drivers/scsi/be2iscsi/be_iscsi.c

   1 /**
   2  * Copyright (C) 2005 - 2014 Emulex
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Written by: Jayamohan Kallickal (jayamohan.kallickal@emulex.com)
  11  *
  12  * Contact Information:
  13  * linux-drivers@emulex.com
  14  *
  15  * Emulex
  16  * 3333 Susan Street
  17  * Costa Mesa, CA 92626
  18  */
  19
  20 #include <scsi/libiscsi.h>
  21 #include <scsi/scsi_transport_iscsi.h>
  22 #include <scsi/scsi_transport.h>
  23 #include <scsi/scsi_cmnd.h>
  24 #include <scsi/scsi_device.h>
  25 #include <scsi/scsi_host.h>
  26 #include <scsi/scsi_netlink.h>
  27 #include <net/netlink.h>
  28 #include <scsi/scsi.h>
  29
  30 #include "be_iscsi.h"
  31
  32 extern struct iscsi_transport beiscsi_iscsi_transport;
  33
  34 /**
  35  * beiscsi_session_create - creates a new iscsi session
  36  * @cmds_max: max commands supported
  37  * @qdepth: max queue depth supported
  38  * @initial_cmdsn: initial iscsi CMDSN
  39  */
  40 struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep,
  41                                                  u16 cmds_max,
  42                                                  u16 qdepth,
  43                                                  u32 initial_cmdsn)
  44 {
  45         struct Scsi_Host *shost;
  46         struct beiscsi_endpoint *beiscsi_ep;
  47         struct iscsi_cls_session *cls_session;
  48         struct beiscsi_hba *phba;
  49         struct iscsi_session *sess;
  50         struct beiscsi_session *beiscsi_sess;
  51         struct beiscsi_io_task *io_task;
  52
  53
  54         if (!ep) {
  55                 printk(KERN_ERR
  56                        "beiscsi_session_create: invalid ep\n");
  57                 return NULL;
  58         }
  59         beiscsi_ep = ep->dd_data;
  60         phba = beiscsi_ep->phba;
  61
  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 = 0;
 371
 372         /* Get the Interface Handle */
 373         if (mgmt_get_all_if_id(phba)) {
 374                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 375                             "BS_%d : Getting Interface Handle Failed\n");
 376                 return -EIO;
 377         }
 378
 379         switch (iface_param->param) {
 380         case ISCSI_NET_PARAM_VLAN_ENABLED:
 381                 if (iface_param->value[0] != ISCSI_VLAN_ENABLE)
 382                         ret = mgmt_set_vlan(phba, BEISCSI_VLAN_DISABLE);
 383                 break;
 384         case ISCSI_NET_PARAM_VLAN_TAG:
 385                 ret = mgmt_set_vlan(phba,
 386                                     *((uint16_t *)iface_param->value));
 387                 break;
 388         default:
 389                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
 390                             "BS_%d : Unknown Param Type : %d\n",
 391                             iface_param->param);
 392                 return -ENOSYS;
 393         }
 394         return ret;
 395 }
 396
 397
 398 static int
 399 beiscsi_set_ipv4(struct Scsi_Host *shost,
 400                 struct iscsi_iface_param_info *iface_param,
 401                 void *data, uint32_t dt_len)
 402 {
 403         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 404         int ret = 0;
 405
 406         /* Check the param */
 407         switch (iface_param->param) {
 408         case ISCSI_NET_PARAM_IPV4_GW:
 409                 ret = mgmt_set_gateway(phba, iface_param);
 410                 break;
 411         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 412                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
 413                         ret = mgmt_set_ip(phba, iface_param,
 414                                         NULL, ISCSI_BOOTPROTO_DHCP);
 415                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
