drivers/scsi/be2iscsi/be_iscsi.c

   1 /**
   2  * Copyright (C) 2005 - 2013 Emulex
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
  11  *
  12  * Contact Information:
  13  * linux-drivers@emulex.com
  14  *
  15  * Emulex
  16  * 3333 Susan Street
  17  * Costa Mesa, CA 92626
  18  */
  19
  20 #include <scsi/libiscsi.h>
  21 #include <scsi/scsi_transport_iscsi.h>
  22 #include <scsi/scsi_transport.h>
  23 #include <scsi/scsi_cmnd.h>
  24 #include <scsi/scsi_device.h>
  25 #include <scsi/scsi_host.h>
  26 #include <scsi/scsi_netlink.h>
  27 #include <net/netlink.h>
  28 #include <scsi/scsi.h>
  29
  30 #include "be_iscsi.h"
  31
  32 extern struct iscsi_transport beiscsi_iscsi_transport;
  33
  34 /**
  35  * beiscsi_session_create - creates a new iscsi session
  36  * @cmds_max: max commands supported
  37  * @qdepth: max queue depth supported
  38  * @initial_cmdsn: initial iscsi CMDSN
  39  */
  40 struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
  41                                                  u16 cmds_max,
  42                                                  u16 qdepth,
  43                                                  u32 initial_cmdsn)
  44 {
  45         struct Scsi_Host *shost;
  46         struct beiscsi_endpoint *beiscsi_ep;
  47         struct iscsi_cls_session *cls_session;
  48         struct beiscsi_hba *phba;
  49         struct iscsi_session *sess;
  50         struct beiscsi_session *beiscsi_sess;
  51         struct beiscsi_io_task *io_task;
  52
  53
  54         if (!ep) {
  55                 printk(KERN_ERR
  56                        "beiscsi_session_create: invalid ep\n");
  57                 return NULL;
  58         }
  59         beiscsi_ep = ep->dd_data;
  60         phba = beiscsi_ep->phba;
  61         shost = phba->shost;
  62
  63         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
  64                     "BS_%d : In beiscsi_session_create\n");
  65
  66         if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
  67                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
  68                             "BS_%d : Cannot handle %d cmds."
  69                             "Max cmds per session supported is %d. Using %d."
  70                             "\n", cmds_max,
  71                             beiscsi_ep->phba->params.wrbs_per_cxn,
  72                             beiscsi_ep->phba->params.wrbs_per_cxn);
  73
  74                 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
  75         }
  76
  77         cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
  78                                           shost, cmds_max,
  79                                           sizeof(*beiscsi_sess),
  80                                           sizeof(*io_task),
  81                                           initial_cmdsn, ISCSI_MAX_TARGET);
  82         if (!cls_session)
  83                 return NULL;
  84         sess = cls_session->dd_data;
  85         beiscsi_sess = sess->dd_data;
  86         beiscsi_sess->bhs_pool =  pci_pool_create("beiscsi_bhs_pool",
  87                                                    phba->pcidev,
  88                                                    sizeof(struct be_cmd_bhs),
  89                                                    64, 0);
  90         if (!beiscsi_sess->bhs_pool)
  91                 goto destroy_sess;
  92
  93         return cls_session;
  94 destroy_sess:
  95         iscsi_session_teardown(cls_session);
  96         return NULL;
  97 }
  98
  99 /**
 100  * beiscsi_session_destroy - destroys iscsi session
 101  * @cls_session:        pointer to iscsi cls session
 102  *
 103  * Destroys iSCSI session instance and releases
 104  * resources allocated for it.
 105  */
 106 void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
 107 {
 108         struct iscsi_session *sess = cls_session->dd_data;
 109         struct beiscsi_session *beiscsi_sess = sess->dd_data;
 110
 111         printk(KERN_INFO "In beiscsi_session_destroy\n");
 112         pci_pool_destroy(beiscsi_sess->bhs_pool);
 113         iscsi_session_teardown(cls_session);
 114 }
 115
 116 /**
 117  * beiscsi_conn_create - create an instance of iscsi connection
 118  * @cls_session: ptr to iscsi_cls_session
 119  * @cid: iscsi cid
 120  */
 121 struct iscsi_cls_conn *
 122 beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
 123 {
 124         struct beiscsi_hba *phba;
 125         struct Scsi_Host *shost;
 126         struct iscsi_cls_conn *cls_conn;
 127         struct beiscsi_conn *beiscsi_conn;
 128         struct iscsi_conn *conn;
 129         struct iscsi_session *sess;
 130         struct beiscsi_session *beiscsi_sess;
 131
 132         shost = iscsi_session_to_shost(cls_session);
 133         phba = iscsi_host_priv(shost);
 134
 135         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 136                     "BS_%d : In beiscsi_conn_create ,cid"
 137                     "from iscsi layer=%d\n", cid);
 138
 139         cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
 140         if (!cls_conn)
 141                 return NULL;
 142
 143         conn = cls_conn->dd_data;
 144         beiscsi_conn = conn->dd_data;
 145         beiscsi_conn->ep = NULL;
 146         beiscsi_conn->phba = phba;
 147         beiscsi_conn->conn = conn;
 148         sess = cls_session->dd_data;
 149         beiscsi_sess = sess->dd_data;
 150         beiscsi_conn->beiscsi_sess = beiscsi_sess;
 151         return cls_conn;
 152 }
 153
 154 /**
 155  * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
 156  * @beiscsi_conn: The pointer to  beiscsi_conn structure
 157  * @phba: The phba instance
 158  * @cid: The cid to free
 159  */
 160 static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
 161                                 struct beiscsi_conn *beiscsi_conn,
 162                                 unsigned int cid)
 163 {
 164         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
 165
 166         if (phba->conn_table[cri_index]) {
 167                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 168                             "BS_%d : Connection table already occupied. Detected clash\n");
 169
 170                 return -EINVAL;
 171         } else {
 172                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 173                             "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n",
 174                             cri_index, beiscsi_conn);
 175
 176                 phba->conn_table[cri_index] = beiscsi_conn;
 177         }
 178         return 0;
 179 }
 180
 181 /**
 182  * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
 183  * @cls_session: pointer to iscsi cls session
 184  * @cls_conn: pointer to iscsi cls conn
 185  * @transport_fd: EP handle(64 bit)
 186  *
 187  * This function binds the TCP Conn with iSCSI Connection and Session.
