, iscsi_instance_group);
  56         return container_of(igrps, struct iscsi_tiqn, tiqn_stat_grps);
  57 }
  58
  59 static ssize_t iscsi_stat_instance_inst_show(struct config_item *item,
  60                 char *page)
  61 {
  62         return snprintf(page, PAGE_SIZE, "%u\n",
  63                         iscsi_instance_tiqn(item)->tiqn_index);
  64 }
  65
  66 static ssize_t iscsi_stat_instance_min_ver_show(struct config_item *item,
  67                 char *page)
  68 {
  69         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION);
  70 }
  71
  72 static ssize_t iscsi_stat_instance_max_ver_show(struct config_item *item,
  73                 char *page)
  74 {
  75         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DRAFT20_VERSION);
  76 }
  77
  78 static ssize_t iscsi_stat_instance_portals_show(struct config_item *item,
  79                 char *page)
  80 {
  81         return snprintf(page, PAGE_SIZE, "%u\n",
  82                         iscsi_instance_tiqn(item)->tiqn_num_tpg_nps);
  83 }
  84
  85 static ssize_t iscsi_stat_instance_nodes_show(struct config_item *item,
  86                 char *page)
  87 {
  88         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_INST_NUM_NODES);
  89 }
  90
  91 static ssize_t iscsi_stat_instance_sessions_show(struct config_item *item,
  92                 char *page)
  93 {
  94         return snprintf(page, PAGE_SIZE, "%u\n",
  95                 iscsi_instance_tiqn(item)->tiqn_nsessions);
  96 }
  97
  98 static ssize_t iscsi_stat_instance_fail_sess_show(struct config_item *item,
  99                 char *page)
 100 {
 101         struct iscsi_tiqn *tiqn = iscsi_instance_tiqn(item);
 102         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 103         u32 sess_err_count;
 104
 105         spin_lock_bh(&sess_err->lock);
 106         sess_err_count = (sess_err->digest_errors +
 107                           sess_err->cxn_timeout_errors +
 108                           sess_err->pdu_format_errors);
 109         spin_unlock_bh(&sess_err->lock);
 110
 111         return snprintf(page, PAGE_SIZE, "%u\n", sess_err_count);
 112 }
 113
 114 static ssize_t iscsi_stat_instance_fail_type_show(struct config_item *item,
 115                 char *page)
 116 {
 117         struct iscsi_tiqn *tiqn = iscsi_instance_tiqn(item);
 118         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 119
 120         return snprintf(page, PAGE_SIZE, "%u\n",
 121                         sess_err->last_sess_failure_type);
 122 }
 123
 124 static ssize_t iscsi_stat_instance_fail_rem_name_show(struct config_item *item,
 125                 char *page)
 126 {
 127         struct iscsi_tiqn *tiqn = iscsi_instance_tiqn(item);
 128         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 129
 130         return snprintf(page, PAGE_SIZE, "%s\n",
 131                         sess_err->last_sess_fail_rem_name[0] ?
