Pileus Git - ~andy/linux/blob - drivers/scsi/be2iscsi/be_iscsi.c

   1 /**
   2  * Copyright (C) 2005 - 2011 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         if (phba->conn_table[cid]) {
 165                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 166                             "BS_%d : Connection table already occupied. Detected clash\n");
 167
 168                 return -EINVAL;
 169         } else {
 170                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 171                             "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n",
 172                             cid, beiscsi_conn);
 173
 174                 phba->conn_table[cid] = beiscsi_conn;
 175         }
 176         return 0;
 177 }
 178
 179 /**
 180  * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
 181  * @cls_session: pointer to iscsi cls session
 182  * @cls_conn: pointer to iscsi cls conn
 183  * @transport_fd: EP handle(64 bit)
 184  *
 185  * This function binds the TCP Conn with iSCSI Connection and Session.
 186  */
 187 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 188                       struct iscsi_cls_conn *cls_conn,
 189                       u64 transport_fd, int is_leading)
 190 {
 191         struct iscsi_conn *conn = cls_conn->dd_data;
 192         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 193         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 194         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 195         struct beiscsi_endpoint *beiscsi_ep;
 196         struct iscsi_endpoint *ep;
 197
 198         ep = iscsi_lookup_endpoint(transport_fd);
 199         if (!ep)
 200                 return -EINVAL;
 201
 202         beiscsi_ep = ep->dd_data;
 203
 204         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
 205                 return -EINVAL;
 206
 207         if (beiscsi_ep->phba != phba) {
 208                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 209                             "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
 210                             beiscsi_ep->phba, phba);
 211
 212                 return -EEXIST;
 213         }
 214
 215         beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
 216         beiscsi_conn->ep = beiscsi_ep;
 217         beiscsi_ep->conn = beiscsi_conn;
 218
 219         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 220                     "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",
 221                     beiscsi_conn, conn, beiscsi_ep->ep_cid);
 222
 223         return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
 224 }
 225
 226 static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
 227 {
 228         if (phba->ipv4_iface)
 229                 return 0;
 230
 231         phba->ipv4_iface = iscsi_create_iface(phba->shost,
 232                                               &beiscsi_iscsi_transport,
 233                                               ISCSI_IFACE_TYPE_IPV4,
 234                                               0, 0);
 235         if (!phba->ipv4_iface) {
 236                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 237                             "BS_%d : Could not "
 238                             "create default IPv4 address.\n");
 239                 return -ENODEV;
 240         }
 241
 242         return 0;
 243 }
 244
 245 static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
 246 {
 247         if (phba->ipv6_iface)
 248                 return 0;
 249
 250         phba->ipv6_iface = iscsi_create_iface(phba->shost,
 251                                               &beiscsi_iscsi_transport,
 252                                               ISCSI_IFACE_TYPE_IPV6,
 253                                               0, 0);
 254         if (!phba->ipv6_iface) {
 255                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 256                             "BS_%d : Could not "
 257                             "create default IPv6 address.\n");
 258                 return -ENODEV;
 259         }
 260
 261         return 0;
 262 }
 263
 264 void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
 265 {
 266         struct be_cmd_get_if_info_resp if_info;
 267
 268         if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info))
 269                 beiscsi_create_ipv4_iface(phba);
 270
 271         if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info))
 272                 beiscsi_create_ipv6_iface(phba);
 273 }
 274
 275 void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
 276 {
 277         if (phba->ipv6_iface)
 278                 iscsi_destroy_iface(phba->ipv6_iface);
 279         if (phba->ipv4_iface)
 280                 iscsi_destroy_iface(phba->ipv4_iface);
 281 }
 282
 283 static int
 284 beiscsi_set_static_ip(struct Scsi_Host *shost,
 285                 struct iscsi_iface_param_info *iface_param,
 286                 void *data, uint32_t dt_len)
 287 {
 288         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 289         struct iscsi_iface_param_info *iface_ip = NULL;
 290         struct iscsi_iface_param_info *iface_subnet = NULL;
 291         struct nlattr *nla;
 292         int ret;
 293
 294
 295         switch (iface_param->param) {
 296         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 297                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 298                 if (nla)
 299                         iface_ip = nla_data(nla);
 300
 301                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 302                 if (nla)
 303                         iface_subnet = nla_data(nla);
 304                 break;
 305         case ISCSI_NET_PARAM_IPV4_ADDR:
 306                 iface_ip = iface_param;
 307                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 308                 if (nla)
 309                         iface_subnet = nla_data(nla);
 310                 break;
 311         case ISCSI_NET_PARAM_IPV4_SUBNET:
 312                 iface_subnet = iface_param;
 313                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 314                 if (nla)
 315                         iface_ip = nla_data(nla);
 316                 break;
 317         default:
 318                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 319                             "BS_%d : Unsupported param %d\n",