 188  */
 189 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 190                       struct iscsi_cls_conn *cls_conn,
 191                       u64 transport_fd, int is_leading)
 192 {
 193         struct iscsi_conn *conn = cls_conn->dd_data;
 194         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 195         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 196         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 197         struct beiscsi_endpoint *beiscsi_ep;
 198         struct iscsi_endpoint *ep;
 199
 200         ep = iscsi_lookup_endpoint(transport_fd);
 201         if (!ep)
 202                 return -EINVAL;
 203
 204         beiscsi_ep = ep->dd_data;
 205
 206         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
 207                 return -EINVAL;
 208
 209         if (beiscsi_ep->phba != phba) {
 210                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 211                             "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
 212                             beiscsi_ep->phba, phba);
 213
 214                 return -EEXIST;
 215         }
 216
 217         beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
 218         beiscsi_conn->ep = beiscsi_ep;
 219         beiscsi_ep->conn = beiscsi_conn;
 220
 221         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 222                     "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",
 223                     beiscsi_conn, conn, beiscsi_ep->ep_cid);
 224
 225         return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
 226 }
 227
 228 static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
 229 {
 230         if (phba->ipv4_iface)
 231                 return 0;
 232
 233         phba->ipv4_iface = iscsi_create_iface(phba->shost,
 234                                               &beiscsi_iscsi_transport,
 235                                               ISCSI_IFACE_TYPE_IPV4,
 236                                               0, 0);
 237         if (!phba->ipv4_iface) {
 238                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 239                             "BS_%d : Could not "
 240                             "create default IPv4 address.\n");
 241                 return -ENODEV;
 242         }
 243
 244         return 0;
 245 }
 246
 247 static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
 248 {
 249         if (phba->ipv6_iface)
 250                 return 0;
 251
 252         phba->ipv6_iface = iscsi_create_iface(phba->shost,
 253                                               &beiscsi_iscsi_transport,
 254                                               ISCSI_IFACE_TYPE_IPV6,
 255                                               0, 0);
 256         if (!phba->ipv6_iface) {
 257                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 258                             "BS_%d : Could not "
 259                             "create default IPv6 address.\n");
 260                 return -ENODEV;
 261         }
 262
 263         return 0;
 264 }
 265
 266 void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
 267 {
 268         struct be_cmd_get_if_info_resp if_info;
 269
 270         if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info))
 271                 beiscsi_create_ipv4_iface(phba);
 272
 273         if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info))
 274                 beiscsi_create_ipv6_iface(phba);
 275 }
 276
 277 void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
 278 {
 279         if (phba->ipv6_iface)
 280                 iscsi_destroy_iface(phba->ipv6_iface);
 281         if (phba->ipv4_iface)
 282                 iscsi_destroy_iface(phba->ipv4_iface);
 283 }
 284
 285 static int
 286 beiscsi_set_static_ip(struct Scsi_Host *shost,
 287                 struct iscsi_iface_param_info *iface_param,
 288                 void *data, uint32_t dt_len)
 289 {
 290         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 291         struct iscsi_iface_param_info *iface_ip = NULL;
 292         struct iscsi_iface_param_info *iface_subnet = NULL;
 293         struct nlattr *nla;
 294         int ret;
 295
 296
 297         switch (iface_param->param) {
 298         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 299                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 300                 if (nla)
 301                         iface_ip = nla_data(nla);
 302
 303                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 304                 if (nla)
 305                         iface_subnet = nla_data(nla);
 306                 break;
 307         case ISCSI_NET_PARAM_IPV4_ADDR:
 308                 iface_ip = iface_param;
 309                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 310                 if (nla)
 311                         iface_subnet = nla_data(nla);
 312                 break;
 313         case ISCSI_NET_PARAM_IPV4_SUBNET:
 314                 iface_subnet = iface_param;
 315                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 316                 if (nla)
 317                         iface_ip = nla_data(nla);
 318                 break;
 319         default:
 320                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 321                             "BS_%d : Unsupported param %d\n",
 322                             iface_param->param);
 323         }
 324
 325         if (!iface_ip || !iface_subnet) {
 326                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 327                             "BS_%d : IP and Subnet Mask required\n");
 328                 return -EINVAL;
 329         }
 330
 331         ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
 332                         ISCSI_BOOTPROTO_STATIC);
 333
 334         return ret;
 335 }
 336
 337 /**
 338  * beiscsi_set_vlan_tag()- Set the VLAN TAG
