drivers/scsi/be2iscsi/be_iscsi.c

   1 /**
   2  * Copyright (C) 2005 - 2015 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@avagotech.com)
  11  *
  12  * Contact Information:
  13  * linux-drivers@avagotech.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
  62         if (phba->state & BE_ADAPTER_PCI_ERR) {
  63                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
  64                             "BS_%d : PCI_ERROR Recovery\n");
  65                 return NULL;
  66         } else {
  67                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
  68                             "BS_%d : In beiscsi_session_create\n");
  69         }
  70
  71         if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) {
  72                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
  73                             "BS_%d : Cannot handle %d cmds."
  74                             "Max cmds per session supported is %d. Using %d."
  75                             "\n", cmds_max,
  76                             beiscsi_ep->phba->params.wrbs_per_cxn,
  77                             beiscsi_ep->phba->params.wrbs_per_cxn);
  78
  79                 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn;
  80         }
  81
  82         shost = phba->shost;
  83         cls_session = iscsi_session_setup(&beiscsi_iscsi_transport,
  84                                           shost, cmds_max,
  85                                           sizeof(*beiscsi_sess),
  86                                           sizeof(*io_task),
  87                                           initial_cmdsn, ISCSI_MAX_TARGET);
  88         if (!cls_session)
  89                 return NULL;
  90         sess = cls_session->dd_data;
  91         beiscsi_sess = sess->dd_data;
  92         beiscsi_sess->bhs_pool =  pci_pool_create("beiscsi_bhs_pool",
  93                                                    phba->pcidev,
  94                                                    sizeof(struct be_cmd_bhs),
  95                                                    64, 0);
  96         if (!beiscsi_sess->bhs_pool)
  97                 goto destroy_sess;
  98
  99         return cls_session;
 100 destroy_sess:
 101         iscsi_session_teardown(cls_session);
 102         return NULL;
 103 }
 104
 105 /**
 106  * beiscsi_session_destroy - destroys iscsi session
 107  * @cls_session:        pointer to iscsi cls session
 108  *
 109  * Destroys iSCSI session instance and releases
 110  * resources allocated for it.
 111  */
 112 void beiscsi_session_destroy(struct iscsi_cls_session *cls_session)
 113 {
 114         struct iscsi_session *sess = cls_session->dd_data;
 115         struct beiscsi_session *beiscsi_sess = sess->dd_data;
 116
 117         printk(KERN_INFO "In beiscsi_session_destroy\n");
 118         pci_pool_destroy(beiscsi_sess->bhs_pool);
 119         iscsi_session_teardown(cls_session);
 120 }
 121
 122 /**
 123  * beiscsi_conn_create - create an instance of iscsi connection
 124  * @cls_session: ptr to iscsi_cls_session
 125  * @cid: iscsi cid
 126  */
 127 struct iscsi_cls_conn *
 128 beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid)
 129 {
 130         struct beiscsi_hba *phba;
 131         struct Scsi_Host *shost;
 132         struct iscsi_cls_conn *cls_conn;
 133         struct beiscsi_conn *beiscsi_conn;
 134         struct iscsi_conn *conn;
 135         struct iscsi_session *sess;
 136         struct beiscsi_session *beiscsi_sess;
 137
 138         shost = iscsi_session_to_shost(cls_session);
 139         phba = iscsi_host_priv(shost);
 140
 141         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 142                     "BS_%d : In beiscsi_conn_create ,cid"
 143                     "from iscsi layer=%d\n", cid);
 144
 145         cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid);
 146         if (!cls_conn)
 147                 return NULL;
 148
 149         conn = cls_conn->dd_data;
 150         beiscsi_conn = conn->dd_data;
 151         beiscsi_conn->ep = NULL;
 152         beiscsi_conn->phba = phba;
 153         beiscsi_conn->conn = conn;
 154         sess = cls_session->dd_data;
 155         beiscsi_sess = sess->dd_data;
 156         beiscsi_conn->beiscsi_sess = beiscsi_sess;
 157         return cls_conn;
 158 }
 159
 160 /**
 161  * beiscsi_bindconn_cid - Bind the beiscsi_conn with phba connection table
 162  * @beiscsi_conn: The pointer to  beiscsi_conn structure
 163  * @phba: The phba instance
 164  * @cid: The cid to free
 165  */
 166 static int beiscsi_bindconn_cid(struct beiscsi_hba *phba,
 167                                 struct beiscsi_conn *beiscsi_conn,
 168                                 unsigned int cid)
 169 {
 170         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
 171
 172         if (phba->conn_table[cri_index]) {
 173                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 174                             "BS_%d : Connection table already occupied. Detected clash\n");
 175
 176                 return -EINVAL;
 177         } else {
 178                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 179                             "BS_%d : phba->conn_table[%d]=%p(beiscsi_conn)\n",
 180                             cri_index, beiscsi_conn);
 181
 182                 phba->conn_table[cri_index] = beiscsi_conn;
 183         }
 184         return 0;
 185 }
 186
 187 /**
 188  * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection
 189  * @cls_session: pointer to iscsi cls session
 190  * @cls_conn: pointer to iscsi cls conn
 191  * @transport_fd: EP handle(64 bit)
 192  *
 193  * This function binds the TCP Conn with iSCSI Connection and Session.