 320                             iface_param->param);
 321         }
 322
 323         if (!iface_ip || !iface_subnet) {
 324                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 325                             "BS_%d : IP and Subnet Mask required\n");
 326                 return -EINVAL;
 327         }
 328
 329         ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
 330                         ISCSI_BOOTPROTO_STATIC);
 331
 332         return ret;
 333 }
 334
 335 /**
 336  * beiscsi_set_vlan_tag()- Set the VLAN TAG
 337  * @shost: Scsi Host for the driver instance
 338  * @iface_param: Interface paramters
 339  *
 340  * Set the VLAN TAG for the adapter or disable
 341  * the VLAN config
 342  *
 343  * returns
 344  *      Success: 0
 345  *      Failure: Non-Zero Value
 346  **/
 347 static int
 348 beiscsi_set_vlan_tag(struct Scsi_Host *shost,
 349                       struct iscsi_iface_param_info *iface_param)
 350 {
 351         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 352         int ret = 0;
 353
 354         /* Get the Interface Handle */
 355         if (mgmt_get_all_if_id(phba)) {
 356                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 357                             "BS_%d : Getting Interface Handle Failed\n");
 358                 return -EIO;
 359         }
 360
 361         switch (iface_param->param) {
 362         case ISCSI_NET_PARAM_VLAN_ENABLED:
 363                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 364                         ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 365                 break;
 366         case ISCSI_NET_PARAM_VLAN_TAG:
 367                 ret = mgmt_set_vlan(phba,
 368                                     *((uint16_t *)iface_param->value));
 369                 break;
 370         default:
 371                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
 372                             "BS_%d : Unkown Param Type : %d\n",
 373                             iface_param->param);
 374                 return -ENOSYS;
 375         }
 376         return ret;
 377 }
 378
 379
 380 static int
 381 beiscsi_set_ipv4(struct Scsi_Host *shost,
 382                 struct iscsi_iface_param_info *iface_param,
 383                 void *data, uint32_t dt_len)
 384 {
 385         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 386         int ret = 0;
 387
 388         /* Check the param */
 389         switch (iface_param->param) {
 390         case ISCSI_NET_PARAM_IPV4_GW:
 391                 ret = mgmt_set_gateway(phba, iface_param);
 392                 break;
 393         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 394                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
 395                         ret = mgmt_set_ip(phba, iface_param,
 396                                         NULL, ISCSI_BOOTPROTO_DHCP);
 397                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
 398                         ret = beiscsi_set_static_ip(shost, iface_param,
 399                                                     data, dt_len);
 400                 else
 401                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 402                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 403                                     iface_param->value[0]);
 404                 break;
 405         case ISCSI_NET_PARAM_IFACE_ENABLE:
 406                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 407                         ret = beiscsi_create_ipv4_iface(phba);
 408                 else
 409                         iscsi_destroy_iface(phba->ipv4_iface);
 410                 break;
 411         case ISCSI_NET_PARAM_IPV4_SUBNET:
 412         case ISCSI_NET_PARAM_IPV4_ADDR:
 413                 ret = beiscsi_set_static_ip(shost, iface_param,
 414                                             data, dt_len);
 415                 break;
 416         case ISCSI_NET_PARAM_VLAN_ENABLED:
 417         case ISCSI_NET_PARAM_VLAN_TAG:
 418                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 419                 break;
 420         default:
 421                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 422                             "BS_%d : Param %d not supported\n",
 423                             iface_param->param);
 424         }
 425
 426         return ret;
 427 }
 428
 429 static int
 430 beiscsi_set_ipv6(struct Scsi_Host *shost,
 431                 struct iscsi_iface_param_info *iface_param,
 432                 void *data, uint32_t dt_len)
 433 {
 434         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 435         int ret = 0;
 436
 437         switch (iface_param->param) {
 438         case ISCSI_NET_PARAM_IFACE_ENABLE:
 439                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 440                         ret = beiscsi_create_ipv6_iface(phba);
 441                 else {
 442                         iscsi_destroy_iface(phba->ipv6_iface);
 443                         ret = 0;
 444                 }
 445                 break;
 446         case ISCSI_NET_PARAM_IPV6_ADDR:
 447                 ret = mgmt_set_ip(phba, iface_param, NULL,
 448                                   ISCSI_BOOTPROTO_STATIC);
 449                 break;
 450         default:
 451                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 452                             "BS_%d : Param %d not supported\n",
 453                             iface_param->param);
 454         }
 455
 456         return ret;
 457 }
 458
 459 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 460                 void *data, uint32_t dt_len)
 461 {
 462         struct iscsi_iface_param_info *iface_param = NULL;
 463         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 464         struct nlattr *attrib;
 465         uint32_t rm_len = dt_len;
 466         int ret = 0 ;
 467
 468         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 469                 iface_param = nla_data(attrib);
 470
 471                 if (iface_param->param_type != ISCSI_NET_PARAM)
 472                         continue;
 473
 474                 /*
 475                  * BE2ISCSI only supports 1 interface
 476                  */
 477                 if (iface_param->iface_num) {
 478                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 479                                     "BS_%d : Invalid iface_num %d."