 132                         sess_err->last_sess_fail_rem_name : NONE);
 133 }
 134
 135 static ssize_t iscsi_stat_instance_disc_time_show(struct config_item *item,
 136                 char *page)
 137 {
 138         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_DISCONTINUITY_TIME);
 139 }
 140
 141 static ssize_t iscsi_stat_instance_description_show(struct config_item *item,
 142                 char *page)
 143 {
 144         return snprintf(page, PAGE_SIZE, "%s\n", ISCSI_INST_DESCR);
 145 }
 146
 147 static ssize_t iscsi_stat_instance_vendor_show(struct config_item *item,
 148                 char *page)
 149 {
 150         return snprintf(page, PAGE_SIZE, "Datera, Inc. iSCSI-Target\n");
 151 }
 152
 153 static ssize_t iscsi_stat_instance_version_show(struct config_item *item,
 154                 char *page)
 155 {
 156         return snprintf(page, PAGE_SIZE, "%s\n", ISCSIT_VERSION);
 157 }
 158
 159 CONFIGFS_ATTR_RO(iscsi_stat_instance_, inst);
 160 CONFIGFS_ATTR_RO(iscsi_stat_instance_, min_ver);
 161 CONFIGFS_ATTR_RO(iscsi_stat_instance_, max_ver);
 162 CONFIGFS_ATTR_RO(iscsi_stat_instance_, portals);
 163 CONFIGFS_ATTR_RO(iscsi_stat_instance_, nodes);
 164 CONFIGFS_ATTR_RO(iscsi_stat_instance_, sessions);
 165 CONFIGFS_ATTR_RO(iscsi_stat_instance_, fail_sess);
 166 CONFIGFS_ATTR_RO(iscsi_stat_instance_, fail_type);
 167 CONFIGFS_ATTR_RO(iscsi_stat_instance_, fail_rem_name);
 168 CONFIGFS_ATTR_RO(iscsi_stat_instance_, disc_time);
 169 CONFIGFS_ATTR_RO(iscsi_stat_instance_, description);
 170 CONFIGFS_ATTR_RO(iscsi_stat_instance_, vendor);
 171 CONFIGFS_ATTR_RO(iscsi_stat_instance_, version);
 172
 173 static struct configfs_attribute *iscsi_stat_instance_attrs[] = {
 174         &iscsi_stat_instance_attr_inst,
 175         &iscsi_stat_instance_attr_min_ver,
 176         &iscsi_stat_instance_attr_max_ver,
 177         &iscsi_stat_instance_attr_portals,
 178         &iscsi_stat_instance_attr_nodes,
 179         &iscsi_stat_instance_attr_sessions,
 180         &iscsi_stat_instance_attr_fail_sess,
 181         &iscsi_stat_instance_attr_fail_type,
 182         &iscsi_stat_instance_attr_fail_rem_name,
 183         &iscsi_stat_instance_attr_disc_time,
 184         &iscsi_stat_instance_attr_description,
 185         &iscsi_stat_instance_attr_vendor,
 186         &iscsi_stat_instance_attr_version,
 187         NULL,
 188 };
 189
 190 struct config_item_type iscsi_stat_instance_cit = {
 191         .ct_attrs               = iscsi_stat_instance_attrs,
 192         .ct_owner               = THIS_MODULE,
 193 };
 194
 195 /*
 196  * Instance Session Failure Stats Table
 197  */
 198 static struct iscsi_tiqn *iscsi_sess_err_tiqn(struct config_item *item)
 199 {
 200         struct iscsi_wwn_stat_grps *igrps = container_of(to_config_group(item),
 201                         struct iscsi_wwn_stat_grps, iscsi_sess_err_group);
 202         return container_of(igrps, struct iscsi_tiqn, tiqn_stat_grps);
 203 }
 204
 205 static ssize_t iscsi_stat_sess_err_inst_show(struct config_item *item,
 206                 char *page)
 207 {
 208         return snprintf(page, PAGE_SIZE, "%u\n",
 209                 iscsi_sess_err_tiqn(item)->tiqn_index);
 210 }
 211
 212 static ssize_t iscsi_stat_sess_err_digest_errors_show(struct config_item *item,
 213                 char *page)
 214 {
 215         struct iscsi_tiqn *tiqn = iscsi_sess_err_tiqn(item);
 216         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 217
 218         return snprintf(page, PAGE_SIZE, "%u\n", sess_err->digest_errors);
 219 }
 220
 221 static ssize_t iscsi_stat_sess_err_cxn_errors_show(struct config_item *item,
 222                 char *page)
 223 {
 224         struct iscsi_tiqn *tiqn = iscsi_sess_err_tiqn(item);
 225         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 226
 227         return snprintf(page, PAGE_SIZE, "%u\n", sess_err->cxn_timeout_errors);
 228 }
 229
 230 static ssize_t iscsi_stat_sess_err_format_errors_show(struct config_item *item,
 231                 char *page)