 194  */
 195 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session,
 196                       struct iscsi_cls_conn *cls_conn,
 197                       u64 transport_fd, int is_leading)
 198 {
 199         struct iscsi_conn *conn = cls_conn->dd_data;
 200         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 201         struct Scsi_Host *shost = iscsi_session_to_shost(cls_session);
 202         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 203         struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr;
 204         struct hwi_wrb_context *pwrb_context;
 205         struct beiscsi_endpoint *beiscsi_ep;
 206         struct iscsi_endpoint *ep;
 207
 208         ep = iscsi_lookup_endpoint(transport_fd);
 209         if (!ep)
 210                 return -EINVAL;
 211
 212         beiscsi_ep = ep->dd_data;
 213
 214         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
 215                 return -EINVAL;
 216
 217         if (beiscsi_ep->phba != phba) {
 218                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 219                             "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n",
 220                             beiscsi_ep->phba, phba);
 221
 222                 return -EEXIST;
 223         }
 224
 225         pwrb_context = &phwi_ctrlr->wrb_context[BE_GET_CRI_FROM_CID(
 226                                                 beiscsi_ep->ep_cid)];
 227
 228         beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid;
 229         beiscsi_conn->ep = beiscsi_ep;
 230         beiscsi_ep->conn = beiscsi_conn;
 231         beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset;
 232
 233         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 234                     "BS_%d : beiscsi_conn=%p conn=%p ep_cid=%d\n",
 235                     beiscsi_conn, conn, beiscsi_ep->ep_cid);
 236
 237         return beiscsi_bindconn_cid(phba, beiscsi_conn, beiscsi_ep->ep_cid);
 238 }
 239
 240 static int beiscsi_create_ipv4_iface(struct beiscsi_hba *phba)
 241 {
 242         if (phba->ipv4_iface)
 243                 return 0;
 244
 245         phba->ipv4_iface = iscsi_create_iface(phba->shost,
 246                                               &beiscsi_iscsi_transport,
 247                                               ISCSI_IFACE_TYPE_IPV4,
 248                                               0, 0);
 249         if (!phba->ipv4_iface) {
 250                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 251                             "BS_%d : Could not "
 252                             "create default IPv4 address.\n");
 253                 return -ENODEV;
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int beiscsi_create_ipv6_iface(struct beiscsi_hba *phba)
 260 {
 261         if (phba->ipv6_iface)
 262                 return 0;
 263
 264         phba->ipv6_iface = iscsi_create_iface(phba->shost,
 265                                               &beiscsi_iscsi_transport,
 266                                               ISCSI_IFACE_TYPE_IPV6,
 267                                               0, 0);
 268         if (!phba->ipv6_iface) {
 269                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 270                             "BS_%d : Could not "
 271                             "create default IPv6 address.\n");
 272                 return -ENODEV;
 273         }
 274
 275         return 0;
 276 }
 277
 278 void beiscsi_create_def_ifaces(struct beiscsi_hba *phba)
 279 {
 280         struct be_cmd_get_if_info_resp *if_info;
 281
 282         if (!mgmt_get_if_info(phba, BE2_IPV4, &if_info)) {
 283                 beiscsi_create_ipv4_iface(phba);
 284                 kfree(if_info);
 285         }
 286
 287         if (!mgmt_get_if_info(phba, BE2_IPV6, &if_info)) {
 288                 beiscsi_create_ipv6_iface(phba);
 289                 kfree(if_info);
 290         }
 291 }
 292
 293 void beiscsi_destroy_def_ifaces(struct beiscsi_hba *phba)
 294 {
 295         if (phba->ipv6_iface) {
 296                 iscsi_destroy_iface(phba->ipv6_iface);
 297                 phba->ipv6_iface = NULL;
 298         }
 299         if (phba->ipv4_iface) {
 300                 iscsi_destroy_iface(phba->ipv4_iface);
 301                 phba->ipv4_iface = NULL;
 302         }
 303 }
 304
 305 static int
 306 beiscsi_set_static_ip(struct Scsi_Host *shost,
 307                 struct iscsi_iface_param_info *iface_param,
 308                 void *data, uint32_t dt_len)
 309 {
 310         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 311         struct iscsi_iface_param_info *iface_ip = NULL;
 312         struct iscsi_iface_param_info *iface_subnet = NULL;
 313         struct nlattr *nla;
 314         int ret;
 315
 316
 317         switch (iface_param->param) {
 318         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 319                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 320                 if (nla)
 321                         iface_ip = nla_data(nla);
 322
 323                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 324                 if (nla)
 325                         iface_subnet = nla_data(nla);
 326                 break;
 327         case ISCSI_NET_PARAM_IPV4_ADDR:
 328                 iface_ip = iface_param;
 329                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 330                 if (nla)
 331                         iface_subnet = nla_data(nla);
 332                 break;
 333         case ISCSI_NET_PARAM_IPV4_SUBNET:
 334                 iface_subnet = iface_param;
 335                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 336                 if (nla)
 337                         iface_ip = nla_data(nla);
 338                 break;
 339         default:
 340                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 341                             "BS_%d : Unsupported param %d\n",
 342                             iface_param->param);
 343         }
 344
 345         if (!iface_ip || !iface_subnet) {
 346                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 347                             "BS_%d : IP and Subnet Mask required\n");
 348                 return -EINVAL;
 349         }
 350
 351         ret = mgmt_set_ip(phba, iface_ip, iface_subnet,
 352                         ISCSI_BOOTPROTO_STATIC);
 353
 354         return ret;
 355 }
 356
 357 /**
 358  * beiscsi_set_vlan_tag()- Set the VLAN TAG
 359  * @shost: Scsi Host for the driver instance
 360  * @iface_param: Interface paramters
 361  *
 362  * Set the VLAN TAG for the adapter or disable
 363  * the VLAN config
 364  *
 365  * returns
 366  *      Success: 0
 367  *      Failure: Non-Zero Value
 368  **/
 369 static int
 370 beiscsi_set_vlan_tag(struct Scsi_Host *shost,
 371                       struct iscsi_iface_param_info *iface_param)
 372 {
 373         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 374         int ret;
 375
 376         /* Get the Interface Handle */
 377         ret = mgmt_get_all_if_id(phba);
 378         if (ret) {
 379                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 380                             "BS_%d : Getting Interface Handle Failed\n");
 381                 return ret;
 382         }
 383
 384         switch (iface_param->param) {
 385         case ISCSI_NET_PARAM_VLAN_ENABLED:
 386                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 387                         ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 388                 break;
 389         case ISCSI_NET_PARAM_VLAN_TAG:
 390                 ret = mgmt_set_vlan(phba,
 391                                     *((uint16_t *)iface_param->value));
 392                 break;
