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 /**
 306  * beiscsi_set_vlan_tag()- Set the VLAN TAG
 307  * @shost: Scsi Host for the driver instance
 308  * @iface_param: Interface paramters
 309  *
 310  * Set the VLAN TAG for the adapter or disable
 311  * the VLAN config
 312  *
 313  * returns
 314  *      Success: 0
 315  *      Failure: Non-Zero Value
 316  **/
 317 static int
 318 beiscsi_iface_config_vlan(struct Scsi_Host *shost,
 319                           struct iscsi_iface_param_info *iface_param)
 320 {
 321         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 322         int ret = -EPERM;
 323
 324         switch (iface_param->param) {
 325         case ISCSI_NET_PARAM_VLAN_ENABLED:
 326                 ret = 0;
 327                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 328                         ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 329                 break;
 330         case ISCSI_NET_PARAM_VLAN_TAG:
 331                 ret = beiscsi_if_set_vlan(phba,
 332                                           *((uint16_t *)iface_param->value));
 333                 break;
 334         }
 335         return ret;
 336 }
 337
 338
 339 static int
 340 beiscsi_iface_config_ipv4(struct Scsi_Host *shost,
 341                           struct iscsi_iface_param_info *info,
 342                           void *data, uint32_t dt_len)
 343 {
 344         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 345         u8 *ip = NULL, *subnet = NULL, *gw;
 346         struct nlattr *nla;
 347         int ret = -EPERM;
 348
 349         /* Check the param */
 350         switch (info->param) {
 351         case ISCSI_NET_PARAM_IFACE_ENABLE:
 352                 if (info->value[0] == ISCSI_IFACE_ENABLE)
 353                         ret = beiscsi_create_ipv4_iface(phba);
 354                 else {
 355                         iscsi_destroy_iface(phba->ipv4_iface);
 356                         phba->ipv4_iface = NULL;
 357                 }
 358                 break;
 359         case ISCSI_NET_PARAM_IPV4_GW:
 360                 gw = info->value;
 361                 ret = beiscsi_if_set_gw(phba, BE2_IPV4, gw);
 362                 break;
 363         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 364                 if (info->value[0] == ISCSI_BOOTPROTO_DHCP)
 365                         ret = beiscsi_if_en_dhcp(phba, BE2_IPV4);
 366                 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC)
 367                         /* release DHCP IP address */
 368                         ret = beiscsi_if_en_static(phba, BE2_IPV4, NULL, NULL);
 369                 else
 370                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 371                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 372                                     info->value[0]);
 373                 break;
 374         case ISCSI_NET_PARAM_IPV4_ADDR:
 375                 ip = info->value;
 376                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET);
 377                 if (nla) {
 378                         info = nla_data(nla);
 379                         subnet = info->value;
 380                 }
 381                 ret = beiscsi_if_en_static(phba, BE2_IPV4, ip, subnet);
 382                 break;
 383         case ISCSI_NET_PARAM_IPV4_SUBNET:
 384                 /*
 385                  * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP
 386                  * and subnet both. Find IP to be applied for this subnet.
 387                  */
 388                 subnet = info->value;
 389                 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR);
 390                 if (nla) {
 391                         info = nla_data(nla);
 392                         ip = info->value;
 393                 }
 394                 ret = beiscsi_if_en_static(phba, BE2_IPV4, ip, subnet);
 395                 break;
 396         }
 397
 398         return ret;
 399 }
 400
 401 static int
 402 beiscsi_iface_config_ipv6(struct Scsi_Host *shost,
 403                           struct iscsi_iface_param_info *iface_param,
 404                           void *data, uint32_t dt_len)
 405 {
 406         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 407         int ret = -EPERM;
 408
 409         switch (iface_param->param) {
 410         case ISCSI_NET_PARAM_IFACE_ENABLE:
 411                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 412                         ret = beiscsi_create_ipv6_iface(phba);
 413                 else {
 414                         iscsi_destroy_iface(phba->ipv6_iface);
 415                         phba->ipv6_iface = NULL;
 416                 }
 417                 break;
 418         case ISCSI_NET_PARAM_IPV6_ADDR:
 419                 ret = beiscsi_if_en_static(phba, BE2_IPV6,
 420                                            iface_param->value, NULL);
 421                 break;
 422         }
 423
 424         return ret;
 425 }
 426
 427 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 428                 void *data, uint32_t dt_len)
 429 {
 430         struct iscsi_iface_param_info *iface_param = NULL;
 431         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 432         struct nlattr *attrib;
 433         uint32_t rm_len = dt_len;
 434         int ret;
 435
 436         if (phba->state & BE_ADAPTER_PCI_ERR) {
 437                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 438                             "BS_%d : In PCI_ERROR Recovery\n");
 439                 return -EBUSY;
 440         }
 441
 442         /* update interface_handle */
 443         ret = beiscsi_if_get_handle(phba);
 444         if (ret) {
 445                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 446                             "BS_%d : Getting Interface Handle Failed\n");
 447                 return ret;
 448         }
 449
 450         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 451                 iface_param = nla_data(attrib);
 452
 453                 if (iface_param->param_type != ISCSI_NET_PARAM)
 454                         continue;
 455
 456                 /*
 457                  * BE2ISCSI only supports 1 interface
 458                  */
 459                 if (iface_param->iface_num) {
 460                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 461                                     "BS_%d : Invalid iface_num %d."