 232 {
 233         struct iscsi_tiqn *tiqn = iscsi_sess_err_tiqn(item);
 234         struct iscsi_sess_err_stats *sess_err = &tiqn->sess_err_stats;
 235
 236         return snprintf(page, PAGE_SIZE, "%u\n", sess_err->pdu_format_errors);
 237 }
 238
 239 CONFIGFS_ATTR_RO(iscsi_stat_sess_err_, inst);
 240 CONFIGFS_ATTR_RO(iscsi_stat_sess_err_, digest_errors);
 241 CONFIGFS_ATTR_RO(iscsi_stat_sess_err_, cxn_errors);
 242 CONFIGFS_ATTR_RO(iscsi_stat_sess_err_, format_errors);
 243
 244 static struct configfs_attribute *iscsi_stat_sess_err_attrs[] = {
 245         &iscsi_stat_sess_err_attr_inst,
 246         &iscsi_stat_sess_err_attr_digest_errors,
 247         &iscsi_stat_sess_err_attr_cxn_errors,
 248         &iscsi_stat_sess_err_attr_format_errors,
 249         NULL,
 250 };
 251
 252 struct config_item_type iscsi_stat_sess_err_cit = {
 253         .ct_attrs               = iscsi_stat_sess_err_attrs,
 254         .ct_owner               = THIS_MODULE,
 255 };
 256
 257 /*
 258  * Target Attributes Table
 259  */
 260 static struct iscsi_tiqn *iscsi_tgt_attr_tiqn(struct config_item *item)
 261 {
 262         struct iscsi_wwn_stat_grps *igrps = container_of(to_config_group(item),
 263                         struct iscsi_wwn_stat_grps, iscsi_tgt_attr_group);
 264         return container_of(igrps, struct iscsi_tiqn, tiqn_stat_grps);
 265 }
 266
 267 static ssize_t iscsi_stat_tgt_attr_inst_show(struct config_item *item,
 268                 char *page)
 269 {
 270         return snprintf(page, PAGE_SIZE, "%u\n",
 271                         iscsi_tgt_attr_tiqn(item)->tiqn_index);
 272 }
 273
 274 static ssize_t iscsi_stat_tgt_attr_indx_show(struct config_item *item,
 275                 char *page)
 276 {
 277         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
 278 }
 279
 280 static ssize_t iscsi_stat_tgt_attr_login_fails_show(struct config_item *item,
 281                 char *page)
 282 {
 283         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 284         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 285         u32 fail_count;
 286
 287         spin_lock(&lstat->lock);
 288         fail_count = (lstat->redirects + lstat->authorize_fails +
 289                         lstat->authenticate_fails + lstat->negotiate_fails +
 290                         lstat->other_fails);
 291         spin_unlock(&lstat->lock);
 292
 293         return snprintf(page, PAGE_SIZE, "%u\n", fail_count);
 294 }
 295
 296 static ssize_t iscsi_stat_tgt_attr_last_fail_time_show(struct config_item *item,
 297                 char *page)
 298 {
 299         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 300         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 301         u32 last_fail_time;
 302
 303         spin_lock(&lstat->lock);
 304         last_fail_time = lstat->last_fail_time ?
 305                         (u32)(((u32)lstat->last_fail_time -
 306                                 INITIAL_JIFFIES) * 100 / HZ) : 0;
 307         spin_unlock(&lstat->lock);
 308
 309         return snprintf(page, PAGE_SIZE, "%u\n", last_fail_time);
 310 }
 311
 312 static ssize_t iscsi_stat_tgt_attr_last_fail_type_show(struct config_item *item,
 313                 char *page)
 314 {
 315         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 316         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 317         u32 last_fail_type;
 318
 319         spin_lock(&lstat->lock);
 320         last_fail_type = lstat->last_fail_type;
 321         spin_unlock(&lstat->lock);
 322
 323         return snprintf(page, PAGE_SIZE, "%u\n", last_fail_type);
 324 }
 325
 326 static ssize_t iscsi_stat_tgt_attr_fail_intr_name_show(struct config_item *item,
 327                 char *page)
 328 {
 329         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 330         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 331         unsigned char buf[224];
 332
 333         spin_lock(&lstat->lock);
 334         snprintf(buf, 224, "%s", lstat->last_intr_fail_name[0] ?