 480                                     "Only iface_num 0 is supported.\n",
 481                                     iface_param->iface_num);
 482
 483                         return -EINVAL;
 484                 }
 485
 486                 switch (iface_param->iface_type) {
 487                 case ISCSI_IFACE_TYPE_IPV4:
 488                         ret = beiscsi_set_ipv4(shost, iface_param,
 489                                                data, dt_len);
 490                         break;
 491                 case ISCSI_IFACE_TYPE_IPV6:
 492                         ret = beiscsi_set_ipv6(shost, iface_param,
 493                                                data, dt_len);
 494                         break;
 495                 default:
 496                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 497                                     "BS_%d : Invalid iface type :%d passed\n",
 498                                     iface_param->iface_type);
 499                         break;
 500                 }
 501
 502                 if (ret)
 503                         return ret;
 504         }
 505
 506         return ret;
 507 }
 508
 509 static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
 510                 struct iscsi_iface *iface, int param,
 511                 char *buf)
 512 {
 513         struct be_cmd_get_if_info_resp if_info;
 514         int len, ip_type = BE2_IPV4;
 515
 516         memset(&if_info, 0, sizeof(if_info));
 517
 518         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 519                 ip_type = BE2_IPV6;
 520
 521         len = mgmt_get_if_info(phba, ip_type, &if_info);
 522         if (len)
 523                 return len;
 524
 525         switch (param) {
 526         case ISCSI_NET_PARAM_IPV4_ADDR:
 527                 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.addr);
 528                 break;
 529         case ISCSI_NET_PARAM_IPV6_ADDR:
 530                 len = sprintf(buf, "%pI6\n", &if_info.ip_addr.addr);
 531                 break;
 532         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 533                 if (!if_info.dhcp_state)
 534                         len = sprintf(buf, "static");
 535                 else
 536                         len = sprintf(buf, "dhcp");
 537                 break;
 538         case ISCSI_NET_PARAM_IPV4_SUBNET:
 539                 len = sprintf(buf, "%pI4\n", &if_info.ip_addr.subnet_mask);
 540                 break;
 541         case ISCSI_NET_PARAM_VLAN_ENABLED:
 542                 len = sprintf(buf, "%s\n",
 543                              (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 544                              ? "Disabled" : "Enabled");
 545                 break;
 546         case ISCSI_NET_PARAM_VLAN_ID:
 547                 if (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 548                         return -EINVAL;
 549                 else
 550                         len = sprintf(buf, "%d\n",
 551                                      (if_info.vlan_priority &
 552                                      ISCSI_MAX_VLAN_ID));
 553                 break;
 554         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 555                 if (if_info.vlan_priority == BEISCSI_VLAN_DISABLE)
 556                         return -EINVAL;
 557                 else
 558                         len = sprintf(buf, "%d\n",
 559                                      ((if_info.vlan_priority >> 13) &
 560                                      ISCSI_MAX_VLAN_PRIORITY));
 561                 break;
 562         default:
 563                 WARN_ON(1);
 564         }
 565
 566         return len;
 567 }
 568
 569 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 570                 enum iscsi_param_type param_type,
 571                 int param, char *buf)
 572 {
 573         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 574         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 575         struct be_cmd_get_def_gateway_resp gateway;
 576         int len = -ENOSYS;
 577
 578         switch (param) {
 579         case ISCSI_NET_PARAM_IPV4_ADDR:
 580         case ISCSI_NET_PARAM_IPV4_SUBNET:
 581         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 582         case ISCSI_NET_PARAM_IPV6_ADDR:
 583         case ISCSI_NET_PARAM_VLAN_ENABLED:
 584         case ISCSI_NET_PARAM_VLAN_ID:
 585         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 586                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 587                 break;
 588         case ISCSI_NET_PARAM_IFACE_ENABLE:
 589                 len = sprintf(buf, "enabled");
 590                 break;
 591         case ISCSI_NET_PARAM_IPV4_GW:
 592                 memset(&gateway, 0, sizeof(gateway));
 593                 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
 594                 if (!len)
 595                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 596                 break;
 597         default:
 598                 len = -ENOSYS;
 599         }
 600
 601         return len;
 602 }
 603
 604 /**
 605  * beiscsi_ep_get_param - get the iscsi parameter
 606  * @ep: pointer to iscsi ep
 607  * @param: parameter type identifier
 608  * @buf: buffer pointer
 609  *
 610  * returns iscsi parameter
 611  */
 612 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 613                            enum iscsi_param param, char *buf)
 614 {
 615         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 616         int len = 0;
 617
 618         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 619                     BEISCSI_LOG_CONFIG,
 620                     "BS_%d : In beiscsi_ep_get_param,"
 621                     " param= %d\n", param);
 622
 623         switch (param) {
 624         case ISCSI_PARAM_CONN_PORT:
 625                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 626                 break;
 627         case ISCSI_PARAM_CONN_ADDRESS:
 628                 if (beiscsi_ep->ip_type == BE2_IPV4)
 629                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 630                 else
 631                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 632                 break;
 633         default:
 634                 return -ENOSYS;
 635         }
 636         return len;
 637 }
 638
 639 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 640                       enum iscsi_param param, char *buf, int buflen)
 641 {
 642         struct iscsi_conn *conn = cls_conn->dd_data;
 643         struct iscsi_session *session = conn->session;
 644         struct beiscsi_hba *phba = NULL;
 645         int ret;
 646
 647         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 648         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 649                     "BS_%d : In beiscsi_conn_set_param,"
 650                     " param= %d\n", param);
 651
 652         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 653         if (ret)
 654                 return ret;
 655         /*
 656          * If userspace tried to set the value to higher than we can
 657          * support override here.