 462                                     "Only iface_num 0 is supported.\n",
 463                                     iface_param->iface_num);
 464
 465                         return -EINVAL;
 466                 }
 467
 468                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 469                             "BS_%d : %s.0 set param %d",
 470                             (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ?
 471                             "ipv4" : "ipv6", iface_param->param);
 472
 473                 ret = -EPERM;
 474                 switch (iface_param->param) {
 475                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 476                 case ISCSI_NET_PARAM_VLAN_TAG:
 477                         ret = beiscsi_iface_config_vlan(shost, iface_param);
 478                         break;
 479                 default:
 480                         switch (iface_param->iface_type) {
 481                         case ISCSI_IFACE_TYPE_IPV4:
 482                                 ret = beiscsi_iface_config_ipv4(shost,
 483                                                                 iface_param,
 484                                                                 data, dt_len);
 485                                 break;
 486                         case ISCSI_IFACE_TYPE_IPV6:
 487                                 ret = beiscsi_iface_config_ipv6(shost,
 488                                                                 iface_param,
 489                                                                 data, dt_len);
 490                                 break;
 491                         }
 492                 }
 493
 494                 if (ret == -EPERM) {
 495                         __beiscsi_log(phba, KERN_ERR,
 496                                       "BS_%d : %s.0 set param %d not permitted",
 497                                       (iface_param->iface_type ==
 498                                        ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6",
 499                                       iface_param->param);
 500                         ret = 0;
 501                 }
 502                 if (ret)
 503                         break;
 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         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 517                 ip_type = BE2_IPV6;
 518
 519         len = mgmt_get_if_info(phba, ip_type, &if_info);
 520         if (len)
 521                 return len;
 522
 523         switch (param) {
 524         case ISCSI_NET_PARAM_IPV4_ADDR:
 525                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
 526                 break;
 527         case ISCSI_NET_PARAM_IPV6_ADDR:
 528                 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
 529                 break;
 530         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 531                 if (!if_info->dhcp_state)
 532                         len = sprintf(buf, "static\n");
 533                 else
 534                         len = sprintf(buf, "dhcp\n");
 535                 break;
 536         case ISCSI_NET_PARAM_IPV4_SUBNET:
 537                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
 538                 break;
 539         case ISCSI_NET_PARAM_VLAN_ENABLED:
 540                 len = sprintf(buf, "%s\n",
 541                               (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ?