 335                                 lstat->last_intr_fail_name : NONE);
 336         spin_unlock(&lstat->lock);
 337
 338         return snprintf(page, PAGE_SIZE, "%s\n", buf);
 339 }
 340
 341 static ssize_t iscsi_stat_tgt_attr_fail_intr_addr_type_show(struct config_item *item,
 342                 char *page)
 343 {
 344         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 345         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 346         int ret;
 347
 348         spin_lock(&lstat->lock);
 349         if (lstat->last_intr_fail_ip_family == AF_INET6)
 350                 ret = snprintf(page, PAGE_SIZE, "ipv6\n");
 351         else
 352                 ret = snprintf(page, PAGE_SIZE, "ipv4\n");
 353         spin_unlock(&lstat->lock);
 354
 355         return ret;
 356 }
 357
 358 static ssize_t iscsi_stat_tgt_attr_fail_intr_addr_show(struct config_item *item,
 359                 char *page)
 360 {
 361         struct iscsi_tiqn *tiqn = iscsi_tgt_attr_tiqn(item);
 362         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 363         int ret;
 364
 365         spin_lock(&lstat->lock);
 366         ret = snprintf(page, PAGE_SIZE, "%pISc\n", &lstat->last_intr_fail_sockaddr);
 367         spin_unlock(&lstat->lock);
 368
 369         return ret;
 370 }
 371
 372 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, inst);
 373 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, indx);
 374 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, login_fails);
 375 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, last_fail_time);
 376 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, last_fail_type);
 377 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, fail_intr_name);
 378 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, fail_intr_addr_type);
 379 CONFIGFS_ATTR_RO(iscsi_stat_tgt_attr_, fail_intr_addr);
 380
 381 static struct configfs_attribute *iscsi_stat_tgt_attr_attrs[] = {
 382         &iscsi_stat_tgt_attr_attr_inst,
 383         &iscsi_stat_tgt_attr_attr_indx,
 384         &iscsi_stat_tgt_attr_attr_login_fails,
 385         &iscsi_stat_tgt_attr_attr_last_fail_time,
 386         &iscsi_stat_tgt_attr_attr_last_fail_type,
 387         &iscsi_stat_tgt_attr_attr_fail_intr_name,
 388         &iscsi_stat_tgt_attr_attr_fail_intr_addr_type,
 389         &iscsi_stat_tgt_attr_attr_fail_intr_addr,
 390         NULL,
 391 };
 392
 393 struct config_item_type iscsi_stat_tgt_attr_cit = {
 394         .ct_attrs               = iscsi_stat_tgt_attr_attrs,
 395         .ct_owner               = THIS_MODULE,
 396 };
 397
 398 /*
 399  * Target Login Stats Table
 400  */
 401 static struct iscsi_tiqn *iscsi_login_stat_tiqn(struct config_item *item)
 402 {
 403         struct iscsi_wwn_stat_grps *igrps = container_of(to_config_group(item),
 404                         struct iscsi_wwn_stat_grps, iscsi_login_stats_group);
 405         return container_of(igrps, struct iscsi_tiqn, tiqn_stat_grps);
 406 }
 407
 408 static ssize_t iscsi_stat_login_inst_show(struct config_item *item, char *page)
 409 {
 410         return snprintf(page, PAGE_SIZE, "%u\n",
 411                 iscsi_login_stat_tiqn(item)->tiqn_index);
 412 }
 413
 414 static ssize_t iscsi_stat_login_indx_show(struct config_item *item,
 415                 char *page)
 416 {
 417         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
 418 }
 419
 420 static ssize_t iscsi_stat_login_accepts_show(struct config_item *item,
 421                 char *page)
 422 {
 423         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 424         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 425         ssize_t ret;
 426