 416                         ret = beiscsi_set_static_ip(shost, iface_param,
 417                                                     data, dt_len);
 418                 else
 419                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 420                                     "BS_%d : Invalid BOOTPROTO: %d\n",
 421                                     iface_param->value[0]);
 422                 break;
 423         case ISCSI_NET_PARAM_IFACE_ENABLE:
 424                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 425                         ret = beiscsi_create_ipv4_iface(phba);
 426                 else
 427                         iscsi_destroy_iface(phba->ipv4_iface);
 428                 break;
 429         case ISCSI_NET_PARAM_IPV4_SUBNET:
 430         case ISCSI_NET_PARAM_IPV4_ADDR:
 431                 ret = beiscsi_set_static_ip(shost, iface_param,
 432                                             data, dt_len);
 433                 break;
 434         case ISCSI_NET_PARAM_VLAN_ENABLED:
 435         case ISCSI_NET_PARAM_VLAN_TAG:
 436                 ret = beiscsi_set_vlan_tag(shost, iface_param);
 437                 break;
 438         default:
 439                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 440                             "BS_%d : Param %d not supported\n",
 441                             iface_param->param);
 442         }
 443
 444         return ret;
 445 }
 446
 447 static int
 448 beiscsi_set_ipv6(struct Scsi_Host *shost,
 449                 struct iscsi_iface_param_info *iface_param,
 450                 void *data, uint32_t dt_len)
 451 {
 452         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 453         int ret = 0;
 454
 455         switch (iface_param->param) {
 456         case ISCSI_NET_PARAM_IFACE_ENABLE:
 457                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE)
 458                         ret = beiscsi_create_ipv6_iface(phba);
 459                 else {
 460                         iscsi_destroy_iface(phba->ipv6_iface);
 461                         ret = 0;
 462                 }
 463                 break;
 464         case ISCSI_NET_PARAM_IPV6_ADDR:
 465                 ret = mgmt_set_ip(phba, iface_param, NULL,
 466                                   ISCSI_BOOTPROTO_STATIC);
 467                 break;
 468         default:
 469                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 470                             "BS_%d : Param %d not supported\n",
 471                             iface_param->param);
 472         }
 473
 474         return ret;
 475 }
 476
 477 int be2iscsi_iface_set_param(struct Scsi_Host *shost,
 478                 void *data, uint32_t dt_len)
 479 {
 480         struct iscsi_iface_param_info *iface_param = NULL;
 481         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 482         struct nlattr *attrib;
 483         uint32_t rm_len = dt_len;
 484         int ret = 0 ;
 485
 486         if (phba->state & BE_ADAPTER_PCI_ERR) {
 487                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 488                             "BS_%d : In PCI_ERROR Recovery\n");
 489                 return -EBUSY;
 490         }
 491
 492         nla_for_each_attr(attrib, data, dt_len, rm_len) {
 493                 iface_param = nla_data(attrib);
 494
 495                 if (iface_param->param_type != ISCSI_NET_PARAM)
 496                         continue;
 497
 498                 /*
 499                  * BE2ISCSI only supports 1 interface
 500                  */
 501                 if (iface_param->iface_num) {
 502                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 503                                     "BS_%d : Invalid iface_num %d."