 393         default:
 394                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
 395                             "BS_%d : Unknown Param Type : %d\n",
 396                             iface_param->param);
 397                 return -ENOSYS;
 398         }
 399         return ret;
 400 }
 401
 402
 403 static int
 404 beiscsi_set_ipv4(struct Scsi_Host *shost,
 405                 struct iscsi_iface_param_info *iface_param,
 406                 void *data, uint32_t dt_len)
 407 {
 408         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 409         int ret = 0;
 410
 411         /* Check the param */
 412         switch (iface_param->param) {
 413         case ISCSI_NET_PARAM_IFACE_ENABLE:
 414                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 415                         ret = beiscsi_create_ipv4_iface(phba);
 416                 else {
 417                         iscsi_destroy_iface(phba->ipv4_iface);
 418                         phba->ipv4_iface = NULL;
 419                 }
 420                 break;
 421         case ISCSI_NET_PARAM_IPV4_GW:
 422                 ret = mgmt_set_gateway(phba, iface_param);
 423                 break;
 424         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 425                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
 426                         ret = mgmt_set_ip(phba, iface_param,
 427                                         NULL, ISCSI_BOOTPROTO_DHCP);
 428                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
 429                         ret = beiscsi_set_static_ip(shost, iface_param,
 430                                                     data, dt_len);
 431                 else
 432                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 433                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 434                                     iface_param->value[0]);
 435                 break;
 436         case ISCSI_NET_PARAM_IPV4_SUBNET:
 437         case ISCSI_NET_PARAM_IPV4_ADDR:
 438                 ret = beiscsi_set_static_ip(shost, iface_param,
 439                                             data, dt_len);
 440                 break;
 441         case ISCSI_NET_PARAM_VLAN_ENABLED:
 442         case ISCSI_NET_PARAM_VLAN_TAG:
 443                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 444                 break;
 445         default:
 446                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 447                             "BS_%d : Param %d not supported\n",
 448                             iface_param->param);
 449         }
 450
 451         return ret;
 452 }
 453
 454 static int
 455 beiscsi_set_ipv6(struct Scsi_Host *shost,
 456                 struct iscsi_iface_param_info *iface_param,
 457                 void *data, uint32_t dt_len)
 458 {
 459         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 460         int ret = 0;
 461
 462         switch (iface_param->param) {
 463         case ISCSI_NET_PARAM_IFACE_ENABLE:
 464                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 465                         ret = beiscsi_create_ipv6_iface(phba);
 466                 else {
 467                         iscsi_destroy_iface(phba->ipv6_iface);
 468                         phba->ipv6_iface = NULL;
 469                 }
 470                 break;
 471         case ISCSI_NET_PARAM_IPV6_ADDR:
 472                 ret = mgmt_set_ip(phba, iface_param, NULL,
 473                                   ISCSI_BOOTPROTO_STATIC);
 474                 break;
 475         case ISCSI_NET_PARAM_VLAN_ENABLED:
 476         case ISCSI_NET_PARAM_VLAN_TAG:
 477                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 478                 break;
 479         default:
 480                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 481                             "BS_%d : Param %d not supported\n",
 482                             iface_param->param);
 483         }
 484
 485         return ret;
 486 }
 487
 488 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 489                 void *data, uint32_t dt_len)
 490 {
 491         struct iscsi_iface_param_info *iface_param = NULL;
 492         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 493         struct nlattr *attrib;
 494         uint32_t rm_len = dt_len;
 495         int ret = 0 ;
 496
 497         if (phba->state & BE_ADAPTER_PCI_ERR) {
 498                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 499                             "BS_%d : In PCI_ERROR Recovery\n");
 500                 return -EBUSY;
 501         }
 502
 503         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 504                 iface_param = nla_data(attrib);
 505
 506                 if (iface_param->param_type != ISCSI_NET_PARAM)
 507                         continue;
 508
 509                 /*
 510                  * BE2ISCSI only supports 1 interface
 511                  */
 512                 if (iface_param->iface_num) {
 513                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 514                                     "BS_%d : Invalid iface_num %d."
 515                                     "Only iface_num 0 is supported.\n",
 516                                     iface_param->iface_num);
 517
 518                         return -EINVAL;
 519                 }
 520
 521                 switch (iface_param->iface_type) {
 522                 case ISCSI_IFACE_TYPE_IPV4:
 523                         ret = beiscsi_set_ipv4(shost, iface_param,
 524                                                data, dt_len);
 525                         break;
 526                 case ISCSI_IFACE_TYPE_IPV6:
 527                         ret = beiscsi_set_ipv6(shost, iface_param,
 528                                                data, dt_len);
 529                         break;
 530                 default:
 531                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 532                                     "BS_%d : Invalid iface type :%d passed\n",
 533                                     iface_param->iface_type);
 534                         break;
 535                 }
 536
 537                 if (ret)
 538                         return ret;
 539         }
 540
 541         return ret;
 542 }
 543
 544 static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
 545                 struct iscsi_iface *iface, int param,
 546                 char *buf)
 547 {
 548         struct be_cmd_get_if_info_resp *if_info;
 549         int len, ip_type = BE2_IPV4;
 550
 551         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 552                 ip_type = BE2_IPV6;
 553
 554         len = mgmt_get_if_info(phba, ip_type, &if_info);
 555         if (len)
 556                 return len;
 557
 558         switch (param) {
 559         case ISCSI_NET_PARAM_IPV4_ADDR:
 560                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
 561                 break;
 562         case ISCSI_NET_PARAM_IPV6_ADDR:
 563                 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
 564                 break;
 565         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 566                 if (!if_info->dhcp_state)
 567                         len = sprintf(buf, "static\n");
 568                 else
 569                         len = sprintf(buf, "dhcp\n");
 570                 break;
 571         case ISCSI_NET_PARAM_IPV4_SUBNET:
 572                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
 573                 break;
 574         case ISCSI_NET_PARAM_VLAN_ENABLED:
 575                 len = sprintf(buf, "%s\n",
 576                               (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ?