 427         spin_lock(&lstat->lock);
 428         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->accepts);
 429         spin_unlock(&lstat->lock);
 430
 431         return ret;
 432 }
 433
 434 static ssize_t iscsi_stat_login_other_fails_show(struct config_item *item,
 435                 char *page)
 436 {
 437         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 438         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 439         ssize_t ret;
 440
 441         spin_lock(&lstat->lock);
 442         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->other_fails);
 443         spin_unlock(&lstat->lock);
 444
 445         return ret;
 446 }
 447
 448 static ssize_t iscsi_stat_login_redirects_show(struct config_item *item,
 449                 char *page)
 450 {
 451         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 452         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 453         ssize_t ret;
 454
 455         spin_lock(&lstat->lock);
 456         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->redirects);
 457         spin_unlock(&lstat->lock);
 458
 459         return ret;
 460 }
 461
 462 static ssize_t iscsi_stat_login_authorize_fails_show(struct config_item *item,
 463                 char *page)
 464 {
 465         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 466         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 467         ssize_t ret;
 468
 469         spin_lock(&lstat->lock);
 470         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->authorize_fails);
 471         spin_unlock(&lstat->lock);
 472
 473         return ret;
 474 }
 475
 476 static ssize_t iscsi_stat_login_authenticate_fails_show(
 477                 struct config_item *item, char *page)
 478 {
 479         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 480         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 481         ssize_t ret;
 482
 483         spin_lock(&lstat->lock);
 484         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->authenticate_fails);
 485         spin_unlock(&lstat->lock);
 486
 487         return ret;
 488 }
 489
 490 static ssize_t iscsi_stat_login_negotiate_fails_show(struct config_item *item,
 491                 char *page)
 492 {
 493         struct iscsi_tiqn *tiqn = iscsi_login_stat_tiqn(item);
 494         struct iscsi_login_stats *lstat = &tiqn->login_stats;
 495         ssize_t ret;
 496
 497         spin_lock(&lstat->lock);
 498         ret = snprintf(page, PAGE_SIZE, "%u\n", lstat->negotiate_fails);
 499         spin_unlock(&lstat->lock);
 500
 501         return ret;
 502 }
 503
 504 CONFIGFS_ATTR_RO(iscsi_stat_login_, inst);
 505 CONFIGFS_ATTR_RO(iscsi_stat_login_, indx);
 506 CONFIGFS_ATTR_RO(iscsi_stat_login_, accepts);
 507 CONFIGFS_ATTR_RO(iscsi_stat_login_, other_fails);
 508 CONFIGFS_ATTR_RO(iscsi_stat_login_, redirects);
 509 CONFIGFS_ATTR_RO(iscsi_stat_login_, authorize_fails);
 510 CONFIGFS_ATTR_RO(iscsi_stat_login_, authenticate_fails);
 511 CONFIGFS_ATTR_RO(iscsi_stat_login_, negotiate_fails);
 512
 513 static struct configfs_attribute *iscsi_stat_login_stats_attrs[] = {
 514         &iscsi_stat_login_attr_inst,
 515         &iscsi_stat_login_attr_indx,
 516         &iscsi_stat_login_attr_accepts,
 517         &iscsi_stat_login_attr_other_fails,
 518         &iscsi_stat_login_attr_redirects,
 519         &iscsi_stat_login_attr_authorize_fails,
 520         &iscsi_stat_login_attr_authenticate_fails,
 521         &iscsi_stat_login_attr_negotiate_fails,
 522         NULL,
 523 };
 524
 525 struct config_item_type iscsi_stat_login_cit = {
 526         .ct_attrs               = iscsi_stat_login_stats_attrs,