 504                                     "Only iface_num 0 is supported.\n",
 505                                     iface_param->iface_num);
 506
 507                         return -EINVAL;
 508                 }
 509
 510                 switch (iface_param->iface_type) {
 511                 case ISCSI_IFACE_TYPE_IPV4:
 512                         ret = beiscsi_set_ipv4(shost, iface_param,
 513                                                data, dt_len);
 514                         break;
 515                 case ISCSI_IFACE_TYPE_IPV6:
 516                         ret = beiscsi_set_ipv6(shost, iface_param,
 517                                                data, dt_len);
 518                         break;
 519                 default:
 520                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 521                                     "BS_%d : Invalid iface type :%d passed\n",
 522                                     iface_param->iface_type);
 523                         break;
 524                 }
 525
 526                 if (ret)
 527                         return ret;
 528         }
 529
 530         return ret;
 531 }
 532
 533 static int be2iscsi_get_if_param(struct beiscsi_hba *phba,
 534                 struct iscsi_iface *iface, int param,
 535                 char *buf)
 536 {
 537         struct be_cmd_get_if_info_resp *if_info;
 538         int len, ip_type = BE2_IPV4;
 539
 540         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6)
 541                 ip_type = BE2_IPV6;
 542
 543         len = mgmt_get_if_info(phba, ip_type, &if_info);
 544         if (len)
 545                 return len;
 546
 547         switch (param) {
 548         case ISCSI_NET_PARAM_IPV4_ADDR:
 549                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr);
 550                 break;
 551         case ISCSI_NET_PARAM_IPV6_ADDR:
 552                 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr);
 553                 break;
 554         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 555                 if (!if_info->dhcp_state)
 556                         len = sprintf(buf, "static\n");
 557                 else
 558                         len = sprintf(buf, "dhcp\n");
 559                 break;
 560         case ISCSI_NET_PARAM_IPV4_SUBNET:
 561                 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask);
 562                 break;
 563         case ISCSI_NET_PARAM_VLAN_ENABLED:
 564                 len = sprintf(buf, "%s\n",
 565                              (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 566                              ? "Disabled\n" : "Enabled\n");
 567                 break;
 568         case ISCSI_NET_PARAM_VLAN_ID:
 569                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 570                         len = -EINVAL;
 571                 else
 572                         len = sprintf(buf, "%d\n",
 573                                      (if_info->vlan_priority &
 574                                      ISCSI_MAX_VLAN_ID));
 575                 break;
 576         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 577                 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE)
 578                         len = -EINVAL;
 579                 else
 580                         len = sprintf(buf, "%d\n",
 581                                      ((if_info->vlan_priority >> 13) &
 582                                      ISCSI_MAX_VLAN_PRIORITY));
 583                 break;
 584         default:
 585                 WARN_ON(1);
 586         }
 587
 588         kfree(if_info);
 589         return len;
 590 }
 591
 592 int be2iscsi_iface_get_param(struct iscsi_iface *iface,
 593                 enum iscsi_param_type param_type,
 594                 int param, char *buf)
 595 {
 596         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
 597         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 598         struct be_cmd_get_def_gateway_resp gateway;
 599         int len = -ENOSYS;
 600
 601         if (phba->state & BE_ADAPTER_PCI_ERR) {
 602                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 603                             "BS_%d : In PCI_ERROR Recovery\n");
 604                 return -EBUSY;
 605         }
 606
 607         switch (param) {
 608         case ISCSI_NET_PARAM_IPV4_ADDR:
 609         case ISCSI_NET_PARAM_IPV4_SUBNET:
 610         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 611         case ISCSI_NET_PARAM_IPV6_ADDR:
 612         case ISCSI_NET_PARAM_VLAN_ENABLED:
 613         case ISCSI_NET_PARAM_VLAN_ID:
 614         case ISCSI_NET_PARAM_VLAN_PRIORITY:
 615                 len = be2iscsi_get_if_param(phba, iface, param, buf);
 616                 break;
 617         case ISCSI_NET_PARAM_IFACE_ENABLE:
 618                 len = sprintf(buf, "enabled\n");
 619                 break;
 620         case ISCSI_NET_PARAM_IPV4_GW:
 621                 memset(&gateway, 0, sizeof(gateway));
 622                 len = mgmt_get_gateway(phba, BE2_IPV4, &gateway);
 623                 if (!len)
 624                         len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr);
 625                 break;
 626         default:
 627                 len = -ENOSYS;
 628         }
 629
 630         return len;
 631 }
 632
 633 /**
 634  * beiscsi_ep_get_param - get the iscsi parameter
 635  * @ep: pointer to iscsi ep
 636  * @param: parameter type identifier
 637  * @buf: buffer pointer
 638  *
 639  * returns iscsi parameter
 640  */
 641 int beiscsi_ep_get_param(struct iscsi_endpoint *ep,
 642                            enum iscsi_param param, char *buf)
 643 {
 644         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
 645         int len = 0;
 646
 647         beiscsi_log(beiscsi_ep->phba, KERN_INFO,
 648                     BEISCSI_LOG_CONFIG,
 649                     "BS_%d : In beiscsi_ep_get_param,"
 650                     " param= %d\n", param);
 651
 652         switch (param) {
 653         case ISCSI_PARAM_CONN_PORT:
 654                 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport);
 655                 break;
 656         case ISCSI_PARAM_CONN_ADDRESS:
 657                 if (beiscsi_ep->ip_type == BE2_IPV4)
 658                         len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr);
 659                 else
 660                         len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr);
 661                 break;
 662         default:
 663                 return -ENOSYS;
 664         }
 665         return len;
 666 }
 667
 668 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn,
 669                       enum iscsi_param param, char *buf, int buflen)
 670 {
 671         struct iscsi_conn *conn = cls_conn->dd_data;
 672         struct iscsi_session *session = conn->session;
 673         struct beiscsi_hba *phba = NULL;
 674         int ret;
 675
 676         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 677         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 678                     "BS_%d : In beiscsi_conn_set_param,"
 679                     " param= %d\n", param);
 680
 681         ret = iscsi_set_param(cls_conn, param, buf, buflen);
 682         if (ret)
 683                 return ret;
 684         /*
 685          * If userspace tried to set the value to higher than we can
 686          * support override here.