 577                               "disable" : "enable");
 578                 break;
 579         case ISCSI_NET_PARAM_VLAN_ID:
 580                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 581                         len = -EINVAL;
 582                 else
 583                         len = sprintf(buf, "%d\n",
 584                                      (if_info->vlan_priority &
 585                                      ISCSI_MAX_VLAN_ID));
 586                 break;
 587         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 588                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 589                         len = -EINVAL;
 590                 else
 591                         len = sprintf(buf, "%d\n",
 592                                      ((if_info->vlan_priority >> 13) &
 593                                      ISCSI_MAX_VLAN_PRIORITY));
 594                 break;
 595         default:
 596                 WARN_ON(1);
 597         }
 598
 599         kfree(if_info);
 600         return len;
 601 }
 602
 603 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 604                 enum iscsi_param_type param_type,
 605                 int param, char *buf)
 606 {
 607         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 608         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 609         struct be_cmd_get_def_gateway_resp gateway;
 610         int len = -ENOSYS;
 611
 612         if (phba->state & BE_ADAPTER_PCI_ERR) {
 613                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 614                             "BS_%d : In PCI_ERROR Recovery\n");
 615                 return -EBUSY;
 616         }
 617
 618         switch (param) {
 619         case ISCSI_NET_PARAM_IPV4_ADDR:
 620         case ISCSI_NET_PARAM_IPV4_SUBNET:
 621         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 622         case ISCSI_NET_PARAM_IPV6_ADDR:
 623         case ISCSI_NET_PARAM_VLAN_ENABLED:
 624         case ISCSI_NET_PARAM_VLAN_ID:
 625         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 626                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 627                 break;
 628         case ISCSI_NET_PARAM_IFACE_ENABLE:
 629                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 630                         len = sprintf(buf, "%s\n",
 631                                       phba->ipv4_iface ? "enable" : "disable");
 632                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 633                         len = sprintf(buf, "%s\n",
 634                                       phba->ipv6_iface ? "enable" : "disable");
 635                 break;
 636         case ISCSI_NET_PARAM_IPV4_GW:
 637                 memset(&gateway, 0, sizeof(gateway));
 638                 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
 639                 if (!len)
 640                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 641                 break;
 642         default:
 643                 len = -ENOSYS;
 644         }
 645
 646         return len;
 647 }
 648
 649 /**
 650  * beiscsi_ep_get_param - get the iscsi parameter
 651  * @ep: pointer to iscsi ep
 652  * @param: parameter type identifier
 653  * @buf: buffer pointer
 654  *
 655  * returns iscsi parameter
 656  */
 657 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 658                            enum iscsi_param param, char *buf)
 659 {
 660         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 661         int len = 0;
 662
 663         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 664                     BEISCSI_LOG_CONFIG,
 665                     "BS_%d : In beiscsi_ep_get_param,"
 666                     " param= %d\n", param);
 667
 668         switch (param) {
 669         case ISCSI_PARAM_CONN_PORT:
 670                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 671                 break;
 672         case ISCSI_PARAM_CONN_ADDRESS:
 673                 if (beiscsi_ep->ip_type == BE2_IPV4)
 674                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 675                 else
 676                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 677                 break;
 678         default:
 679                 return -ENOSYS;
 680         }
 681         return len;
 682 }
 683
 684 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 685                       enum iscsi_param param, char *buf, int buflen)
 686 {
 687         struct iscsi_conn *conn = cls_conn->dd_data;
 688         struct iscsi_session *session = conn->session;
 689         struct beiscsi_hba *phba = NULL;
 690         int ret;
 691
 692         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 693         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 694                     "BS_%d : In beiscsi_conn_set_param,"
 695                     " param= %d\n", param);
 696
 697         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 698         if (ret)
 699                 return ret;
 700         /*
 701          * If userspace tried to set the value to higher than we can
 702          * support override here.
 703          */
 704         switch (param) {
 705         case ISCSI_PARAM_FIRST_BURST:
 706                 if (session->first_burst > 8192)
 707                         session->first_burst = 8192;
 708                 break;
 709         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 710                 if (conn->max_recv_dlength > 65536)
 711                         conn->max_recv_dlength = 65536;
 712                 break;
 713         case ISCSI_PARAM_MAX_BURST:
 714                 if (session->max_burst > 262144)
 715                         session->max_burst = 262144;
 716                 break;
 717         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 718                 if (conn->max_xmit_dlength > 65536)
 719                         conn->max_xmit_dlength = 65536;
 720         default:
 721                 return 0;
 722         }
 723
 724         return 0;
 725 }
 726
 727 /**
 728  * beiscsi_get_initname - Read Initiator Name from flash
 729  * @buf: buffer bointer
 730  * @phba: The device priv structure instance
 731  *
 732  * returns number of bytes
 733  */
 734 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 735 {
 736         int rc;
 737         unsigned int tag;
 738         struct be_mcc_wrb *wrb;
 739         struct be_cmd_hba_name *resp;
 740
 741         tag = be_cmd_get_initname(phba);
 742         if (!tag) {
 743                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 744                             "BS_%d : Getting Initiator Name Failed\n");
 745
 746                 return -EBUSY;
 747         }
 748
 749         rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
 750         if (rc) {
 751                 beiscsi_log(phba, KERN_ERR,
 752                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 753                             "BS_%d : Initiator Name MBX Failed\n");
 754                 return rc;
 755         }
 756
 757         resp = embedded_payload(wrb);
 758         rc = sprintf(buf, "%s\n", resp->initiator_name);
 759         return rc;
 760 }
 761
 762 /**
 763  * beiscsi_get_port_state - Get the Port State
 764  * @shost : pointer to scsi_host structure
 765  *
 766  */
 767 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 768 {
 769         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 770         struct iscsi_cls_host *ihost = shost->shost_data;
 771
 772         ihost->port_state = (phba->state & BE_ADAPTER_LINK_UP) ?