 542                               "disable" : "enable");
 543                 break;
 544         case ISCSI_NET_PARAM_VLAN_ID:
 545                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 546                         len = -EINVAL;
 547                 else
 548                         len = sprintf(buf, "%d\n",
 549                                       (if_info->vlan_priority &
 550                                        ISCSI_MAX_VLAN_ID));
 551                 break;
 552         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 553                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 554                         len = -EINVAL;
 555                 else
 556                         len = sprintf(buf, "%d\n",
 557                                       ((if_info->vlan_priority >> 13) &
 558                                        ISCSI_MAX_VLAN_PRIORITY));
 559                 break;
 560         default:
 561                 WARN_ON(1);
 562         }
 563
 564         kfree(if_info);
 565         return len;
 566 }
 567
 568 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 569                 enum iscsi_param_type param_type,
 570                 int param, char *buf)
 571 {
 572         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 573         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 574         struct be_cmd_get_def_gateway_resp gateway;
 575         int len = -EPERM;
 576
 577         if (phba->state & BE_ADAPTER_PCI_ERR) {
 578                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 579                             "BS_%d : In PCI_ERROR Recovery\n");
 580                 return -EBUSY;
 581         }
 582
 583         switch (param) {
 584         case ISCSI_NET_PARAM_IPV4_ADDR:
 585         case ISCSI_NET_PARAM_IPV4_SUBNET:
 586         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 587         case ISCSI_NET_PARAM_IPV6_ADDR:
 588         case ISCSI_NET_PARAM_VLAN_ENABLED:
 589         case ISCSI_NET_PARAM_VLAN_ID:
 590         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 591                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 592                 break;
 593         case ISCSI_NET_PARAM_IFACE_ENABLE:
 594                 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
 595                         len = sprintf(buf, "%s\n",
 596                                       phba->ipv4_iface ? "enable" : "disable");
 597                 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 598                         len = sprintf(buf, "%s\n",
 599                                       phba->ipv6_iface ? "enable" : "disable");
 600                 break;
 601         case ISCSI_NET_PARAM_IPV4_GW:
 602                 memset(&gateway, 0, sizeof(gateway));
 603                 len = beiscsi_if_get_gw(phba, BE2_IPV4, &gateway);
 604                 if (!len)
 605                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 606                 break;
 607         }
 608
 609         return len;
 610 }
 611
 612 /**
 613  * beiscsi_ep_get_param - get the iscsi parameter
 614  * @ep: pointer to iscsi ep
 615  * @param: parameter type identifier
 616  * @buf: buffer pointer
 617  *
 618  * returns iscsi parameter
 619  */
 620 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 621                            enum iscsi_param param, char *buf)
 622 {
 623         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 624         int len;
 625
 626         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 627                     BEISCSI_LOG_CONFIG,
 628                     "BS_%d : In beiscsi_ep_get_param,"
 629                     " param= %d\n", param);
 630
 631         switch (param) {
 632         case ISCSI_PARAM_CONN_PORT:
 633                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 634                 break;
 635         case ISCSI_PARAM_CONN_ADDRESS:
 636                 if (beiscsi_ep->ip_type == BE2_IPV4)
 637                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 638                 else
 639                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 640                 break;
 641         default:
 642                 len = -EPERM;
 643         }
 644         return len;
 645 }
 646
 647 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 648                       enum iscsi_param param, char *buf, int buflen)
 649 {
 650         struct iscsi_conn *conn = cls_conn->dd_data;
 651         struct iscsi_session *session = conn->session;
 652         struct beiscsi_hba *phba = NULL;
 653         int ret;
 654
 655         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 656         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 657                     "BS_%d : In beiscsi_conn_set_param,"
 658                     " param= %d\n", param);
 659
 660         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 661         if (ret)
 662                 return ret;
 663         /*
 664          * If userspace tried to set the value to higher than we can
 665          * support override here.
 666          */
 667         switch (param) {
 668         case ISCSI_PARAM_FIRST_BURST:
 669                 if (session->first_burst > 8192)
 670                         session->first_burst = 8192;
 671                 break;
 672         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 673                 if (conn->max_recv_dlength > 65536)
 674                         conn->max_recv_dlength = 65536;
 675                 break;
 676         case ISCSI_PARAM_MAX_BURST:
 677                 if (session->max_burst > 262144)
 678                         session->max_burst = 262144;
 679                 break;
 680         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 681                 if (conn->max_xmit_dlength > 65536)
 682                         conn->max_xmit_dlength = 65536;
 683         default:
 684                 return 0;
 685         }
 686
 687         return 0;
 688 }
 689
 690 /**
 691  * beiscsi_get_initname - Read Initiator Name from flash
 692  * @buf: buffer bointer
 693  * @phba: The device priv structure instance
 694  *
 695  * returns number of bytes
 696  */
 697 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 698 {
 699         int rc;
 700         unsigned int tag;
 701         struct be_mcc_wrb *wrb;
 702         struct be_cmd_hba_name *resp;
 703
 704         tag = be_cmd_get_initname(phba);
 705         if (!tag) {
 706                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 707                             "BS_%d : Getting Initiator Name Failed\n");
 708
 709                 return -EBUSY;
 710         }
 711
 712         rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL);
 713         if (rc) {
 714                 beiscsi_log(phba, KERN_ERR,
 715                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 716                             "BS_%d : Initiator Name MBX Failed\n");
 717                 return rc;
 718         }
 719
 720         resp = embedded_payload(wrb);
 721         rc = sprintf(buf, "%s\n", resp->initiator_name);
 722         return rc;
 723 }
 724
 725 /**
 726  * beiscsi_get_port_state - Get the Port State
 727  * @shost : pointer to scsi_host structure
 728  *
 729  */
 730 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 731 {
 732         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 733         struct iscsi_cls_host *ihost = shost->shost_data;
 734
 735         ihost->port_state = (phba->state & BE_ADAPTER_LINK_UP) ?