 658          */
 659         switch (param) {
 660         case ISCSI_PARAM_FIRST_BURST:
 661                 if (session->first_burst > 8192)
 662                         session->first_burst = 8192;
 663                 break;
 664         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 665                 if (conn->max_recv_dlength > 65536)
 666                         conn->max_recv_dlength = 65536;
 667                 break;
 668         case ISCSI_PARAM_MAX_BURST:
 669                 if (session->max_burst > 262144)
 670                         session->max_burst = 262144;
 671                 break;
 672         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 673                 if ((conn->max_xmit_dlength > 65536) ||
 674                     (conn->max_xmit_dlength == 0))
 675                         conn->max_xmit_dlength = 65536;
 676         default:
 677                 return 0;
 678         }
 679
 680         return 0;
 681 }
 682
 683 /**
 684  * beiscsi_get_initname - Read Initiator Name from flash
 685  * @buf: buffer bointer
 686  * @phba: The device priv structure instance
 687  *
 688  * returns number of bytes
 689  */
 690 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 691 {
 692         int rc;
 693         unsigned int tag, wrb_num;
 694         unsigned short status, extd_status;
 695         struct be_mcc_wrb *wrb;
 696         struct be_cmd_hba_name *resp;
 697         struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
 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         } else
 706                 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
 707                                 phba->ctrl.mcc_numtag[tag]);
 708
 709         wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
 710         extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
 711         status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
 712
 713         if (status || extd_status) {
 714                 beiscsi_log(phba, KERN_ERR,
 715                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 716                             "BS_%d : MailBox Command Failed with "
 717                             "status = %d extd_status = %d\n",
 718                             status, extd_status);
 719
 720                 free_mcc_tag(&phba->ctrl, tag);
 721                 return -EAGAIN;
 722         }
 723         wrb = queue_get_wrb(mccq, wrb_num);
 724         free_mcc_tag(&phba->ctrl, tag);
 725         resp = embedded_payload(wrb);
 726         rc = sprintf(buf, "%s\n", resp->initiator_name);
 727         return rc;
 728 }
 729
 730 /**
 731  * beiscsi_get_port_state - Get the Port State
 732  * @shost : pointer to scsi_host structure
 733  *
 734  * returns number of bytes
 735  */
 736 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 737 {
 738         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 739         struct iscsi_cls_host *ihost = shost->shost_data;
 740
 741         ihost->port_state = (phba->state == BE_ADAPTER_UP) ?