 773                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 774 }
 775
 776 /**
 777  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 778  * @shost : pointer to scsi_host structure
 779  *
 780  */
 781 static void beiscsi_get_port_speed(struct Scsi_Host *shost)
 782 {
 783         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 784         struct iscsi_cls_host *ihost = shost->shost_data;
 785
 786         switch (phba->port_speed) {
 787         case BE2ISCSI_LINK_SPEED_10MBPS:
 788                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 789                 break;
 790         case BE2ISCSI_LINK_SPEED_100MBPS:
 791                 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
 792                 break;
 793         case BE2ISCSI_LINK_SPEED_1GBPS:
 794                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 795                 break;
 796         case BE2ISCSI_LINK_SPEED_10GBPS:
 797                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 798                 break;
 799         case BE2ISCSI_LINK_SPEED_25GBPS:
 800                 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
 801                 break;
 802         case BE2ISCSI_LINK_SPEED_40GBPS:
 803                 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
 804                 break;
 805         default:
 806                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 807         }
 808 }
 809
 810 /**
 811  * beiscsi_get_host_param - get the iscsi parameter
 812  * @shost: pointer to scsi_host structure
 813  * @param: parameter type identifier
 814  * @buf: buffer pointer
 815  *
 816  * returns host parameter
 817  */
 818 int beiscsi_get_host_param(struct Scsi_Host *shost,
 819                            enum iscsi_host_param param, char *buf)
 820 {
 821         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 822         int status = 0;
 823
 824
 825         if (phba->state & BE_ADAPTER_PCI_ERR) {
 826                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 827                             "BS_%d : In PCI_ERROR Recovery\n");
 828                 return -EBUSY;
 829         } else {
 830                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 831                             "BS_%d : In beiscsi_get_host_param,"
 832                             " param = %d\n", param);
 833         }
 834
 835         switch (param) {
 836         case ISCSI_HOST_PARAM_HWADDRESS:
 837                 status = beiscsi_get_macaddr(buf, phba);
 838                 if (status < 0) {
 839                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 840                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 841                         return status;
 842                 }
 843                 break;
 844         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 845                 status = beiscsi_get_initname(buf, phba);
 846                 if (status < 0) {
 847                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 848                                     "BS_%d : Retreiving Initiator Name Failed\n");
 849                         return status;
 850                 }
 851                 break;
 852         case ISCSI_HOST_PARAM_PORT_STATE:
 853                 beiscsi_get_port_state(shost);
 854                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 855                 break;
 856         case ISCSI_HOST_PARAM_PORT_SPEED:
 857                 beiscsi_get_port_speed(shost);
 858                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 859                 break;
 860         default:
 861                 return iscsi_host_get_param(shost, param, buf);
 862         }
 863         return status;
 864 }
 865
 866 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 867 {
 868         struct be_cmd_get_nic_conf_resp resp;
 869         int rc;
 870
 871         if (phba->mac_addr_set)
 872                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 873
 874         memset(&resp, 0, sizeof(resp));
 875         rc = mgmt_get_nic_conf(phba, &resp);
 876         if (rc)
 877                 return rc;
 878
 879         phba->mac_addr_set = true;
 880         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 881         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 882 }
 883
 884 /**
 885  * beiscsi_conn_get_stats - get the iscsi stats
 886  * @cls_conn: pointer to iscsi cls conn
 887  * @stats: pointer to iscsi_stats structure
 888  *
 889  * returns iscsi stats
 890  */
 891 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 892                             struct iscsi_stats *stats)
 893 {
 894         struct iscsi_conn *conn = cls_conn->dd_data;
 895         struct beiscsi_hba *phba = NULL;
 896
 897         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 898         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 899                     "BS_%d : In beiscsi_conn_get_stats\n");
 900
 901         stats->txdata_octets = conn->txdata_octets;
 902         stats->rxdata_octets = conn->rxdata_octets;
 903         stats->dataout_pdus = conn->dataout_pdus_cnt;
 904         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 905         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 906         stats->datain_pdus = conn->datain_pdus_cnt;
 907         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 908         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 909         stats->r2t_pdus = conn->r2t_pdus_cnt;
 910         stats->digest_err = 0;
 911         stats->timeout_err = 0;
 912         stats->custom_length = 1;
 913         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 914         stats->custom[0].value = conn->eh_abort_cnt;
 915 }
 916
 917 /**
 918  * beiscsi_set_params_for_offld - get the parameters for offload
 919  * @beiscsi_conn: pointer to beiscsi_conn
 920  * @params: pointer to offload_params structure
 921  */
 922 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 923                                           struct beiscsi_offload_params *params)
 924 {
 925         struct iscsi_conn *conn = beiscsi_conn->conn;
 926         struct iscsi_session *session = conn->session;
 927