 527         .ct_owner               = THIS_MODULE,
 528 };
 529
 530 /*
 531  * Target Logout Stats Table
 532  */
 533 static struct iscsi_tiqn *iscsi_logout_stat_tiqn(struct config_item *item)
 534 {
 535         struct iscsi_wwn_stat_grps *igrps = container_of(to_config_group(item),
 536                         struct iscsi_wwn_stat_grps, iscsi_logout_stats_group);
 537         return container_of(igrps, struct iscsi_tiqn, tiqn_stat_grps);
 538 }
 539
 540 static ssize_t iscsi_stat_logout_inst_show(struct config_item *item, char *page)
 541 {
 542         return snprintf(page, PAGE_SIZE, "%u\n",
 543                 iscsi_logout_stat_tiqn(item)->tiqn_index);
 544 }
 545
 546 static ssize_t iscsi_stat_logout_indx_show(struct config_item *item, char *page)
 547 {
 548         return snprintf(page, PAGE_SIZE, "%u\n", ISCSI_NODE_INDEX);
 549 }
 550
 551 static ssize_t iscsi_stat_logout_normal_logouts_show(struct config_item *item,
 552                 char *page)
 553 {
 554         struct iscsi_tiqn *tiqn = iscsi_logout_stat_tiqn(item);
 555         struct iscsi_logout_stats *lstats = &tiqn->logout_stats;
 556
 557         return snprintf(page, PAGE_SIZE, "%u\n", lstats->normal_logouts);
 558 }
 559
 560 static ssize_t iscsi_stat_logout_abnormal_logouts_show(struct config_item *item,
 561                 char *page)
 562 {
 563         struct iscsi_tiqn *tiqn = iscsi_logout_stat_tiqn(item);
 564         struct iscsi_logout_stats *lstats = &tiqn->logout_stats;
 565
 566         return snprintf(page, PAGE_SIZE, "%u\n", lstats->abnormal_logouts);
 567 }
 568
 569 CONFIGFS_ATTR_RO(iscsi_stat_logout_, inst);
 570 CONFIGFS_ATTR_RO(iscsi_stat_logout_, indx);
 571 CONFIGFS_ATTR_RO(iscsi_stat_logout_, normal_logouts);
 572 CONFIGFS_ATTR_RO(iscsi_stat_logout_, abnormal_logouts);
 573
 574 static struct configfs_attribute *iscsi_stat_logout_stats_attrs[] = {
 575         &iscsi_stat_logout_attr_inst,
 576         &iscsi_stat_logout_attr_indx,
 577         &iscsi_stat_logout_attr_normal_logouts,
 578         &iscsi_stat_logout_attr_abnormal_logouts,
 579         NULL,
 580 };
 581
 582 struct config_item_type iscsi_stat_logout_cit = {
 583         .ct_attrs               = iscsi_stat_logout_stats_attrs,
 584         .ct_owner               = THIS_MODULE,
 585 };
 586
 587 /*
 588  * Session Stats Table
 589  */
 590 static struct iscsi_node_acl *iscsi_stat_nacl(struct config_item *item)
 591 {
 592         struct iscsi_node_stat_grps *igrps = container_of(to_config_group(item),
 593                         struct iscsi_node_stat_grps, iscsi_sess_stats_group);
 594         return container_of(igrps, struct iscsi_node_acl, node_stat_grps);
 595 }
 596
 597 static ssize_t iscsi_stat_sess_inst_show(struct config_item *item, char *page)
 598 {
 599         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 600         struct se_wwn *wwn = acl->se_node_acl.se_tpg->se_tpg_wwn;
 601         struct iscsi_tiqn *tiqn = container_of(wwn,
 602                         struct iscsi_tiqn, tiqn_wwn);
 603
 604         return snprintf(page, PAGE_SIZE, "%u\n", tiqn->tiqn_index);
 605 }
 606
 607 static ssize_t iscsi_stat_sess_node_show(struct config_item *item, char *page)
 608 {
 609         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 610         struct se_node_acl *se_nacl = &acl->se_node_acl;
 611         struct iscsi_session *sess;
 612         struct se_session *se_sess;
 613         ssize_t ret = 0;
 614
 615         spin_lock_bh(&se_nacl->nacl_sess_lock);
 616         se_sess = se_nacl->nacl_sess;
 617         if (se_sess) {
 618                 sess = se_sess->fabric_sess_ptr;
 619                 if (sess)