 742                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 743 }
 744
 745 /**
 746  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 747  * @shost : pointer to scsi_host structure
 748  *
 749  * returns Success/Failure
 750  */
 751 static int beiscsi_get_port_speed(struct Scsi_Host *shost)
 752 {
 753         unsigned int tag, wrb_num;
 754         unsigned short status, extd_status;
 755         struct be_mcc_wrb *wrb;
 756         struct be_cmd_ntwk_link_status_resp *resp;
 757         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 758         struct iscsi_cls_host *ihost = shost->shost_data;
 759         struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
 760
 761         tag = be_cmd_get_port_speed(phba);
 762         if (!tag) {
 763                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 764                             "BS_%d : Getting Port Speed Failed\n");
 765
 766                  return -EBUSY;
 767          } else
 768                 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
 769                                 phba->ctrl.mcc_numtag[tag]);
 770
 771         wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
 772         extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
 773         status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
 774
 775         if (status || extd_status) {
 776                 beiscsi_log(phba, KERN_ERR,
 777                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 778                             "BS_%d : MailBox Command Failed with "
 779                             "status = %d extd_status = %d\n",
 780                             status, extd_status);
 781
 782                 free_mcc_tag(&phba->ctrl, tag);
 783                 return -EAGAIN;
 784         }
 785         wrb = queue_get_wrb(mccq, wrb_num);
 786         free_mcc_tag(&phba->ctrl, tag);
 787         resp = embedded_payload(wrb);
 788
 789         switch (resp->mac_speed) {
 790         case BE2ISCSI_LINK_SPEED_10MBPS:
 791                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 792                 break;
 793         case BE2ISCSI_LINK_SPEED_100MBPS:
 794                 ihost->port_speed = BE2ISCSI_LINK_SPEED_100MBPS;
 795                 break;
 796         case BE2ISCSI_LINK_SPEED_1GBPS:
 797                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 798                 break;
 799         case BE2ISCSI_LINK_SPEED_10GBPS:
 800                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 801                 break;
 802         default:
 803                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 804         }
 805         return 0;
 806 }
 807
 808 /**
 809  * beiscsi_get_host_param - get the iscsi parameter
 810  * @shost: pointer to scsi_host structure
 811  * @param: parameter type identifier
 812  * @buf: buffer pointer
 813  *
 814  * returns host parameter
 815  */
 816 int beiscsi_get_host_param(struct Scsi_Host *shost,
 817                            enum iscsi_host_param param, char *buf)
 818 {
 819         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 820         int status = 0;
 821
 822         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 823                     "BS_%d : In beiscsi_get_host_param,"
 824                     " param= %d\n", param);
 825
 826         switch (param) {
 827         case ISCSI_HOST_PARAM_HWADDRESS:
 828                 status = beiscsi_get_macaddr(buf, phba);
 829                 if (status < 0) {
 830                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 831                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 832                         return status;
 833                 }
 834                 break;
 835         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 836                 status = beiscsi_get_initname(buf, phba);
 837                 if (status < 0) {
 838                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 839                                     "BS_%d : Retreiving Initiator Name Failed\n");
 840                         return status;
 841                 }
 842                 break;
 843         case ISCSI_HOST_PARAM_PORT_STATE:
 844                 beiscsi_get_port_state(shost);
 845                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 846                 break;
 847         case ISCSI_HOST_PARAM_PORT_SPEED:
 848                 status = beiscsi_get_port_speed(shost);
 849                 if (status) {
 850                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 851                                     "BS_%d : Retreiving Port Speed Failed\n");
 852                         return status;
 853                 }
 854                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 855                 break;
 856         default:
 857                 return iscsi_host_get_param(shost, param, buf);
 858         }
 859         return status;
 860 }
 861
 862 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 863 {
 864         struct be_cmd_get_nic_conf_resp resp;
 865         int rc;
 866
 867         if (strlen(phba->mac_address))
 868                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 869
 870         memset(&resp, 0, sizeof(resp));
 871         rc = mgmt_get_nic_conf(phba, &resp);
 872         if (rc)
 873                 return rc;
 874
 875         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 876         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 877 }
 878
 879 /**
 880  * beiscsi_conn_get_stats - get the iscsi stats
 881  * @cls_conn: pointer to iscsi cls conn
 882  * @stats: pointer to iscsi_stats structure
 883  *
 884  * returns iscsi stats
 885  */
 886 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 887                             struct iscsi_stats *stats)
 888 {
 889         struct iscsi_conn *conn = cls_conn->dd_data;
 890         struct beiscsi_hba *phba = NULL;
 891
 892         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 893         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 894                     "BS_%d : In beiscsi_conn_get_stats\n");
 895
 896         stats->txdata_octets = conn->txdata_octets;
 897         stats->rxdata_octets = conn->rxdata_octets;
 898         stats->dataout_pdus = conn->dataout_pdus_cnt;