 339  * @shost: Scsi Host for the driver instance
 340  * @iface_param: Interface paramters
 341  *
 342  * Set the VLAN TAG for the adapter or disable
 343  * the VLAN config
 344  *
 345  * returns
 346  *      Success: 0
 347  *      Failure: Non-Zero Value
 348  **/
 349 static int
 350 beiscsi_set_vlan_tag(struct Scsi_Host *shost,
 351                       struct iscsi_iface_param_info *iface_param)
 352 {
 353         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 354         int ret = 0;
 355
 356         /* Get the Interface Handle */
 357         if (mgmt_get_all_if_id(phba)) {
 358                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 359                             "BS_%d : Getting Interface Handle Failed\n");
 360                 return -EIO;
 361         }
 362
 363         switch (iface_param->param) {
 364         case ISCSI_NET_PARAM_VLAN_ENABLED:
 365                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 366                         ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 367                 break;
 368         case ISCSI_NET_PARAM_VLAN_TAG:
 369                 ret = mgmt_set_vlan(phba,
 370                                     *((uint16_t *)iface_param->value));
 371                 break;
 372         default:
 373                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
 374                             "BS_%d : Unknown Param Type : %d\n",
 375                             iface_param->param);
 376                 return -ENOSYS;
 377         }
 378         return ret;
 379 }
 380
 381
 382 static int
 383 beiscsi_set_ipv4(struct Scsi_Host *shost,
 384                 struct iscsi_iface_param_info *iface_param,
 385                 void *data, uint32_t dt_len)
 386 {
 387         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 388         int ret = 0;
 389
 390         /* Check the param */
 391         switch (iface_param->param) {
 392         case ISCSI_NET_PARAM_IPV4_GW:
 393                 ret = mgmt_set_gateway(phba, iface_param);
 394                 break;
 395         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 396                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
 397                         ret = mgmt_set_ip(phba, iface_param,
 398                                         NULL, ISCSI_BOOTPROTO_DHCP);
 399                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
 400                         ret = beiscsi_set_static_ip(shost, iface_param,
 401                                                     data, dt_len);
 402                 else
 403                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 404                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 405                                     iface_param->value[0]);
 406                 break;
 407         case ISCSI_NET_PARAM_IFACE_ENABLE:
 408                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 409                         ret = beiscsi_create_ipv4_iface(phba);
 410                 else
 411                         iscsi_destroy_iface(phba->ipv4_iface);
 412                 break;
 413         case ISCSI_NET_PARAM_IPV4_SUBNET:
 414         case ISCSI_NET_PARAM_IPV4_ADDR:
 415                 ret = beiscsi_set_static_ip(shost, iface_param,
 416                                             data, dt_len);
 417                 break;
 418         case ISCSI_NET_PARAM_VLAN_ENABLED:
 419         case ISCSI_NET_PARAM_VLAN_TAG:
 420                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 421                 break;
 422         default:
 423                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 424                             "BS_%d : Param %d not supported\n",
 425                             iface_param->param);
 426         }
 427
 428         return ret;
 429 }
 430
 431 static int
 432 beiscsi_set_ipv6(struct Scsi_Host *shost,
 433                 struct iscsi_iface_param_info *iface_param,
 434                 void *data, uint32_t dt_len)
 435 {
 436         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 437         int ret = 0;
 438
 439         switch (iface_param->param) {
 440         case ISCSI_NET_PARAM_IFACE_ENABLE:
 441                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 442                         ret = beiscsi_create_ipv6_iface(phba);
 443                 else {
 444                         iscsi_destroy_iface(phba->ipv6_iface);
 445                         ret = 0;
 446                 }
 447                 break;
 448         case ISCSI_NET_PARAM_IPV6_ADDR:
 449                 ret = mgmt_set_ip(phba, iface_param, NULL,
 450                                   ISCSI_BOOTPROTO_STATIC);
 451                 break;
 452         default:
 453                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 454                             "BS_%d : Param %d not supported\n",
 455                             iface_param->param);
 456         }
 457
 458         return ret;
 459 }
 460
 461 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 462                 void *data, uint32_t dt_len)
 463 {
 464         struct iscsi_iface_param_info *iface_param = NULL;
 465         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 466         struct nlattr *attrib;
 467         uint32_t rm_len = dt_len;
 468         int ret = 0 ;
 469
 470         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 471                 iface_param = nla_data(attrib);
 472
 473                 if (iface_param->param_type != ISCSI_NET_PARAM)
 474                         continue;
 475
 476                 /*
 477                  * BE2ISCSI only supports 1 interface
 478                  */
 479                 if (iface_param->iface_num) {
 480                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 481                                     "BS_%d : Invalid iface_num %d."