 620                         ret = snprintf(page, PAGE_SIZE, "%u\n",
 621                                 sess->sess_ops->SessionType ? 0 : ISCSI_NODE_INDEX);
 622         }
 623         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 624
 625         return ret;
 626 }
 627
 628 static ssize_t iscsi_stat_sess_indx_show(struct config_item *item, char *page)
 629 {
 630         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 631         struct se_node_acl *se_nacl = &acl->se_node_acl;
 632         struct iscsi_session *sess;
 633         struct se_session *se_sess;
 634         ssize_t ret = 0;
 635
 636         spin_lock_bh(&se_nacl->nacl_sess_lock);
 637         se_sess = se_nacl->nacl_sess;
 638         if (se_sess) {
 639                 sess = se_sess->fabric_sess_ptr;
 640                 if (sess)
 641                         ret = snprintf(page, PAGE_SIZE, "%u\n",
 642                                         sess->session_index);
 643         }
 644         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 645
 646         return ret;
 647 }
 648
 649 static ssize_t iscsi_stat_sess_cmd_pdus_show(struct config_item *item,
 650                 char *page)
 651 {
 652         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 653         struct se_node_acl *se_nacl = &acl->se_node_acl;
 654         struct iscsi_session *sess;
 655         struct se_session *se_sess;
 656         ssize_t ret = 0;
 657
 658         spin_lock_bh(&se_nacl->nacl_sess_lock);
 659         se_sess = se_nacl->nacl_sess;
 660         if (se_sess) {
 661                 sess = se_sess->fabric_sess_ptr;
 662                 if (sess)
 663                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 664                                        atomic_long_read(&sess->cmd_pdus));
 665         }
 666         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 667
 668         return ret;
 669 }
 670
 671 static ssize_t iscsi_stat_sess_rsp_pdus_show(struct config_item *item,
 672                 char *page)
 673 {
 674         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 675         struct se_node_acl *se_nacl = &acl->se_node_acl;
 676         struct iscsi_session *sess;
 677         struct se_session *se_sess;
 678         ssize_t ret = 0;
 679
 680         spin_lock_bh(&se_nacl->nacl_sess_lock);
 681         se_sess = se_nacl->nacl_sess;
 682         if (se_sess) {
 683                 sess = se_sess->fabric_sess_ptr;
 684                 if (sess)
 685                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 686                                        atomic_long_read(&sess->rsp_pdus));
 687         }
 688         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 689
 690         return ret;
 691 }
 692
 693 static ssize_t iscsi_stat_sess_txdata_octs_show(struct config_item *item,
 694                 char *page)
 695 {
 696         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 697         struct se_node_acl *se_nacl = &acl->se_node_acl;
 698         struct iscsi_session *sess;
 699         struct se_session *se_sess;
 700         ssize_t ret = 0;
 701
 702         spin_lock_bh(&se_nacl->nacl_sess_lock);
 703         se_sess = se_nacl->nacl_sess;
 704         if (se_sess) {
 705                 sess = se_sess->fabric_sess_ptr;
 706                 if (sess)
 707                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 708                                        atomic_long_read(&sess->tx_data_octets));
 709         }
 710         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 711
 712         return ret;
 713 }
 714
 715 static ssize_t iscsi_stat_sess_rxdata_octs_show(struct config_item *item,