 928         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 929                       params, session->max_burst);
 930         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 931                       max_send_data_segment_length, params,
 932                       conn->max_xmit_dlength);
 933         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 934                       params, session->first_burst);
 935         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 936                       session->erl);
 937         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 938                       conn->datadgst_en);
 939         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 940                       conn->hdrdgst_en);
 941         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 942                       session->initial_r2t_en);
 943         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 944                       session->imm_data_en);
 945         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 946                       data_seq_inorder, params,
 947                       session->dataseq_inorder_en);
 948         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 949                       pdu_seq_inorder, params,
 950                       session->pdu_inorder_en);
 951         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
 952                       session->max_r2t);
 953         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 954                       (conn->exp_statsn - 1));
 955         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 956                       max_recv_data_segment_length, params,
 957                       conn->max_recv_dlength);
 958
 959 }
 960
 961 /**
 962  * beiscsi_conn_start - offload of session to chip
 963  * @cls_conn: pointer to beiscsi_conn
 964  */
 965 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 966 {
 967         struct iscsi_conn *conn = cls_conn->dd_data;
 968         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 969         struct beiscsi_endpoint *beiscsi_ep;
 970         struct beiscsi_offload_params params;
 971         struct beiscsi_hba *phba;
 972
 973         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 974
 975         if (phba->state & BE_ADAPTER_PCI_ERR) {
 976                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 977                             "BS_%d : In PCI_ERROR Recovery\n");
 978                 return -EBUSY;
 979         } else {
 980                 beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 981                             BEISCSI_LOG_CONFIG,
 982                             "BS_%d : In beiscsi_conn_start\n");
 983         }
 984
 985         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 986         beiscsi_ep = beiscsi_conn->ep;
 987         if (!beiscsi_ep)
 988                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 989                             BEISCSI_LOG_CONFIG,
 990                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 991
 992         beiscsi_conn->login_in_progress = 0;
 993         beiscsi_set_params_for_offld(beiscsi_conn, &params);
 994         beiscsi_offload_connection(beiscsi_conn, &params);
 995         iscsi_conn_start(cls_conn);
 996         return 0;
 997 }
 998
 999 /**
1000  * beiscsi_get_cid - Allocate a cid
1001  * @phba: The phba instance
1002  */
1003 static int beiscsi_get_cid(struct beiscsi_hba *phba)
1004 {
1005         unsigned short cid = 0xFFFF, cid_from_ulp;
1006         struct ulp_cid_info *cid_info = NULL;
1007         uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
1008
1009         /* Find the ULP which has more CID available */
1010         cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
1011                           BEISCSI_ULP0_AVLBL_CID(phba) : 0;
1012         cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
1013                           BEISCSI_ULP1_AVLBL_CID(phba) : 0;
1014         cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
1015                         BEISCSI_ULP0 : BEISCSI_ULP1;
1016
1017         if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {
1018                 cid_info = phba->cid_array_info[cid_from_ulp];
1019                 if (!cid_info->avlbl_cids)
1020                         return cid;
1021
1022                 cid = cid_info->cid_array[cid_info->cid_alloc++];
1023
1024                 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(
1025                                            phba, cid_from_ulp))
1026                         cid_info->cid_alloc = 0;
1027
1028                 cid_info->avlbl_cids--;
1029         }
1030         return cid;
1031 }
1032
1033 /**
1034  * beiscsi_put_cid - Free the cid
1035  * @phba: The phba for which the cid is being freed
1036  * @cid: The cid to free
1037  */
1038 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1039 {
1040         uint16_t cid_post_ulp;
1041         struct hwi_controller *phwi_ctrlr;
1042         struct hwi_wrb_context *pwrb_context;
1043         struct ulp_cid_info *cid_info = NULL;
1044         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1045
1046         phwi_ctrlr = phba->phwi_ctrlr;
1047         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1048         cid_post_ulp = pwrb_context->ulp_num;
1049
1050         cid_info = phba->cid_array_info[cid_post_ulp];
1051         cid_info->avlbl_cids++;
1052
1053         cid_info->cid_array[cid_info->cid_free++] = cid;
1054         if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1055                 cid_info->cid_free = 0;
1056 }
1057
1058 /**
1059  * beiscsi_free_ep - free endpoint
1060  * @ep: pointer to iscsi endpoint structure
1061  */
1062 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1063 {
1064         struct beiscsi_hba *phba = beiscsi_ep->phba;
1065         struct beiscsi_conn *beiscsi_conn;
1066
1067         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1068         beiscsi_ep->phba = NULL;
1069         phba->ep_array[BE_GET_CRI_FROM_CID
1070                        (beiscsi_ep->ep_cid)] = NULL;
1071
1072         /**
1073          * Check if any connection resource allocated by driver
1074          * is to be freed.This case occurs when target redirection
1075          * or connection retry is done.