 482                                     "Only iface_num 0 is supported.\n",
 483                                     iface_param->iface_num);
 484
 485                         return -EINVAL;
 486                 }
 487
 488                 switch (iface_param->iface_type) {
 489                 case ISCSI_IFACE_TYPE_IPV4:
 490                         ret = beiscsi_set_ipv4(shost, iface_param,
 491                                                data, dt_len);
 492                         break;
 493                 case ISCSI_IFACE_TYPE_IPV6:
 494                         ret = beiscsi_set_ipv6(shost, iface_param,
 495                                                data, dt_len);
 496                         break;
 497                 default:
 498                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 499                                     "BS_%d : Invalid iface type :%d passed\n",
 500                                     iface_param->iface_type);
 501                         break;
 502                 }
 503
 504                 if (ret)
 505                         return ret;
 506         }
 507
 508         return ret;
 509 }
 510
 511 static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
 512                 struct iscsi_iface *iface, int param,
 513                 char *buf)
 514 {
 515         struct be_cmd_get_if_info_resp if_info;
 516         int len, ip_type = BE2_IPV4;
 517
 518         memset(&if_info, 0, sizeof(if_info));
 519
 520         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 521                 ip_type = BE2_IPV6;
 522
 523         len = mgmt_get_if_info(phba, ip_type, &if_info);
 524         if (len)
 525                 return len;
 526
 527         switch (param) {
 528         case ISCSI_NET_PARAM_IPV4_ADDR:
 529                 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.addr);
 530                 break;
 531         case ISCSI_NET_PARAM_IPV6_ADDR:
 532                 len = sprintf(buf, "%pI6\n", &if_info.ip_addr.addr);
 533                 break;
 534         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 535                 if (!if_info.dhcp_state)
 536                         len = sprintf(buf, "static\n");
 537                 else
 538                         len = sprintf(buf, "dhcp\n");
 539                 break;
 540         case ISCSI_NET_PARAM_IPV4_SUBNET:
 541                 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.subnet_mask);
 542                 break;
 543         case ISCSI_NET_PARAM_VLAN_ENABLED:
 544                 len = sprintf(buf, "%s\n",
 545                              (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 546                              ? "Disabled\n" : "Enabled\n");
 547                 break;
 548         case ISCSI_NET_PARAM_VLAN_ID:
 549                 if (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 550                         return -EINVAL;
 551                 else
 552                         len = sprintf(buf, "%d\n",
 553                                      (if_info.vlan_priority &
 554                                      ISCSI_MAX_VLAN_ID));
 555                 break;
 556         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 557                 if (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 558                         return -EINVAL;
 559                 else
 560                         len = sprintf(buf, "%d\n",
 561                                      ((if_info.vlan_priority >> 13) &
 562                                      ISCSI_MAX_VLAN_PRIORITY));
 563                 break;
 564         default:
 565                 WARN_ON(1);
 566         }
 567
 568         return len;
 569 }
 570
 571 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 572                 enum iscsi_param_type param_type,
 573                 int param, char *buf)
 574 {
 575         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 576         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 577         struct be_cmd_get_def_gateway_resp gateway;
 578         int len = -ENOSYS;
 579
 580         switch (param) {
 581         case ISCSI_NET_PARAM_IPV4_ADDR:
 582         case ISCSI_NET_PARAM_IPV4_SUBNET:
 583         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 584         case ISCSI_NET_PARAM_IPV6_ADDR:
 585         case ISCSI_NET_PARAM_VLAN_ENABLED:
 586         case ISCSI_NET_PARAM_VLAN_ID:
 587         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 588                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 589                 break;
 590         case ISCSI_NET_PARAM_IFACE_ENABLE:
 591                 len = sprintf(buf, "enabled\n");
 592                 break;
 593         case ISCSI_NET_PARAM_IPV4_GW:
 594                 memset(&gateway, 0, sizeof(gateway));
 595                 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
 596                 if (!len)
 597                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 598                 break;
 599         default:
 600                 len = -ENOSYS;
 601         }
 602
 603         return len;
 604 }
 605
 606 /**
 607  * beiscsi_ep_get_param - get the iscsi parameter
 608  * @ep: pointer to iscsi ep
 609  * @param: parameter type identifier
 610  * @buf: buffer pointer
 611  *
 612  * returns iscsi parameter
 613  */
 614 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 615                            enum iscsi_param param, char *buf)
 616 {
 617         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 618         int len = 0;
 619
 620         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 621                     BEISCSI_LOG_CONFIG,
 622                     "BS_%d : In beiscsi_ep_get_param,"
 623                     " param= %d\n", param);
 624
 625         switch (param) {
 626         case ISCSI_PARAM_CONN_PORT:
 627                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 628                 break;
 629         case ISCSI_PARAM_CONN_ADDRESS:
 630                 if (beiscsi_ep->ip_type == BE2_IPV4)
 631                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 632                 else
 633                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 634                 break;
 635         default:
 636                 return -ENOSYS;
 637         }
 638         return len;
 639 }
 640
 641 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 642                       enum iscsi_param param, char *buf, int buflen)
 643 {
 644         struct iscsi_conn *conn = cls_conn->dd_data;
 645         struct iscsi_session *session = conn->session;
 646         struct beiscsi_hba *phba = NULL;
 647         int ret;
 648
 649         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 650         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 651                     "BS_%d : In beiscsi_conn_set_param,"
 652                     " param= %d\n", param);
 653
 654         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 655         if (ret)
 656                 return ret;
 657         /*
 658          * If userspace tried to set the value to higher than we can
 659          * support override here.