 736                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 737 }
 738
 739 /**
 740  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 741  * @shost : pointer to scsi_host structure
 742  *
 743  */
 744 static void beiscsi_get_port_speed(struct Scsi_Host *shost)
 745 {
 746         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 747         struct iscsi_cls_host *ihost = shost->shost_data;
 748
 749         switch (phba->port_speed) {
 750         case BE2ISCSI_LINK_SPEED_10MBPS:
 751                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 752                 break;
 753         case BE2ISCSI_LINK_SPEED_100MBPS:
 754                 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
 755                 break;
 756         case BE2ISCSI_LINK_SPEED_1GBPS:
 757                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 758                 break;
 759         case BE2ISCSI_LINK_SPEED_10GBPS:
 760                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 761                 break;
 762         case BE2ISCSI_LINK_SPEED_25GBPS:
 763                 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS;
 764                 break;
 765         case BE2ISCSI_LINK_SPEED_40GBPS:
 766                 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS;
 767                 break;
 768         default:
 769                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 770         }
 771 }
 772
 773 /**
 774  * beiscsi_get_host_param - get the iscsi parameter
 775  * @shost: pointer to scsi_host structure
 776  * @param: parameter type identifier
 777  * @buf: buffer pointer
 778  *
 779  * returns host parameter
 780  */
 781 int beiscsi_get_host_param(struct Scsi_Host *shost,
 782                            enum iscsi_host_param param, char *buf)
 783 {
 784         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 785         int status = 0;
 786
 787
 788         if (phba->state & BE_ADAPTER_PCI_ERR) {
 789                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 790                             "BS_%d : In PCI_ERROR Recovery\n");
 791                 return -EBUSY;
 792         } else {
 793                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 794                             "BS_%d : In beiscsi_get_host_param,"
 795                             " param = %d\n", param);
 796         }
 797
 798         switch (param) {
 799         case ISCSI_HOST_PARAM_HWADDRESS:
 800                 status = beiscsi_get_macaddr(buf, phba);
 801                 if (status < 0) {
 802                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 803                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 804                         return status;
 805                 }
 806                 break;
 807         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 808                 status = beiscsi_get_initname(buf, phba);
 809                 if (status < 0) {
 810                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 811                                     "BS_%d : Retreiving Initiator Name Failed\n");
 812                         return status;
 813                 }
 814                 break;
 815         case ISCSI_HOST_PARAM_PORT_STATE:
 816                 beiscsi_get_port_state(shost);
 817                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 818                 break;
 819         case ISCSI_HOST_PARAM_PORT_SPEED:
 820                 beiscsi_get_port_speed(shost);
 821                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 822                 break;
 823         default:
 824                 return iscsi_host_get_param(shost, param, buf);
 825         }
 826         return status;
 827 }
 828
 829 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 830 {
 831         struct be_cmd_get_nic_conf_resp resp;
 832         int rc;
 833
 834         if (phba->mac_addr_set)
 835                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 836
 837         memset(&resp, 0, sizeof(resp));
 838         rc = mgmt_get_nic_conf(phba, &resp);
 839         if (rc)
 840                 return rc;
 841
 842         phba->mac_addr_set = true;
 843         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 844         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 845 }
 846
 847 /**
 848  * beiscsi_conn_get_stats - get the iscsi stats
 849  * @cls_conn: pointer to iscsi cls conn
 850  * @stats: pointer to iscsi_stats structure
 851  *
 852  * returns iscsi stats
 853  */
 854 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 855                             struct iscsi_stats *stats)
 856 {
 857         struct iscsi_conn *conn = cls_conn->dd_data;
 858         struct beiscsi_hba *phba = NULL;
 859
 860         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 861         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 862                     "BS_%d : In beiscsi_conn_get_stats\n");
 863
 864         stats->txdata_octets = conn->txdata_octets;
 865         stats->rxdata_octets = conn->rxdata_octets;
 866         stats->dataout_pdus = conn->dataout_pdus_cnt;
 867         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 868         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 869         stats->datain_pdus = conn->datain_pdus_cnt;
 870         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 871         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 872         stats->r2t_pdus = conn->r2t_pdus_cnt;
 873         stats->digest_err = 0;
 874         stats->timeout_err = 0;
 875         stats->custom_length = 1;
 876         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 877         stats->custom[0].value = conn->eh_abort_cnt;
 878 }
 879
 880 /**
 881  * beiscsi_set_params_for_offld - get the parameters for offload
 882  * @beiscsi_conn: pointer to beiscsi_conn
 883  * @params: pointer to offload_params structure
 884  */
 885 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 886                                           struct beiscsi_offload_params *params)
 887 {
 888         struct iscsi_conn *conn = beiscsi_conn->conn;
 889         struct iscsi_session *session = conn->session;
 890