1076          **/
1077         if (!beiscsi_ep->conn)
1078                 return;
1079
1080         beiscsi_conn = beiscsi_ep->conn;
1081         if (beiscsi_conn->login_in_progress) {
1082                 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1083                                                beiscsi_conn->task);
1084                 beiscsi_conn->login_in_progress = 0;
1085         }
1086 }
1087
1088 /**
1089  * beiscsi_open_conn - Ask FW to open a TCP connection
1090  * @ep: endpoint to be used
1091  * @src_addr: The source IP address
1092  * @dst_addr: The Destination  IP address
1093  *
1094  * Asks the FW to open a TCP connection
1095  */
1096 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1097                              struct sockaddr *src_addr,
1098                              struct sockaddr *dst_addr, int non_blocking)
1099 {
1100         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1101         struct beiscsi_hba *phba = beiscsi_ep->phba;
1102         struct tcp_connect_and_offload_out *ptcpcnct_out;
1103         struct be_dma_mem nonemb_cmd;
1104         unsigned int tag, req_memsize;
1105         int ret = -ENOMEM;
1106
1107         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1108                     "BS_%d : In beiscsi_open_conn\n");
1109
1110         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1111         if (beiscsi_ep->ep_cid == 0xFFFF) {
1112                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1113                             "BS_%d : No free cid available\n");
1114                 return ret;
1115         }
1116
1117         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1118                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1119                     beiscsi_ep->ep_cid);
1120
1121         phba->ep_array[BE_GET_CRI_FROM_CID
1122                        (beiscsi_ep->ep_cid)] = ep;
1123
1124         beiscsi_ep->cid_vld = 0;
1125
1126         if (is_chip_be2_be3r(phba))
1127                 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1128         else
1129                 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1130
1131         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1132                                 req_memsize,
1133                                 &nonemb_cmd.dma);
1134         if (nonemb_cmd.va == NULL) {
1135
1136                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1137                             "BS_%d : Failed to allocate memory for"
1138                             " mgmt_open_connection\n");
1139
1140                 beiscsi_free_ep(beiscsi_ep);
1141                 return -ENOMEM;
1142         }
1143         nonemb_cmd.size = req_memsize;
1144         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1145         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1146         if (tag <= 0) {
1147                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1148                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1149                             beiscsi_ep->ep_cid);
1150
1151                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1152                                     nonemb_cmd.va, nonemb_cmd.dma);
1153                 beiscsi_free_ep(beiscsi_ep);
1154                 return -EAGAIN;
1155         }
1156
1157         ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1158         if (ret) {
1159                 beiscsi_log(phba, KERN_ERR,
1160                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1161                             "BS_%d : mgmt_open_connection Failed");
1162
1163                 if (ret != -EBUSY)
1164                         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1165                                             nonemb_cmd.va, nonemb_cmd.dma);
1166
1167                 beiscsi_free_ep(beiscsi_ep);
1168                 return ret;
1169         }
1170
1171         ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1172         beiscsi_ep = ep->dd_data;
1173         beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1174         beiscsi_ep->cid_vld = 1;
1175         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1176                     "BS_%d : mgmt_open_connection Success\n");
1177
1178         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1179                             nonemb_cmd.va, nonemb_cmd.dma);
1180         return 0;
1181 }
1182
1183 /**
1184  * beiscsi_ep_connect - Ask chip to create TCP Conn
1185  * @scsi_host: Pointer to scsi_host structure
1186  * @dst_addr: The IP address of Target
1187  * @non_blocking: blocking or non-blocking call
1188  *
1189  * This routines first asks chip to create a connection and then allocates an EP
1190  */
1191 struct iscsi_endpoint *
1192 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1193                    int non_blocking)
1194 {
1195         struct beiscsi_hba *phba;
1196         struct beiscsi_endpoint *beiscsi_ep;
1197         struct iscsi_endpoint *ep;
1198         int ret;
1199
1200         if (shost)
1201                 phba = iscsi_host_priv(shost);
1202         else {
1203                 ret = -ENXIO;
1204                 printk(KERN_ERR
1205                        "beiscsi_ep_connect shost is NULL\n");
1206                 return ERR_PTR(ret);
1207         }
1208
1209         if (beiscsi_error(phba)) {
1210                 ret = -EIO;
1211                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1212                             "BS_%d : The FW state Not Stable!!!\n");
1213                 return ERR_PTR(ret);
1214         }
1215
1216         if (phba->state & BE_ADAPTER_PCI_ERR) {
1217                 ret = -EBUSY;
1218                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1219                             "BS_%d : In PCI_ERROR Recovery\n");
1220                 return ERR_PTR(ret);
1221         } else if (phba->state & BE_ADAPTER_LINK_DOWN) {
1222                 ret = -EBUSY;
1223                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1224                             "BS_%d : The Adapter Port state is Down!!!\n");
1225                 return ERR_PTR(ret);
1226         }
1227
1228         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1229         if (!ep) {
1230                 ret = -ENOMEM;
1231                 return ERR_PTR(ret);
1232         }
1233
1234         beiscsi_ep = ep->dd_data;
1235         beiscsi_ep->phba = phba;
1236         beiscsi_ep->openiscsi_ep = ep;
1237         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1238         if (ret) {
1239                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1240                             "BS_%d : Failed in beiscsi_open_conn\n");
1241                 goto free_ep;
1242         }
1243
1244         return ep;
1245
1246 free_ep:
1247         iscsi_destroy_endpoint(ep);
1248         return ERR_PTR(ret);
1249 }
1250
1251 /**
1252  * beiscsi_ep_poll - Poll to see if connection is established
1253  * @ep: endpoint to be used
1254  * @timeout_ms: timeout specified in millisecs
1255  *
1256  * Poll to see if TCP connection established
1257  */
1258 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1259 {
1260         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1261
1262         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1263                     "BS_%d : In  beiscsi_ep_poll\n");
1264
1265         if (beiscsi_ep->cid_vld == 1)
1266                 return 1;
1267         else
1268                 return 0;
1269 }
1270
1271 /**
1272  * beiscsi_flush_cq()- Flush the CQ created.
1273  * @phba: ptr device priv structure.