 660          */
 661         switch (param) {
 662         case ISCSI_PARAM_FIRST_BURST:
 663                 if (session->first_burst > 8192)
 664                         session->first_burst = 8192;
 665                 break;
 666         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 667                 if (conn->max_recv_dlength > 65536)
 668                         conn->max_recv_dlength = 65536;
 669                 break;
 670         case ISCSI_PARAM_MAX_BURST:
 671                 if (session->max_burst > 262144)
 672                         session->max_burst = 262144;
 673                 break;
 674         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 675                 if ((conn->max_xmit_dlength > 65536) ||
 676                     (conn->max_xmit_dlength == 0))
 677                         conn->max_xmit_dlength = 65536;
 678         default:
 679                 return 0;
 680         }
 681
 682         return 0;
 683 }
 684
 685 /**
 686  * beiscsi_get_initname - Read Initiator Name from flash
 687  * @buf: buffer bointer
 688  * @phba: The device priv structure instance
 689  *
 690  * returns number of bytes
 691  */
 692 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 693 {
 694         int rc;
 695         unsigned int tag;
 696         struct be_mcc_wrb *wrb;
 697         struct be_cmd_hba_name *resp;
 698
 699         tag = be_cmd_get_initname(phba);
 700         if (!tag) {
 701                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 702                             "BS_%d : Getting Initiator Name Failed\n");
 703
 704                 return -EBUSY;
 705         }
 706
 707         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 708         if (rc) {
 709                 beiscsi_log(phba, KERN_ERR,
 710                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 711                             "BS_%d : Initiator Name MBX Failed\n");
 712                 return rc;
 713         }
 714
 715         resp = embedded_payload(wrb);
 716         rc = sprintf(buf, "%s\n", resp->initiator_name);
 717         return rc;
 718 }
 719
 720 /**
 721  * beiscsi_get_port_state - Get the Port State
 722  * @shost : pointer to scsi_host structure
 723  *
 724  */
 725 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 726 {
 727         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 728         struct iscsi_cls_host *ihost = shost->shost_data;
 729
 730         ihost->port_state = (phba->state == BE_ADAPTER_UP) ?
 731                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 732 }
 733
 734 /**
 735  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 736  * @shost : pointer to scsi_host structure
 737  *
 738  * returns Success/Failure
 739  */
 740 static int beiscsi_get_port_speed(struct Scsi_Host *shost)
 741 {
 742         int rc;
 743         unsigned int tag;
 744         struct be_mcc_wrb *wrb;
 745         struct be_cmd_ntwk_link_status_resp *resp;
 746         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 747         struct iscsi_cls_host *ihost = shost->shost_data;
 748
 749         tag = be_cmd_get_port_speed(phba);
 750         if (!tag) {
 751                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 752                             "BS_%d : Getting Port Speed Failed\n");
 753
 754                  return -EBUSY;
 755         }
 756         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 757         if (rc) {
 758                 beiscsi_log(phba, KERN_ERR,
 759                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 760                             "BS_%d : Port Speed MBX Failed\n");
 761                 return rc;
 762         }
 763         resp = embedded_payload(wrb);
 764
 765         switch (resp->mac_speed) {
 766         case BE2ISCSI_LINK_SPEED_10MBPS:
 767                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 768                 break;
 769         case BE2ISCSI_LINK_SPEED_100MBPS:
 770                 ihost->port_speed = BE2ISCSI_LINK_SPEED_100MBPS;
 771                 break;
 772         case BE2ISCSI_LINK_SPEED_1GBPS:
 773                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 774                 break;
 775         case BE2ISCSI_LINK_SPEED_10GBPS:
 776                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 777                 break;
 778         default:
 779                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 780         }
 781         return 0;
 782 }
 783
 784 /**
 785  * beiscsi_get_host_param - get the iscsi parameter
 786  * @shost: pointer to scsi_host structure
 787  * @param: parameter type identifier
 788  * @buf: buffer pointer
 789  *
 790  * returns host parameter
 791  */
 792 int beiscsi_get_host_param(struct Scsi_Host *shost,
 793                            enum iscsi_host_param param, char *buf)
 794 {
 795         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 796         int status = 0;
 797
 798         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 799                     "BS_%d : In beiscsi_get_host_param,"
 800                     " param= %d\n", param);
 801
 802         switch (param) {
 803         case ISCSI_HOST_PARAM_HWADDRESS:
 804                 status = beiscsi_get_macaddr(buf, phba);
 805                 if (status < 0) {
 806                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 807                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 808                         return status;
 809                 }
 810                 break;
 811         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 812                 status = beiscsi_get_initname(buf, phba);
 813                 if (status < 0) {
 814                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 815                                     "BS_%d : Retreiving Initiator Name Failed\n");
 816                         return status;
 817                 }
 818                 break;
 819         case ISCSI_HOST_PARAM_PORT_STATE:
 820                 beiscsi_get_port_state(shost);
 821                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 822                 break;
 823         case ISCSI_HOST_PARAM_PORT_SPEED:
 824                 status = beiscsi_get_port_speed(shost);
 825                 if (status) {
 826                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 827                                     "BS_%d : Retreiving Port Speed Failed\n");
 828                         return status;
 829                 }
 830                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 831                 break;
 832         default:
 833                 return iscsi_host_get_param(shost, param, buf);
 834         }
 835         return status;
 836 }
 837