 891         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 892                       params, session->max_burst);
 893         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 894                       max_send_data_segment_length, params,
 895                       conn->max_xmit_dlength);
 896         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 897                       params, session->first_burst);
 898         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 899                       session->erl);
 900         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 901                       conn->datadgst_en);
 902         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 903                       conn->hdrdgst_en);
 904         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 905                       session->initial_r2t_en);
 906         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 907                       session->imm_data_en);
 908         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 909                       data_seq_inorder, params,
 910                       session->dataseq_inorder_en);
 911         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 912                       pdu_seq_inorder, params,
 913                       session->pdu_inorder_en);
 914         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
 915                       session->max_r2t);
 916         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 917                       (conn->exp_statsn - 1));
 918         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 919                       max_recv_data_segment_length, params,
 920                       conn->max_recv_dlength);
 921
 922 }
 923
 924 /**
 925  * beiscsi_conn_start - offload of session to chip
 926  * @cls_conn: pointer to beiscsi_conn
 927  */
 928 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 929 {
 930         struct iscsi_conn *conn = cls_conn->dd_data;
 931         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 932         struct beiscsi_endpoint *beiscsi_ep;
 933         struct beiscsi_offload_params params;
 934         struct beiscsi_hba *phba;
 935
 936         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 937
 938         if (phba->state & BE_ADAPTER_PCI_ERR) {
 939                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 940                             "BS_%d : In PCI_ERROR Recovery\n");
 941                 return -EBUSY;
 942         } else {
 943                 beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 944                             BEISCSI_LOG_CONFIG,
 945                             "BS_%d : In beiscsi_conn_start\n");
 946         }
 947
 948         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 949         beiscsi_ep = beiscsi_conn->ep;
 950         if (!beiscsi_ep)
 951                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 952                             BEISCSI_LOG_CONFIG,
 953                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 954
 955         beiscsi_conn->login_in_progress = 0;
 956         beiscsi_set_params_for_offld(beiscsi_conn, &params);
 957         beiscsi_offload_connection(beiscsi_conn, &params);
 958         iscsi_conn_start(cls_conn);
 959         return 0;
 960 }
 961
 962 /**
 963  * beiscsi_get_cid - Allocate a cid
 964  * @phba: The phba instance
 965  */
 966 static int beiscsi_get_cid(struct beiscsi_hba *phba)
 967 {
 968         unsigned short cid = 0xFFFF, cid_from_ulp;
 969         struct ulp_cid_info *cid_info = NULL;
 970         uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
 971
 972         /* Find the ULP which has more CID available */
 973         cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
 974                           BEISCSI_ULP0_AVLBL_CID(phba) : 0;
 975         cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
 976                           BEISCSI_ULP1_AVLBL_CID(phba) : 0;
 977         cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
 978                         BEISCSI_ULP0 : BEISCSI_ULP1;
 979
 980         if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {
 981                 cid_info = phba->cid_array_info[cid_from_ulp];
 982                 if (!cid_info->avlbl_cids)
 983                         return cid;
 984
 985                 cid = cid_info->cid_array[cid_info->cid_alloc++];
 986
 987                 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(
 988                                            phba, cid_from_ulp))
 989                         cid_info->cid_alloc = 0;
 990
 991                 cid_info->avlbl_cids--;
 992         }
 993         return cid;
 994 }
 995
 996 /**
 997  * beiscsi_put_cid - Free the cid
 998  * @phba: The phba for which the cid is being freed
 999  * @cid: The cid to free
1000  */
1001 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1002 {
1003         uint16_t cid_post_ulp;
1004         struct hwi_controller *phwi_ctrlr;
1005         struct hwi_wrb_context *pwrb_context;
1006         struct ulp_cid_info *cid_info = NULL;
1007         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1008
1009         phwi_ctrlr = phba->phwi_ctrlr;
1010         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1011         cid_post_ulp = pwrb_context->ulp_num;
1012
1013         cid_info = phba->cid_array_info[cid_post_ulp];
1014         cid_info->avlbl_cids++;
1015
1016         cid_info->cid_array[cid_info->cid_free++] = cid;
1017         if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1018                 cid_info->cid_free = 0;
1019 }
1020
1021 /**
1022  * beiscsi_free_ep - free endpoint
1023  * @ep: pointer to iscsi endpoint structure
1024  */
1025 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1026 {
1027         struct beiscsi_hba *phba = beiscsi_ep->phba;
1028         struct beiscsi_conn *beiscsi_conn;
1029
1030         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1031         beiscsi_ep->phba = NULL;
1032         phba->ep_array[BE_GET_CRI_FROM_CID
1033                        (beiscsi_ep->ep_cid)] = NULL;
1034
1035         /**
1036          * Check if any connection resource allocated by driver
1037          * is to be freed.This case occurs when target redirection
1038          * or connection retry is done.