 716                 char *page)
 717 {
 718         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 719         struct se_node_acl *se_nacl = &acl->se_node_acl;
 720         struct iscsi_session *sess;
 721         struct se_session *se_sess;
 722         ssize_t ret = 0;
 723
 724         spin_lock_bh(&se_nacl->nacl_sess_lock);
 725         se_sess = se_nacl->nacl_sess;
 726         if (se_sess) {
 727                 sess = se_sess->fabric_sess_ptr;
 728                 if (sess)
 729                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 730                                        atomic_long_read(&sess->rx_data_octets));
 731         }
 732         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 733
 734         return ret;
 735 }
 736
 737 static ssize_t iscsi_stat_sess_conn_digest_errors_show(struct config_item *item,
 738                 char *page)
 739 {
 740         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 741         struct se_node_acl *se_nacl = &acl->se_node_acl;
 742         struct iscsi_session *sess;
 743         struct se_session *se_sess;
 744         ssize_t ret = 0;
 745
 746         spin_lock_bh(&se_nacl->nacl_sess_lock);
 747         se_sess = se_nacl->nacl_sess;
 748         if (se_sess) {
 749                 sess = se_sess->fabric_sess_ptr;
 750                 if (sess)
 751                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 752                                        atomic_long_read(&sess->conn_digest_errors));
 753         }
 754         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 755
 756         return ret;
 757 }
 758
 759 static ssize_t iscsi_stat_sess_conn_timeout_errors_show(
 760                 struct config_item *item, char *page)
 761 {
 762         struct iscsi_node_acl *acl = iscsi_stat_nacl(item);
 763         struct se_node_acl *se_nacl = &acl->se_node_acl;
 764         struct iscsi_session *sess;
 765         struct se_session *se_sess;
 766         ssize_t ret = 0;
 767
 768         spin_lock_bh(&se_nacl->nacl_sess_lock);
 769         se_sess = se_nacl->nacl_sess;
 770         if (se_sess) {
 771                 sess = se_sess->fabric_sess_ptr;
 772                 if (sess)
 773                         ret = snprintf(page, PAGE_SIZE, "%lu\n",
 774                                        atomic_long_read(&sess->conn_timeout_errors));
 775         }
 776         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 777
 778         return ret;
 779 }
 780
 781 CONFIGFS_ATTR_RO(iscsi_stat_sess_, inst);
 782 CONFIGFS_ATTR_RO(iscsi_stat_sess_, node);
 783 CONFIGFS_ATTR_RO(iscsi_stat_sess_, indx);
 784 CONFIGFS_ATTR_RO(iscsi_stat_sess_, cmd_pdus);
 785 CONFIGFS_ATTR_RO(iscsi_stat_sess_, rsp_pdus);
 786 CONFIGFS_ATTR_RO(iscsi_stat_sess_, txdata_octs);
 787 CONFIGFS_ATTR_RO(iscsi_stat_sess_, rxdata_octs);
 788 CONFIGFS_ATTR_RO(iscsi_stat_sess_, conn_digest_errors);
 789 CONFIGFS_ATTR_RO(iscsi_stat_sess_, conn_timeout_errors);
 790
 791 static struct configfs_attribute *iscsi_stat_sess_stats_attrs[] = {
 792         &iscsi_stat_sess_attr_inst,
 793         &iscsi_stat_sess_attr_node,
 794         &iscsi_stat_sess_attr_indx,
 795         &iscsi_stat_sess_attr_cmd_pdus,
 796         &iscsi_stat_sess_attr_rsp_pdus,
 797         &iscsi_stat_sess_attr_txdata_octs,
 798         &iscsi_stat_sess_attr_rxdata_octs,
 799         &iscsi_stat_sess_attr_conn_digest_errors,
 800         &iscsi_stat_sess_attr_conn_timeout_errors,
 801         NULL,
 802 };
 803
 804 struct config_item_type iscsi_stat_sess_cit = {
 805         .ct_attrs               = iscsi_stat_sess_stats_attrs,
 806         .ct_owner               = THIS_MODULE,
 807 };