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