 838 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 839 {
 840         struct be_cmd_get_nic_conf_resp resp;
 841         int rc;
 842
 843         if (strlen(phba->mac_address))
 844                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 845
 846         memset(&resp, 0, sizeof(resp));
 847         rc = mgmt_get_nic_conf(phba, &resp);
 848         if (rc)
 849                 return rc;
 850
 851         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 852         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 853 }
 854
 855 /**
 856  * beiscsi_conn_get_stats - get the iscsi stats
 857  * @cls_conn: pointer to iscsi cls conn
 858  * @stats: pointer to iscsi_stats structure
 859  *
 860  * returns iscsi stats
 861  */
 862 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 863                             struct iscsi_stats *stats)
 864 {
 865         struct iscsi_conn *conn = cls_conn->dd_data;
 866         struct beiscsi_hba *phba = NULL;
 867
 868         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 869         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 870                     "BS_%d : In beiscsi_conn_get_stats\n");
 871
 872         stats->txdata_octets = conn->txdata_octets;
 873         stats->rxdata_octets = conn->rxdata_octets;
 874         stats->dataout_pdus = conn->dataout_pdus_cnt;
 875         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 876         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 877         stats->datain_pdus = conn->datain_pdus_cnt;
 878         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 879         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 880         stats->r2t_pdus = conn->r2t_pdus_cnt;
 881         stats->digest_err = 0;
 882         stats->timeout_err = 0;
 883         stats->custom_length = 0;
 884         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 885         stats->custom[0].value = conn->eh_abort_cnt;
 886 }
 887
 888 /**
 889  * beiscsi_set_params_for_offld - get the parameters for offload
 890  * @beiscsi_conn: pointer to beiscsi_conn
 891  * @params: pointer to offload_params structure
 892  */
 893 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 894                                           struct beiscsi_offload_params *params)
 895 {
 896         struct iscsi_conn *conn = beiscsi_conn->conn;
 897         struct iscsi_session *session = conn->session;
 898
 899         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 900                       params, session->max_burst);
 901         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 902                       max_send_data_segment_length, params,
 903                       conn->max_xmit_dlength);
 904         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 905                       params, session->first_burst);
 906         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 907                       session->erl);
 908         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 909                       conn->datadgst_en);
 910         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 911                       conn->hdrdgst_en);
 912         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 913                       session->initial_r2t_en);
 914         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 915                       session->imm_data_en);
 916         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 917                       data_seq_inorder, params,
 918                       session->dataseq_inorder_en);
 919         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 920                       pdu_seq_inorder, params,
 921                       session->pdu_inorder_en);
 922         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
 923                       session->max_r2t);
 924         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 925                       (conn->exp_statsn - 1));
 926 }
 927
 928 /**
 929  * beiscsi_conn_start - offload of session to chip
 930  * @cls_conn: pointer to beiscsi_conn
 931  */
 932 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 933 {
 934         struct iscsi_conn *conn = cls_conn->dd_data;
 935         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 936         struct beiscsi_endpoint *beiscsi_ep;
 937         struct beiscsi_offload_params params;
 938
 939         beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 940                     BEISCSI_LOG_CONFIG,
 941                     "BS_%d : In beiscsi_conn_start\n");
 942
 943         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 944         beiscsi_ep = beiscsi_conn->ep;
 945         if (!beiscsi_ep)
 946                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 947                             BEISCSI_LOG_CONFIG,
 948                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 949
 950         beiscsi_conn->login_in_progress = 0;
 951         beiscsi_set_params_for_offld(beiscsi_conn, &params);
 952         beiscsi_offload_connection(beiscsi_conn, &params);
 953         iscsi_conn_start(cls_conn);
 954         return 0;
 955 }
 956
 957 /**
 958  * beiscsi_get_cid - Allocate a cid
 959  * @phba: The phba instance
 960  */
 961 static int beiscsi_get_cid(struct beiscsi_hba *phba)
 962 {
 963         unsigned short cid = 0xFFFF;
 964
 965         if (!phba->avlbl_cids)
 966                 return cid;
 967
 968         cid = phba->cid_array[phba->cid_alloc++];
 969         if (phba->cid_alloc == phba->params.cxns_per_ctrl)
 970                 phba->cid_alloc = 0;
 971         phba->avlbl_cids--;
 972         return cid;
 973 }
 974
 975 /**
 976  * beiscsi_put_cid - Free the cid
 977  * @phba: The phba for which the cid is being freed
 978  * @cid: The cid to free
 979  */
 980 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
 981 {
 982         phba->avlbl_cids++;
 983         phba->cid_array[phba->cid_free++] = cid;
 984         if (phba->cid_free == phba->params.cxns_per_ctrl)
 985                 phba->cid_free = 0;
 986 }
 987
 988 /**
 989  * beiscsi_free_ep - free endpoint
 990  * @ep: pointer to iscsi endpoint structure
 991  */
 992 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
 993 {
 994         struct beiscsi_hba *phba = beiscsi_ep->phba;
 995         struct beiscsi_conn *beiscsi_conn;
 996
 997         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
 998         beiscsi_ep->phba = NULL;
 999         phba->ep_array[BE_GET_CRI_FROM_CID
1000                        (beiscsi_ep->ep_cid)] = NULL;
1001
1002         /**
1003          * Check if any connection resource allocated by driver
1004          * is to be freed.This case occurs when target redirection
1005          * or connection retry is done.