 899         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 900         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 901         stats->datain_pdus = conn->datain_pdus_cnt;
 902         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 903         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 904         stats->r2t_pdus = conn->r2t_pdus_cnt;
 905         stats->digest_err = 0;
 906         stats->timeout_err = 0;
 907         stats->custom_length = 0;
 908         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 909         stats->custom[0].value = conn->eh_abort_cnt;
 910 }
 911
 912 /**
 913  * beiscsi_set_params_for_offld - get the parameters for offload
 914  * @beiscsi_conn: pointer to beiscsi_conn
 915  * @params: pointer to offload_params structure
 916  */
 917 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 918                                           struct beiscsi_offload_params *params)
 919 {
 920         struct iscsi_conn *conn = beiscsi_conn->conn;
 921         struct iscsi_session *session = conn->session;
 922
 923         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 924                       params, session->max_burst);
 925         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 926                       max_send_data_segment_length, params,
 927                       conn->max_xmit_dlength);
 928         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 929                       params, session->first_burst);
 930         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 931                       session->erl);
 932         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 933                       conn->datadgst_en);
 934         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 935                       conn->hdrdgst_en);
 936         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 937                       session->initial_r2t_en);
 938         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 939                       session->imm_data_en);
 940         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 941                       (conn->exp_statsn - 1));
 942 }
 943
 944 /**
 945  * beiscsi_conn_start - offload of session to chip
 946  * @cls_conn: pointer to beiscsi_conn
 947  */
 948 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 949 {
 950         struct iscsi_conn *conn = cls_conn->dd_data;
 951         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 952         struct beiscsi_endpoint *beiscsi_ep;
 953         struct beiscsi_offload_params params;
 954
 955         beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 956                     BEISCSI_LOG_CONFIG,
 957                     "BS_%d : In beiscsi_conn_start\n");
 958
 959         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 960         beiscsi_ep = beiscsi_conn->ep;
 961         if (!beiscsi_ep)
 962                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 963                             BEISCSI_LOG_CONFIG,
 964                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 965
 966         beiscsi_conn->login_in_progress = 0;
 967         beiscsi_set_params_for_offld(beiscsi_conn, &params);
 968         beiscsi_offload_connection(beiscsi_conn, &params);
 969         iscsi_conn_start(cls_conn);
 970         return 0;
 971 }
 972
 973 /**
 974  * beiscsi_get_cid - Allocate a cid
 975  * @phba: The phba instance
 976  */
 977 static int beiscsi_get_cid(struct beiscsi_hba *phba)
 978 {
 979         unsigned short cid = 0xFFFF;
 980
 981         if (!phba->avlbl_cids)
 982                 return cid;
 983
 984         cid = phba->cid_array[phba->cid_alloc++];
 985         if (phba->cid_alloc == phba->params.cxns_per_ctrl)
 986                 phba->cid_alloc = 0;
 987         phba->avlbl_cids--;
 988         return cid;
 989 }
 990
 991 /**
 992  * beiscsi_put_cid - Free the cid
 993  * @phba: The phba for which the cid is being freed
 994  * @cid: The cid to free
 995  */
 996 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
 997 {
 998         phba->avlbl_cids++;
 999         phba->cid_array[phba->cid_free++] = cid;
1000         if (phba->cid_free == phba->params.cxns_per_ctrl)
1001                 phba->cid_free = 0;
1002 }
1003
1004 /**
1005  * beiscsi_free_ep - free endpoint
1006  * @ep: pointer to iscsi endpoint structure
1007  */
1008 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1009 {
1010         struct beiscsi_hba *phba = beiscsi_ep->phba;
1011
1012         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1013         beiscsi_ep->phba = NULL;
1014 }
1015
1016 /**
1017  * beiscsi_open_conn - Ask FW to open a TCP connection
1018  * @ep: endpoint to be used
1019  * @src_addr: The source IP address
1020  * @dst_addr: The Destination  IP address
1021  *
1022  * Asks the FW to open a TCP connection
1023  */
1024 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1025                              struct sockaddr *src_addr,
1026                              struct sockaddr *dst_addr, int non_blocking)
1027 {
1028         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1029         struct beiscsi_hba *phba = beiscsi_ep->phba;
1030         struct be_queue_info *mccq = &phba->ctrl.mcc_obj.q;
1031         struct be_mcc_wrb *wrb;
1032         struct tcp_connect_and_offload_out *ptcpcnct_out;
1033         unsigned short status, extd_status;
1034         struct be_dma_mem nonemb_cmd;
1035         unsigned int tag, wrb_num;
1036         int ret = -ENOMEM;
1037
1038         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1039                     "BS_%d : In beiscsi_open_conn\n");
1040
1041         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1042         if (beiscsi_ep->ep_cid == 0xFFFF) {
1043                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1044                             "BS_%d : No free cid available\n");
1045                 return ret;
1046         }
1047
1048         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1049                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1050                     beiscsi_ep->ep_cid);
1051
1052         phba->ep_array[beiscsi_ep->ep_cid -
1053                        phba->fw_config.iscsi_cid_start] = ep;
1054         if (beiscsi_ep->ep_cid > (phba->fw_config.iscsi_cid_start +
1055                                   phba->params.cxns_per_ctrl * 2)) {