1039          **/
1040         if (!beiscsi_ep->conn)
1041                 return;
1042
1043         beiscsi_conn = beiscsi_ep->conn;
1044         if (beiscsi_conn->login_in_progress) {
1045                 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1046                                                beiscsi_conn->task);
1047                 beiscsi_conn->login_in_progress = 0;
1048         }
1049 }
1050
1051 /**
1052  * beiscsi_open_conn - Ask FW to open a TCP connection
1053  * @ep: endpoint to be used
1054  * @src_addr: The source IP address
1055  * @dst_addr: The Destination  IP address
1056  *
1057  * Asks the FW to open a TCP connection
1058  */
1059 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1060                              struct sockaddr *src_addr,
1061                              struct sockaddr *dst_addr, int non_blocking)
1062 {
1063         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1064         struct beiscsi_hba *phba = beiscsi_ep->phba;
1065         struct tcp_connect_and_offload_out *ptcpcnct_out;
1066         struct be_dma_mem nonemb_cmd;
1067         unsigned int tag, req_memsize;
1068         int ret = -ENOMEM;
1069
1070         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1071                     "BS_%d : In beiscsi_open_conn\n");
1072
1073         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1074         if (beiscsi_ep->ep_cid == 0xFFFF) {
1075                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1076                             "BS_%d : No free cid available\n");
1077                 return ret;
1078         }
1079
1080         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1081                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1082                     beiscsi_ep->ep_cid);
1083
1084         phba->ep_array[BE_GET_CRI_FROM_CID
1085                        (beiscsi_ep->ep_cid)] = ep;
1086
1087         beiscsi_ep->cid_vld = 0;
1088
1089         if (is_chip_be2_be3r(phba))
1090                 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1091         else
1092                 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1093
1094         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1095                                 req_memsize,
1096                                 &nonemb_cmd.dma);
1097         if (nonemb_cmd.va == NULL) {
1098
1099                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1100                             "BS_%d : Failed to allocate memory for"
1101                             " mgmt_open_connection\n");
1102
1103                 beiscsi_free_ep(beiscsi_ep);
1104                 return -ENOMEM;
1105         }
1106         nonemb_cmd.size = req_memsize;
1107         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1108         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1109         if (tag <= 0) {
1110                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1111                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1112                             beiscsi_ep->ep_cid);
1113
1114                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1115                                     nonemb_cmd.va, nonemb_cmd.dma);
1116                 beiscsi_free_ep(beiscsi_ep);
1117                 return -EAGAIN;
1118         }
1119
1120         ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd);
1121         if (ret) {
1122                 beiscsi_log(phba, KERN_ERR,
1123                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1124                             "BS_%d : mgmt_open_connection Failed");
1125
1126                 if (ret != -EBUSY)
1127                         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1128                                             nonemb_cmd.va, nonemb_cmd.dma);
1129
1130                 beiscsi_free_ep(beiscsi_ep);
1131                 return ret;
1132         }
1133
1134         ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1135         beiscsi_ep = ep->dd_data;
1136         beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1137         beiscsi_ep->cid_vld = 1;
1138         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1139                     "BS_%d : mgmt_open_connection Success\n");
1140
1141         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1142                             nonemb_cmd.va, nonemb_cmd.dma);
1143         return 0;
1144 }
1145
1146 /**
1147  * beiscsi_ep_connect - Ask chip to create TCP Conn
1148  * @scsi_host: Pointer to scsi_host structure
1149  * @dst_addr: The IP address of Target
1150  * @non_blocking: blocking or non-blocking call
1151  *
1152  * This routines first asks chip to create a connection and then allocates an EP
1153  */
1154 struct iscsi_endpoint *
1155 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1156                    int non_blocking)
1157 {
1158         struct beiscsi_hba *phba;
1159         struct beiscsi_endpoint *beiscsi_ep;
1160         struct iscsi_endpoint *ep;
1161         int ret;
1162
1163         if (shost)
1164                 phba = iscsi_host_priv(shost);
1165         else {
1166                 ret = -ENXIO;