1274  *
1275  * Before the connection resource are freed flush
1276  * all the CQ enteries
1277  **/
1278 static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1279 {
1280         uint16_t i;
1281         struct be_eq_obj *pbe_eq;
1282         struct hwi_controller *phwi_ctrlr;
1283         struct hwi_context_memory *phwi_context;
1284
1285         phwi_ctrlr = phba->phwi_ctrlr;
1286         phwi_context = phwi_ctrlr->phwi_ctxt;
1287
1288         for (i = 0; i < phba->num_cpus; i++) {
1289                 pbe_eq = &phwi_context->be_eq[i];
1290                 irq_poll_disable(&pbe_eq->iopoll);
1291                 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1292                 irq_poll_enable(&pbe_eq->iopoll);
1293         }
1294 }
1295
1296 /**
1297  * beiscsi_close_conn - Upload the  connection
1298  * @ep: The iscsi endpoint
1299  * @flag: The type of connection closure
1300  */
1301 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1302 {
1303         int ret = 0;
1304         unsigned int tag;
1305         struct beiscsi_hba *phba = beiscsi_ep->phba;
1306
1307         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1308         if (!tag) {
1309                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1310                             "BS_%d : upload failed for cid 0x%x\n",
1311                             beiscsi_ep->ep_cid);
1312
1313                 ret = -EAGAIN;
1314         }
1315
1316         ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1317
1318         /* Flush the CQ entries */
1319         beiscsi_flush_cq(phba);
1320
1321         return ret;
1322 }
1323
1324 /**
1325  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1326  * @phba: The phba instance
1327  * @cid: The cid to free
1328  */
1329 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1330                                       unsigned int cid)
1331 {
1332         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1333
1334         if (phba->conn_table[cri_index])
1335                 phba->conn_table[cri_index] = NULL;
1336         else {
1337                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1338                             "BS_%d : Connection table Not occupied.\n");
1339                 return -EINVAL;
1340         }
1341         return 0;
1342 }
1343
1344 /**
1345  * beiscsi_ep_disconnect - Tears down the TCP connection
1346  * @ep: endpoint to be used
1347  *
1348  * Tears down the TCP connection
1349  */
1350 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1351 {
1352         struct beiscsi_conn *beiscsi_conn;
1353         struct beiscsi_endpoint *beiscsi_ep;
1354         struct beiscsi_hba *phba;
1355         unsigned int tag;
1356         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1357         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1358
1359         beiscsi_ep = ep->dd_data;
1360         phba = beiscsi_ep->phba;
1361         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1362                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1363                     beiscsi_ep->ep_cid);
1364
1365         if (beiscsi_ep->conn) {
1366                 beiscsi_conn = beiscsi_ep->conn;
1367                 iscsi_suspend_queue(beiscsi_conn->conn);
1368                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1369                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1370         } else {
1371                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1372                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1373         }
1374
1375         if (phba->state & BE_ADAPTER_PCI_ERR) {
1376                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1377                             "BS_%d : PCI_ERROR Recovery\n");
1378                 goto free_ep;
1379         }
1380
1381         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1382                                           beiscsi_ep->ep_cid,
1383                                           mgmt_invalidate_flag,
1384                                           savecfg_flag);
1385         if (!tag) {
1386                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1387                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1388                             beiscsi_ep->ep_cid);
1389         }
1390
1391         beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1392         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1393 free_ep:
1394         msleep(BEISCSI_LOGOUT_SYNC_DELAY);
1395         beiscsi_free_ep(beiscsi_ep);
1396         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1397         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1398 }
1399
1400 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1401 {
1402         switch (param_type) {
1403         case ISCSI_NET_PARAM:
1404                 switch (param) {
1405                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1406                 case ISCSI_NET_PARAM_IPV4_ADDR:
1407                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1408                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1409                 case ISCSI_NET_PARAM_IPV4_GW:
1410                 case ISCSI_NET_PARAM_IPV6_ADDR:
1411                 case ISCSI_NET_PARAM_VLAN_ID:
1412                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1413                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1414                         return S_IRUGO;
1415                 default:
1416                         return 0;
1417                 }
1418         case ISCSI_HOST_PARAM:
1419                 switch (param) {
1420                 case ISCSI_HOST_PARAM_HWADDRESS:
1421                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1422                 case ISCSI_HOST_PARAM_PORT_STATE:
1423                 case ISCSI_HOST_PARAM_PORT_SPEED:
1424                         return S_IRUGO;
1425                 default:
1426                         return 0;
1427                 }
1428         case ISCSI_PARAM:
1429                 switch (param) {
1430                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1431                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1432                 case ISCSI_PARAM_HDRDGST_EN:
1433                 case ISCSI_PARAM_DATADGST_EN:
1434                 case ISCSI_PARAM_CONN_ADDRESS:
1435                 case ISCSI_PARAM_CONN_PORT:
1436                 case ISCSI_PARAM_EXP_STATSN:
1437                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1438                 case ISCSI_PARAM_PERSISTENT_PORT:
1439                 case ISCSI_PARAM_PING_TMO:
1440                 case ISCSI_PARAM_RECV_TMO:
1441                 case ISCSI_PARAM_INITIAL_R2T_EN:
1442                 case ISCSI_PARAM_MAX_R2T:
1443                 case ISCSI_PARAM_IMM_DATA_EN:
1444                 case ISCSI_PARAM_FIRST_BURST:
1445                 case ISCSI_PARAM_MAX_BURST:
1446                 case ISCSI_PARAM_PDU_INORDER_EN:
1447                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1448                 case ISCSI_PARAM_ERL:
1449                 case ISCSI_PARAM_TARGET_NAME:
1450                 case ISCSI_PARAM_TPGT:
1451                 case ISCSI_PARAM_USERNAME:
1452                 case ISCSI_PARAM_PASSWORD:
1453                 case ISCSI_PARAM_USERNAME_IN:
1454                 case ISCSI_PARAM_PASSWORD_IN:
1455                 case ISCSI_PARAM_FAST_ABORT:
1456                 case ISCSI_PARAM_ABORT_TMO:
1457                 case ISCSI_PARAM_LU_RESET_TMO:
1458                 case ISCSI_PARAM_IFACE_NAME:
1459                 case ISCSI_PARAM_INITIATOR_NAME:
1460                         return S_IRUGO;
1461                 default:
1462                         return 0;
1463                 }
1464         }
1465
1466         return 0;
1467 }