 687          */
 688         switch (param) {
 689         case ISCSI_PARAM_FIRST_BURST:
 690                 if (session->first_burst > 8192)
 691                         session->first_burst = 8192;
 692                 break;
 693         case ISCSI_PARAM_MAX_RECV_DLENGTH:
 694                 if (conn->max_recv_dlength > 65536)
 695                         conn->max_recv_dlength = 65536;
 696                 break;
 697         case ISCSI_PARAM_MAX_BURST:
 698                 if (session->max_burst > 262144)
 699                         session->max_burst = 262144;
 700                 break;
 701         case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 702                 if (conn->max_xmit_dlength > 65536)
 703                         conn->max_xmit_dlength = 65536;
 704         default:
 705                 return 0;
 706         }
 707
 708         return 0;
 709 }
 710
 711 /**
 712  * beiscsi_get_initname - Read Initiator Name from flash
 713  * @buf: buffer bointer
 714  * @phba: The device priv structure instance
 715  *
 716  * returns number of bytes
 717  */
 718 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba)
 719 {
 720         int rc;
 721         unsigned int tag;
 722         struct be_mcc_wrb *wrb;
 723         struct be_cmd_hba_name *resp;
 724
 725         tag = be_cmd_get_initname(phba);
 726         if (!tag) {
 727                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 728                             "BS_%d : Getting Initiator Name Failed\n");
 729
 730                 return -EBUSY;
 731         }
 732
 733         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 734         if (rc) {
 735                 beiscsi_log(phba, KERN_ERR,
 736                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 737                             "BS_%d : Initiator Name MBX Failed\n");
 738                 return rc;
 739         }
 740
 741         resp = embedded_payload(wrb);
 742         rc = sprintf(buf, "%s\n", resp->initiator_name);
 743         return rc;
 744 }
 745
 746 /**
 747  * beiscsi_get_port_state - Get the Port State
 748  * @shost : pointer to scsi_host structure
 749  *
 750  */
 751 static void beiscsi_get_port_state(struct Scsi_Host *shost)
 752 {
 753         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 754         struct iscsi_cls_host *ihost = shost->shost_data;
 755
 756         ihost->port_state = (phba->state == BE_ADAPTER_LINK_UP) ?