1167                 printk(KERN_ERR
1168                        "beiscsi_ep_connect shost is NULL\n");
1169                 return ERR_PTR(ret);
1170         }
1171
1172         if (beiscsi_error(phba)) {
1173                 ret = -EIO;
1174                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1175                             "BS_%d : The FW state Not Stable!!!\n");
1176                 return ERR_PTR(ret);
1177         }
1178
1179         if (phba->state & BE_ADAPTER_PCI_ERR) {
1180                 ret = -EBUSY;
1181                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1182                             "BS_%d : In PCI_ERROR Recovery\n");
1183                 return ERR_PTR(ret);
1184         } else if (phba->state & BE_ADAPTER_LINK_DOWN) {
1185                 ret = -EBUSY;
1186                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1187                             "BS_%d : The Adapter Port state is Down!!!\n");
1188                 return ERR_PTR(ret);
1189         }
1190
1191         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1192         if (!ep) {
1193                 ret = -ENOMEM;
1194                 return ERR_PTR(ret);
1195         }
1196
1197         beiscsi_ep = ep->dd_data;
1198         beiscsi_ep->phba = phba;
1199         beiscsi_ep->openiscsi_ep = ep;
1200         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1201         if (ret) {
1202                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1203                             "BS_%d : Failed in beiscsi_open_conn\n");
1204                 goto free_ep;
1205         }
1206
1207         return ep;
1208
1209 free_ep:
1210         iscsi_destroy_endpoint(ep);
1211         return ERR_PTR(ret);
1212 }
1213
1214 /**
1215  * beiscsi_ep_poll - Poll to see if connection is established
1216  * @ep: endpoint to be used
1217  * @timeout_ms: timeout specified in millisecs
1218  *
1219  * Poll to see if TCP connection established
1220  */
1221 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1222 {
1223         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1224
1225         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1226                     "BS_%d : In  beiscsi_ep_poll\n");
1227
1228         if (beiscsi_ep->cid_vld == 1)
1229                 return 1;
1230         else
1231                 return 0;
1232 }
1233
1234 /**
1235  * beiscsi_flush_cq()- Flush the CQ created.
1236  * @phba: ptr device priv structure.
1237  *
1238  * Before the connection resource are freed flush
1239  * all the CQ enteries
1240  **/
1241 static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1242 {
1243         uint16_t i;
1244         struct be_eq_obj *pbe_eq;
1245         struct hwi_controller *phwi_ctrlr;
1246         struct hwi_context_memory *phwi_context;
1247
1248         phwi_ctrlr = phba->phwi_ctrlr;
1249         phwi_context = phwi_ctrlr->phwi_ctxt;
1250
1251         for (i = 0; i < phba->num_cpus; i++) {
1252                 pbe_eq = &phwi_context->be_eq[i];
1253                 irq_poll_disable(&pbe_eq->iopoll);
1254                 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC);
1255                 irq_poll_enable(&pbe_eq->iopoll);
1256         }
1257 }
1258
1259 /**
1260  * beiscsi_close_conn - Upload the  connection
1261  * @ep: The iscsi endpoint
1262  * @flag: The type of connection closure
1263  */
1264 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1265 {
1266         int ret = 0;
1267         unsigned int tag;
1268         struct beiscsi_hba *phba = beiscsi_ep->phba;
1269
1270         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1271         if (!tag) {
1272                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1273                             "BS_%d : upload failed for cid 0x%x\n",
1274                             beiscsi_ep->ep_cid);
1275
1276                 ret = -EAGAIN;
1277         }
1278
1279         ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1280
1281         /* Flush the CQ entries */
1282         beiscsi_flush_cq(phba);
1283
1284         return ret;
1285 }
1286
1287 /**
1288  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1289  * @phba: The phba instance
1290  * @cid: The cid to free
1291  */
1292 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1293                                       unsigned int cid)
1294 {
1295         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1296
1297         if (phba->conn_table[cri_index])
1298                 phba->conn_table[cri_index] = NULL;
1299         else {
1300                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1301                             "BS_%d : Connection table Not occupied.\n");
1302                 return -EINVAL;
1303         }
1304         return 0;
1305 }
1306
1307 /**
1308  * beiscsi_ep_disconnect - Tears down the TCP connection
1309  * @ep: endpoint to be used
1310  *
1311  * Tears down the TCP connection
1312  */
1313 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1314 {
1315         struct beiscsi_conn *beiscsi_conn;
1316         struct beiscsi_endpoint *beiscsi_ep;
1317         struct beiscsi_hba *phba;