1056
1057                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1058                             "BS_%d : Failed in allocate iscsi cid\n");
1059                 goto free_ep;
1060         }
1061
1062         beiscsi_ep->cid_vld = 0;
1063         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1064                                 sizeof(struct tcp_connect_and_offload_in),
1065                                 &nonemb_cmd.dma);
1066         if (nonemb_cmd.va == NULL) {
1067
1068                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1069                             "BS_%d : Failed to allocate memory for"
1070                             " mgmt_open_connection\n");
1071
1072                 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1073                 return -ENOMEM;
1074         }
1075         nonemb_cmd.size = sizeof(struct tcp_connect_and_offload_in);
1076         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1077         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1078         if (!tag) {
1079                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1080                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1081                             beiscsi_ep->ep_cid);
1082
1083                 beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1084                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1085                                     nonemb_cmd.va, nonemb_cmd.dma);
1086                 return -EAGAIN;
1087         } else {
1088                 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1089                                          phba->ctrl.mcc_numtag[tag]);
1090         }
1091         wrb_num = (phba->ctrl.mcc_numtag[tag] & 0x00FF0000) >> 16;
1092         extd_status = (phba->ctrl.mcc_numtag[tag] & 0x0000FF00) >> 8;
1093         status = phba->ctrl.mcc_numtag[tag] & 0x000000FF;
1094         if (status || extd_status) {
1095                 beiscsi_log(phba, KERN_ERR,
1096                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1097                             "BS_%d : mgmt_open_connection Failed"
1098                             " status = %d extd_status = %d\n",
1099                             status, extd_status);
1100
1101                 free_mcc_tag(&phba->ctrl, tag);
1102                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1103                             nonemb_cmd.va, nonemb_cmd.dma);
1104                 goto free_ep;
1105         } else {
1106                 wrb = queue_get_wrb(mccq, wrb_num);
1107                 free_mcc_tag(&phba->ctrl, tag);
1108
1109                 ptcpcnct_out = embedded_payload(wrb);
1110                 beiscsi_ep = ep->dd_data;
1111                 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1112                 beiscsi_ep->cid_vld = 1;
1113                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1114                             "BS_%d : mgmt_open_connection Success\n");
1115         }
1116         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1117                             nonemb_cmd.va, nonemb_cmd.dma);
1118         return 0;
1119
1120 free_ep:
1121         beiscsi_free_ep(beiscsi_ep);
1122         return -EBUSY;
1123 }
1124
1125 /**
1126  * beiscsi_ep_connect - Ask chip to create TCP Conn
1127  * @scsi_host: Pointer to scsi_host structure
1128  * @dst_addr: The IP address of Target
1129  * @non_blocking: blocking or non-blocking call
1130  *
1131  * This routines first asks chip to create a connection and then allocates an EP
1132  */
1133 struct iscsi_endpoint *
1134 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1135                    int non_blocking)
1136 {
1137         struct beiscsi_hba *phba;
1138         struct beiscsi_endpoint *beiscsi_ep;
1139         struct iscsi_endpoint *ep;
1140         int ret;
1141
1142         if (shost)
1143                 phba = iscsi_host_priv(shost);
1144         else {
1145                 ret = -ENXIO;
1146                 printk(KERN_ERR
1147                        "beiscsi_ep_connect shost is NULL\n");
1148                 return ERR_PTR(ret);
1149         }
1150
1151         if (phba->state != BE_ADAPTER_UP) {
1152                 ret = -EBUSY;
1153                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1154                             "BS_%d : The Adapter state is Not UP\n");
1155                 return ERR_PTR(ret);
1156         }
1157
1158         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1159         if (!ep) {
1160                 ret = -ENOMEM;
1161                 return ERR_PTR(ret);
1162         }
1163
1164         beiscsi_ep = ep->dd_data;
1165         beiscsi_ep->phba = phba;
1166         beiscsi_ep->openiscsi_ep = ep;
1167         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1168         if (ret) {
1169                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1170                             "BS_%d : Failed in beiscsi_open_conn\n");
1171                 goto free_ep;
1172         }
1173
1174         return ep;
1175
1176 free_ep:
1177         iscsi_destroy_endpoint(ep);
1178         return ERR_PTR(ret);
1179 }
1180
1181 /**
1182  * beiscsi_ep_poll - Poll to see if connection is established
1183  * @ep: endpoint to be used
1184  * @timeout_ms: timeout specified in millisecs
1185  *
1186  * Poll to see if TCP connection established
1187  */
1188 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1189 {
1190         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1191
1192         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1193                     "BS_%d : In  beiscsi_ep_poll\n");
1194
1195         if (beiscsi_ep->cid_vld == 1)
1196                 return 1;
1197         else
1198                 return 0;
1199 }
1200
1201 /**
1202  * beiscsi_close_conn - Upload the  connection
1203  * @ep: The iscsi endpoint
1204  * @flag: The type of connection closure
1205  */
1206 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1207 {
1208         int ret = 0;
1209         unsigned int tag;
1210         struct beiscsi_hba *phba = beiscsi_ep->phba;
1211
1212         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1213         if (!tag) {
1214                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1215                             "BS_%d : upload failed for cid 0x%x\n",