 757                 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN;
 758 }
 759
 760 /**
 761  * beiscsi_get_port_speed  - Get the Port Speed from Adapter
 762  * @shost : pointer to scsi_host structure
 763  *
 764  * returns Success/Failure
 765  */
 766 static int beiscsi_get_port_speed(struct Scsi_Host *shost)
 767 {
 768         int rc;
 769         unsigned int tag;
 770         struct be_mcc_wrb *wrb;
 771         struct be_cmd_ntwk_link_status_resp *resp;
 772         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 773         struct iscsi_cls_host *ihost = shost->shost_data;
 774
 775         tag = be_cmd_get_port_speed(phba);
 776         if (!tag) {
 777                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 778                             "BS_%d : Getting Port Speed Failed\n");
 779
 780                  return -EBUSY;
 781         }
 782         rc = beiscsi_mccq_compl(phba, tag, &wrb, NULL);
 783         if (rc) {
 784                 beiscsi_log(phba, KERN_ERR,
 785                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
 786                             "BS_%d : Port Speed MBX Failed\n");
 787                 return rc;
 788         }
 789         resp = embedded_payload(wrb);
 790
 791         switch (resp->mac_speed) {
 792         case BE2ISCSI_LINK_SPEED_10MBPS:
 793                 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS;
 794                 break;
 795         case BE2ISCSI_LINK_SPEED_100MBPS:
 796                 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS;
 797                 break;
 798         case BE2ISCSI_LINK_SPEED_1GBPS:
 799                 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS;
 800                 break;
 801         case BE2ISCSI_LINK_SPEED_10GBPS:
 802                 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS;
 803                 break;
 804         default:
 805                 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN;
 806         }
 807         return 0;
 808 }
 809
 810 /**
 811  * beiscsi_get_host_param - get the iscsi parameter
 812  * @shost: pointer to scsi_host structure
 813  * @param: parameter type identifier
 814  * @buf: buffer pointer
 815  *
 816  * returns host parameter
 817  */
 818 int beiscsi_get_host_param(struct Scsi_Host *shost,
 819                            enum iscsi_host_param param, char *buf)
 820 {
 821         struct beiscsi_hba *phba = iscsi_host_priv(shost);
 822         int status = 0;
 823
 824
 825         if (phba->state & BE_ADAPTER_PCI_ERR) {
 826                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 827                             "BS_%d : In PCI_ERROR Recovery\n");
 828                 return -EBUSY;
 829         } else {
 830                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 831                             "BS_%d : In beiscsi_get_host_param,"
 832                             " param = %d\n", param);
 833         }
 834
 835         switch (param) {
 836         case ISCSI_HOST_PARAM_HWADDRESS:
 837                 status = beiscsi_get_macaddr(buf, phba);
 838                 if (status < 0) {
 839                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 840                                     "BS_%d : beiscsi_get_macaddr Failed\n");
 841                         return status;
 842                 }
 843                 break;
 844         case ISCSI_HOST_PARAM_INITIATOR_NAME:
 845                 status = beiscsi_get_initname(buf, phba);
 846                 if (status < 0) {
 847                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 848                                     "BS_%d : Retreiving Initiator Name Failed\n");
 849                         return status;
 850                 }
 851                 break;
 852         case ISCSI_HOST_PARAM_PORT_STATE:
 853                 beiscsi_get_port_state(shost);
 854                 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
 855                 break;
 856         case ISCSI_HOST_PARAM_PORT_SPEED:
 857                 status = beiscsi_get_port_speed(shost);
 858                 if (status) {
 859                         beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 860                                     "BS_%d : Retreiving Port Speed Failed\n");
 861                         return status;
 862                 }
 863                 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
 864                 break;
 865         default:
 866                 return iscsi_host_get_param(shost, param, buf);
 867         }
 868         return status;
 869 }
 870
 871 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba)
 872 {
 873         struct be_cmd_get_nic_conf_resp resp;
 874         int rc;
 875
 876         if (phba->mac_addr_set)
 877                 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 878
 879         memset(&resp, 0, sizeof(resp));
 880         rc = mgmt_get_nic_conf(phba, &resp);
 881         if (rc)
 882                 return rc;
 883
 884         phba->mac_addr_set = true;
 885         memcpy(phba->mac_address, resp.mac_address, ETH_ALEN);
 886         return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN);
 887 }
 888
 889 /**
 890  * beiscsi_conn_get_stats - get the iscsi stats
 891  * @cls_conn: pointer to iscsi cls conn
 892  * @stats: pointer to iscsi_stats structure
 893  *
 894  * returns iscsi stats
 895  */
 896 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 897                             struct iscsi_stats *stats)