1006          **/
1007         if (!beiscsi_ep->conn)
1008                 return;
1009
1010         beiscsi_conn = beiscsi_ep->conn;
1011         if (beiscsi_conn->login_in_progress) {
1012                 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1013                                                beiscsi_conn->task);
1014                 beiscsi_conn->login_in_progress = 0;
1015         }
1016 }
1017
1018 /**
1019  * beiscsi_open_conn - Ask FW to open a TCP connection
1020  * @ep: endpoint to be used
1021  * @src_addr: The source IP address
1022  * @dst_addr: The Destination  IP address
1023  *
1024  * Asks the FW to open a TCP connection
1025  */
1026 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1027                              struct sockaddr *src_addr,
1028                              struct sockaddr *dst_addr, int non_blocking)
1029 {
1030         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1031         struct beiscsi_hba *phba = beiscsi_ep->phba;
1032         struct tcp_connect_and_offload_out *ptcpcnct_out;
1033         struct be_dma_mem nonemb_cmd;
1034         unsigned int tag;
1035         int ret = -ENOMEM;
1036
1037         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1038                     "BS_%d : In beiscsi_open_conn\n");
1039
1040         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1041         if (beiscsi_ep->ep_cid == 0xFFFF) {
1042                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1043                             "BS_%d : No free cid available\n");
1044                 return ret;
1045         }
1046
1047         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1048                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1049                     beiscsi_ep->ep_cid);
1050
1051         phba->ep_array[BE_GET_CRI_FROM_CID
1052                        (beiscsi_ep->ep_cid)] = ep;
1053
1054         beiscsi_ep->cid_vld = 0;
1055         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1056                                 sizeof(struct tcp_connect_and_offload_in),
1057                                 &nonemb_cmd.dma);
1058         if (nonemb_cmd.va == NULL) {
1059
1060                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1061                             "BS_%d : Failed to allocate memory for"
1062                             " mgmt_open_connection\n");
1063
1064                 beiscsi_free_ep(beiscsi_ep);
1065                 return -ENOMEM;
1066         }
1067         nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
1068         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1069         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1070         if (tag <= 0) {
1071                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1072                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1073                             beiscsi_ep->ep_cid);
1074
1075                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1076                                     nonemb_cmd.va, nonemb_cmd.dma);
1077                 beiscsi_free_ep(beiscsi_ep);
1078                 return -EAGAIN;
1079         }
1080
1081         ret = beiscsi_mccq_compl(phba, tag, NULL, nonemb_cmd.va);
1082         if (ret) {
1083                 beiscsi_log(phba, KERN_ERR,
1084                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1085                             "BS_%d : mgmt_open_connection Failed");
1086
1087                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1088                             nonemb_cmd.va, nonemb_cmd.dma);
1089                 beiscsi_free_ep(beiscsi_ep);
1090                 return -EBUSY;
1091         }
1092
1093         ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1094         beiscsi_ep = ep->dd_data;
1095         beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1096         beiscsi_ep->cid_vld = 1;
1097         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1098                     "BS_%d : mgmt_open_connection Success\n");
1099
1100         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1101                             nonemb_cmd.va, nonemb_cmd.dma);
1102         return 0;
1103 }
1104
1105 /**
1106  * beiscsi_ep_connect - Ask chip to create TCP Conn
1107  * @scsi_host: Pointer to scsi_host structure
1108  * @dst_addr: The IP address of Target
1109  * @non_blocking: blocking or non-blocking call
1110  *
1111  * This routines first asks chip to create a connection and then allocates an EP
1112  */
1113 struct iscsi_endpoint *
1114 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1115                    int non_blocking)
1116 {
1117         struct beiscsi_hba *phba;
1118         struct beiscsi_endpoint *beiscsi_ep;
1119         struct iscsi_endpoint *ep;
1120         int ret;
1121
1122         if (shost)
1123                 phba = iscsi_host_priv(shost);
1124         else {
1125                 ret = -ENXIO;
1126                 printk(KERN_ERR
1127                        "beiscsi_ep_connect shost is NULL\n");
1128                 return ERR_PTR(ret);
1129         }
1130
1131         if (beiscsi_error(phba)) {
1132                 ret = -EIO;
1133                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1134                             "BS_%d : The FW state Not Stable!!!\n");
1135                 return ERR_PTR(ret);
1136         }
1137
1138         if (phba->state != BE_ADAPTER_UP) {
1139                 ret = -EBUSY;
1140                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1141                             "BS_%d : The Adapter Port state is Down!!!\n");
1142                 return ERR_PTR(ret);
1143         }
1144
1145         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1146         if (!ep) {
1147                 ret = -ENOMEM;
1148                 return ERR_PTR(ret);
1149         }
1150
1151         beiscsi_ep = ep->dd_data;
1152         beiscsi_ep->phba = phba;
1153         beiscsi_ep->openiscsi_ep = ep;
1154         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1155         if (ret) {
1156                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1157                             "BS_%d : Failed in beiscsi_open_conn\n");
1158                 goto free_ep;
1159         }
1160
1161         return ep;
1162
1163 free_ep:
1164         iscsi_destroy_endpoint(ep);
1165         return ERR_PTR(ret);
1166 }
1167
1168 /**
1169  * beiscsi_ep_poll - Poll to see if connection is established
1170  * @ep: endpoint to be used
1171  * @timeout_ms: timeout specified in millisecs
1172  *
1173  * Poll to see if TCP connection established
1174  */
1175 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1176 {
1177         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1178
1179         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1180                     "BS_%d : In  beiscsi_ep_poll\n");