1216                             beiscsi_ep->ep_cid);
1217
1218                 ret = -EAGAIN;
1219         } else {
1220                 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1221                                          phba->ctrl.mcc_numtag[tag]);
1222                 free_mcc_tag(&phba->ctrl, tag);
1223         }
1224         return ret;
1225 }
1226
1227 /**
1228  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1229  * @phba: The phba instance
1230  * @cid: The cid to free
1231  */
1232 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1233                                       unsigned int cid)
1234 {
1235         if (phba->conn_table[cid])
1236                 phba->conn_table[cid] = NULL;
1237         else {
1238                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1239                             "BS_%d : Connection table Not occupied.\n");
1240                 return -EINVAL;
1241         }
1242         return 0;
1243 }
1244
1245 /**
1246  * beiscsi_ep_disconnect - Tears down the TCP connection
1247  * @ep: endpoint to be used
1248  *
1249  * Tears down the TCP connection
1250  */
1251 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1252 {
1253         struct beiscsi_conn *beiscsi_conn;
1254         struct beiscsi_endpoint *beiscsi_ep;
1255         struct beiscsi_hba *phba;
1256         unsigned int tag;
1257         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1258         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1259
1260         beiscsi_ep = ep->dd_data;
1261         phba = beiscsi_ep->phba;
1262         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1263                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1264                     beiscsi_ep->ep_cid);
1265
1266         if (beiscsi_ep->conn) {
1267                 beiscsi_conn = beiscsi_ep->conn;
1268                 iscsi_suspend_queue(beiscsi_conn->conn);
1269                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1270                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1271         } else {
1272                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1273                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1274         }
1275
1276         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1277                                           beiscsi_ep->ep_cid,
1278                                           mgmt_invalidate_flag,
1279                                           savecfg_flag);
1280         if (!tag) {
1281                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1282                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1283                             beiscsi_ep->ep_cid);
1284         } else {
1285                 wait_event_interruptible(phba->ctrl.mcc_wait[tag],
1286                                          phba->ctrl.mcc_numtag[tag]);
1287                 free_mcc_tag(&phba->ctrl, tag);
1288         }
1289
1290         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1291         beiscsi_free_ep(beiscsi_ep);
1292         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1293         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1294 }
1295
1296 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1297 {
1298         switch (param_type) {
1299         case ISCSI_NET_PARAM:
1300                 switch (param) {
1301                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1302                 case ISCSI_NET_PARAM_IPV4_ADDR:
1303                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1304                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1305                 case ISCSI_NET_PARAM_IPV4_GW:
1306                 case ISCSI_NET_PARAM_IPV6_ADDR:
1307                 case ISCSI_NET_PARAM_VLAN_ID:
1308                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1309                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1310                         return S_IRUGO;
1311                 default:
1312                         return 0;
1313                 }
1314         case ISCSI_HOST_PARAM:
1315                 switch (param) {
1316                 case ISCSI_HOST_PARAM_HWADDRESS:
1317                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1318                 case ISCSI_HOST_PARAM_PORT_STATE:
1319                 case ISCSI_HOST_PARAM_PORT_SPEED:
1320                         return S_IRUGO;
1321                 default:
1322                         return 0;
1323                 }
1324         case ISCSI_PARAM:
1325                 switch (param) {
1326                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1327                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1328                 case ISCSI_PARAM_HDRDGST_EN:
1329                 case ISCSI_PARAM_DATADGST_EN:
1330                 case ISCSI_PARAM_CONN_ADDRESS:
1331                 case ISCSI_PARAM_CONN_PORT:
1332                 case ISCSI_PARAM_EXP_STATSN:
1333                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1334                 case ISCSI_PARAM_PERSISTENT_PORT:
1335                 case ISCSI_PARAM_PING_TMO:
1336                 case ISCSI_PARAM_RECV_TMO:
1337                 case ISCSI_PARAM_INITIAL_R2T_EN:
1338                 case ISCSI_PARAM_MAX_R2T:
1339                 case ISCSI_PARAM_IMM_DATA_EN:
1340                 case ISCSI_PARAM_FIRST_BURST:
1341                 case ISCSI_PARAM_MAX_BURST:
1342                 case ISCSI_PARAM_PDU_INORDER_EN:
1343                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1344                 case ISCSI_PARAM_ERL:
1345                 case ISCSI_PARAM_TARGET_NAME:
1346                 case ISCSI_PARAM_TPGT:
1347                 case ISCSI_PARAM_USERNAME:
1348                 case ISCSI_PARAM_PASSWORD:
1349                 case ISCSI_PARAM_USERNAME_IN:
1350                 case ISCSI_PARAM_PASSWORD_IN:
1351                 case ISCSI_PARAM_FAST_ABORT:
1352                 case ISCSI_PARAM_ABORT_TMO:
1353                 case ISCSI_PARAM_LU_RESET_TMO:
1354                 case ISCSI_PARAM_IFACE_NAME:
1355                 case ISCSI_PARAM_INITIATOR_NAME:
1356                         return S_IRUGO;
1357                 default:
1358                         return 0;
1359                 }
1360         }
1361
1362         return 0;
1363 }