 898 {
 899         struct iscsi_conn *conn = cls_conn->dd_data;
 900         struct beiscsi_hba *phba = NULL;
 901
 902         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 903         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
 904                     "BS_%d : In beiscsi_conn_get_stats\n");
 905
 906         stats->txdata_octets = conn->txdata_octets;
 907         stats->rxdata_octets = conn->rxdata_octets;
 908         stats->dataout_pdus = conn->dataout_pdus_cnt;
 909         stats->scsirsp_pdus = conn->scsirsp_pdus_cnt;
 910         stats->scsicmd_pdus = conn->scsicmd_pdus_cnt;
 911         stats->datain_pdus = conn->datain_pdus_cnt;
 912         stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt;
 913         stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt;
 914         stats->r2t_pdus = conn->r2t_pdus_cnt;
 915         stats->digest_err = 0;
 916         stats->timeout_err = 0;
 917         stats->custom_length = 1;
 918         strcpy(stats->custom[0].desc, "eh_abort_cnt");
 919         stats->custom[0].value = conn->eh_abort_cnt;
 920 }
 921
 922 /**
 923  * beiscsi_set_params_for_offld - get the parameters for offload
 924  * @beiscsi_conn: pointer to beiscsi_conn
 925  * @params: pointer to offload_params structure
 926  */
 927 static void  beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn,
 928                                           struct beiscsi_offload_params *params)
 929 {
 930         struct iscsi_conn *conn = beiscsi_conn->conn;
 931         struct iscsi_session *session = conn->session;
 932
 933         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length,
 934                       params, session->max_burst);
 935         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 936                       max_send_data_segment_length, params,
 937                       conn->max_xmit_dlength);
 938         AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length,
 939                       params, session->first_burst);
 940         AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params,
 941                       session->erl);
 942         AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params,
 943                       conn->datadgst_en);
 944         AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params,
 945                       conn->hdrdgst_en);
 946         AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params,
 947                       session->initial_r2t_en);
 948         AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params,
 949                       session->imm_data_en);
 950         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 951                       data_seq_inorder, params,
 952                       session->dataseq_inorder_en);
 953         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 954                       pdu_seq_inorder, params,
 955                       session->pdu_inorder_en);
 956         AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params,
 957                       session->max_r2t);
 958         AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params,
 959                       (conn->exp_statsn - 1));
 960         AMAP_SET_BITS(struct amap_beiscsi_offload_params,
 961                       max_recv_data_segment_length, params,
 962                       conn->max_recv_dlength);
 963
 964 }
 965
 966 /**
 967  * beiscsi_conn_start - offload of session to chip
 968  * @cls_conn: pointer to beiscsi_conn
 969  */
 970 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn)
 971 {
 972         struct iscsi_conn *conn = cls_conn->dd_data;
 973         struct beiscsi_conn *beiscsi_conn = conn->dd_data;
 974         struct beiscsi_endpoint *beiscsi_ep;
 975         struct beiscsi_offload_params params;
 976         struct beiscsi_hba *phba;
 977
 978         phba = ((struct beiscsi_conn *)conn->dd_data)->phba;
 979
 980         if (phba->state & BE_ADAPTER_PCI_ERR) {
 981                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
 982                             "BS_%d : In PCI_ERROR Recovery\n");
 983                 return -EBUSY;
 984         } else {
 985                 beiscsi_log(beiscsi_conn->phba, KERN_INFO,
 986                             BEISCSI_LOG_CONFIG,
 987                             "BS_%d : In beiscsi_conn_start\n");
 988         }
 989
 990         memset(&params, 0, sizeof(struct beiscsi_offload_params));
 991         beiscsi_ep = beiscsi_conn->ep;
 992         if (!beiscsi_ep)
 993                 beiscsi_log(beiscsi_conn->phba, KERN_ERR,
 994                             BEISCSI_LOG_CONFIG,
 995                             "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n");
 996
 997         beiscsi_conn->login_in_progress = 0;
 998         beiscsi_set_params_for_offld(beiscsi_conn, &params);
 999         beiscsi_offload_connection(beiscsi_conn, &params);
1000         iscsi_conn_start(cls_conn);
1001         return 0;
1002 }
1003
1004 /**
1005  * beiscsi_get_cid - Allocate a cid
1006  * @phba: The phba instance
1007  */
1008 static int beiscsi_get_cid(struct beiscsi_hba *phba)
1009 {
1010         unsigned short cid = 0xFFFF, cid_from_ulp;
1011         struct ulp_cid_info *cid_info = NULL;
1012         uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1;
1013
1014         /* Find the ULP which has more CID available */
1015         cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ?