1318         unsigned int tag;
1319         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1320         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1321
1322         beiscsi_ep = ep->dd_data;
1323         phba = beiscsi_ep->phba;
1324         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1325                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1326                     beiscsi_ep->ep_cid);
1327
1328         if (beiscsi_ep->conn) {
1329                 beiscsi_conn = beiscsi_ep->conn;
1330                 iscsi_suspend_queue(beiscsi_conn->conn);
1331                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1332                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1333         } else {
1334                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1335                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1336         }
1337
1338         if (phba->state & BE_ADAPTER_PCI_ERR) {
1339                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1340                             "BS_%d : PCI_ERROR Recovery\n");
1341                 goto free_ep;
1342         }
1343
1344         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1345                                           beiscsi_ep->ep_cid,
1346                                           mgmt_invalidate_flag,
1347                                           savecfg_flag);
1348         if (!tag) {
1349                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1350                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1351                             beiscsi_ep->ep_cid);
1352         }
1353
1354         beiscsi_mccq_compl_wait(phba, tag, NULL, NULL);
1355         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1356 free_ep:
1357         msleep(BEISCSI_LOGOUT_SYNC_DELAY);
1358         beiscsi_free_ep(beiscsi_ep);
1359         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1360         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1361 }
1362
1363 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1364 {
1365         switch (param_type) {
1366         case ISCSI_NET_PARAM:
1367                 switch (param) {
1368                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1369                 case ISCSI_NET_PARAM_IPV4_ADDR:
1370                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1371                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1372                 case ISCSI_NET_PARAM_IPV4_GW:
1373                 case ISCSI_NET_PARAM_IPV6_ADDR:
1374                 case ISCSI_NET_PARAM_VLAN_ID:
1375                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1376                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1377                         return S_IRUGO;
1378                 default:
1379                         return 0;
1380                 }
1381         case ISCSI_HOST_PARAM:
1382                 switch (param) {
1383                 case ISCSI_HOST_PARAM_HWADDRESS:
1384                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1385                 case ISCSI_HOST_PARAM_PORT_STATE:
1386                 case ISCSI_HOST_PARAM_PORT_SPEED:
1387                         return S_IRUGO;
1388                 default:
1389                         return 0;
1390                 }
1391         case ISCSI_PARAM:
1392                 switch (param) {
1393                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1394                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1395                 case ISCSI_PARAM_HDRDGST_EN:
1396                 case ISCSI_PARAM_DATADGST_EN:
1397                 case ISCSI_PARAM_CONN_ADDRESS:
1398                 case ISCSI_PARAM_CONN_PORT:
1399                 case ISCSI_PARAM_EXP_STATSN:
1400                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1401                 case ISCSI_PARAM_PERSISTENT_PORT:
1402                 case ISCSI_PARAM_PING_TMO:
1403                 case ISCSI_PARAM_RECV_TMO:
1404                 case ISCSI_PARAM_INITIAL_R2T_EN:
1405                 case ISCSI_PARAM_MAX_R2T:
1406                 case ISCSI_PARAM_IMM_DATA_EN:
1407                 case ISCSI_PARAM_FIRST_BURST:
1408                 case ISCSI_PARAM_MAX_BURST:
1409                 case ISCSI_PARAM_PDU_INORDER_EN:
1410                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1411                 case ISCSI_PARAM_ERL:
1412                 case ISCSI_PARAM_TARGET_NAME:
1413                 case ISCSI_PARAM_TPGT:
1414                 case ISCSI_PARAM_USERNAME:
1415                 case ISCSI_PARAM_PASSWORD:
1416                 case ISCSI_PARAM_USERNAME_IN:
1417                 case ISCSI_PARAM_PASSWORD_IN:
1418                 case ISCSI_PARAM_FAST_ABORT:
1419                 case ISCSI_PARAM_ABORT_TMO:
1420                 case ISCSI_PARAM_LU_RESET_TMO:
1421                 case ISCSI_PARAM_IFACE_NAME:
1422                 case ISCSI_PARAM_INITIATOR_NAME:
1423                         return S_IRUGO;
1424                 default:
1425                         return 0;
1426                 }
1427         }
1428
1429         return 0;
1430 }