1181
1182         if (beiscsi_ep->cid_vld == 1)
1183                 return 1;
1184         else
1185                 return 0;
1186 }
1187
1188 /**
1189  * beiscsi_close_conn - Upload the  connection
1190  * @ep: The iscsi endpoint
1191  * @flag: The type of connection closure
1192  */
1193 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1194 {
1195         int ret = 0;
1196         unsigned int tag;
1197         struct beiscsi_hba *phba = beiscsi_ep->phba;
1198
1199         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1200         if (!tag) {
1201                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1202                             "BS_%d : upload failed for cid 0x%x\n",
1203                             beiscsi_ep->ep_cid);
1204
1205                 ret = -EAGAIN;
1206         }
1207
1208         ret = beiscsi_mccq_compl(phba, tag, NULL, NULL);
1209         return ret;
1210 }
1211
1212 /**
1213  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1214  * @phba: The phba instance
1215  * @cid: The cid to free
1216  */
1217 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1218                                       unsigned int cid)
1219 {
1220         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1221
1222         if (phba->conn_table[cri_index])
1223                 phba->conn_table[cri_index] = NULL;
1224         else {
1225                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1226                             "BS_%d : Connection table Not occupied.\n");
1227                 return -EINVAL;
1228         }
1229         return 0;
1230 }
1231
1232 /**
1233  * beiscsi_ep_disconnect - Tears down the TCP connection
1234  * @ep: endpoint to be used
1235  *
1236  * Tears down the TCP connection
1237  */
1238 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1239 {
1240         struct beiscsi_conn *beiscsi_conn;
1241         struct beiscsi_endpoint *beiscsi_ep;
1242         struct beiscsi_hba *phba;
1243         unsigned int tag;
1244         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1245         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1246
1247         beiscsi_ep = ep->dd_data;
1248         phba = beiscsi_ep->phba;
1249         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1250                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1251                     beiscsi_ep->ep_cid);
1252
1253         if (beiscsi_ep->conn) {
1254                 beiscsi_conn = beiscsi_ep->conn;
1255                 iscsi_suspend_queue(beiscsi_conn->conn);
1256                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1257                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1258         } else {
1259                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1260                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1261         }
1262
1263         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1264                                           beiscsi_ep->ep_cid,
1265                                           mgmt_invalidate_flag,
1266                                           savecfg_flag);
1267         if (!tag) {
1268                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1269                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1270                             beiscsi_ep->ep_cid);
1271         }
1272
1273         beiscsi_mccq_compl(phba, tag, NULL, NULL);
1274         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1275         beiscsi_free_ep(beiscsi_ep);
1276         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1277         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1278 }
1279
1280 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1281 {
1282         switch (param_type) {
1283         case ISCSI_NET_PARAM:
1284                 switch (param) {
1285                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1286                 case ISCSI_NET_PARAM_IPV4_ADDR:
1287                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1288                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1289                 case ISCSI_NET_PARAM_IPV4_GW:
1290                 case ISCSI_NET_PARAM_IPV6_ADDR:
1291                 case ISCSI_NET_PARAM_VLAN_ID:
1292                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1293                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1294                         return S_IRUGO;
1295                 default:
1296                         return 0;
1297                 }
1298         case ISCSI_HOST_PARAM:
1299                 switch (param) {
1300                 case ISCSI_HOST_PARAM_HWADDRESS:
1301                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1302                 case ISCSI_HOST_PARAM_PORT_STATE:
1303                 case ISCSI_HOST_PARAM_PORT_SPEED:
1304                         return S_IRUGO;
1305                 default:
1306                         return 0;
1307                 }
1308         case ISCSI_PARAM:
1309                 switch (param) {
1310                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1311                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1312                 case ISCSI_PARAM_HDRDGST_EN:
1313                 case ISCSI_PARAM_DATADGST_EN:
1314                 case ISCSI_PARAM_CONN_ADDRESS:
1315                 case ISCSI_PARAM_CONN_PORT:
1316                 case ISCSI_PARAM_EXP_STATSN:
1317                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1318                 case ISCSI_PARAM_PERSISTENT_PORT:
1319                 case ISCSI_PARAM_PING_TMO:
1320                 case ISCSI_PARAM_RECV_TMO:
1321                 case ISCSI_PARAM_INITIAL_R2T_EN:
1322                 case ISCSI_PARAM_MAX_R2T:
1323                 case ISCSI_PARAM_IMM_DATA_EN:
1324                 case ISCSI_PARAM_FIRST_BURST:
1325                 case ISCSI_PARAM_MAX_BURST:
1326                 case ISCSI_PARAM_PDU_INORDER_EN:
1327                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1328                 case ISCSI_PARAM_ERL:
1329                 case ISCSI_PARAM_TARGET_NAME:
1330                 case ISCSI_PARAM_TPGT:
1331                 case ISCSI_PARAM_USERNAME:
1332                 case ISCSI_PARAM_PASSWORD:
1333                 case ISCSI_PARAM_USERNAME_IN:
1334                 case ISCSI_PARAM_PASSWORD_IN:
1335                 case ISCSI_PARAM_FAST_ABORT:
1336                 case ISCSI_PARAM_ABORT_TMO:
1337                 case ISCSI_PARAM_LU_RESET_TMO:
1338                 case ISCSI_PARAM_IFACE_NAME:
1339                 case ISCSI_PARAM_INITIATOR_NAME:
1340                         return S_IRUGO;
1341                 default:
1342                         return 0;
1343                 }
1344         }
1345
1346         return 0;
1347 }