1016                           BEISCSI_ULP0_AVLBL_CID(phba) : 0;
1017         cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ?
1018                           BEISCSI_ULP1_AVLBL_CID(phba) : 0;
1019         cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ?
1020                         BEISCSI_ULP0 : BEISCSI_ULP1;
1021
1022         if (test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) {
1023                 cid_info = phba->cid_array_info[cid_from_ulp];
1024                 if (!cid_info->avlbl_cids)
1025                         return cid;
1026
1027                 cid = cid_info->cid_array[cid_info->cid_alloc++];
1028
1029                 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(
1030                                            phba, cid_from_ulp))
1031                         cid_info->cid_alloc = 0;
1032
1033                 cid_info->avlbl_cids--;
1034         }
1035         return cid;
1036 }
1037
1038 /**
1039  * beiscsi_put_cid - Free the cid
1040  * @phba: The phba for which the cid is being freed
1041  * @cid: The cid to free
1042  */
1043 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid)
1044 {
1045         uint16_t cid_post_ulp;
1046         struct hwi_controller *phwi_ctrlr;
1047         struct hwi_wrb_context *pwrb_context;
1048         struct ulp_cid_info *cid_info = NULL;
1049         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1050
1051         phwi_ctrlr = phba->phwi_ctrlr;
1052         pwrb_context = &phwi_ctrlr->wrb_context[cri_index];
1053         cid_post_ulp = pwrb_context->ulp_num;
1054
1055         cid_info = phba->cid_array_info[cid_post_ulp];
1056         cid_info->avlbl_cids++;
1057
1058         cid_info->cid_array[cid_info->cid_free++] = cid;
1059         if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp))
1060                 cid_info->cid_free = 0;
1061 }
1062
1063 /**
1064  * beiscsi_free_ep - free endpoint
1065  * @ep: pointer to iscsi endpoint structure
1066  */
1067 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep)
1068 {
1069         struct beiscsi_hba *phba = beiscsi_ep->phba;
1070         struct beiscsi_conn *beiscsi_conn;
1071
1072         beiscsi_put_cid(phba, beiscsi_ep->ep_cid);
1073         beiscsi_ep->phba = NULL;
1074         phba->ep_array[BE_GET_CRI_FROM_CID
1075                        (beiscsi_ep->ep_cid)] = NULL;
1076
1077         /**
1078          * Check if any connection resource allocated by driver
1079          * is to be freed.This case occurs when target redirection
1080          * or connection retry is done.
1081          **/
1082         if (!beiscsi_ep->conn)
1083                 return;
1084
1085         beiscsi_conn = beiscsi_ep->conn;
1086         if (beiscsi_conn->login_in_progress) {
1087                 beiscsi_free_mgmt_task_handles(beiscsi_conn,
1088                                                beiscsi_conn->task);
1089                 beiscsi_conn->login_in_progress = 0;
1090         }
1091 }
1092
1093 /**
1094  * beiscsi_open_conn - Ask FW to open a TCP connection
1095  * @ep: endpoint to be used
1096  * @src_addr: The source IP address
1097  * @dst_addr: The Destination  IP address
1098  *
1099  * Asks the FW to open a TCP connection
1100  */
1101 static int beiscsi_open_conn(struct iscsi_endpoint *ep,
1102                              struct sockaddr *src_addr,
1103                              struct sockaddr *dst_addr, int non_blocking)
1104 {
1105         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1106         struct beiscsi_hba *phba = beiscsi_ep->phba;
1107         struct tcp_connect_and_offload_out *ptcpcnct_out;
1108         struct be_dma_mem nonemb_cmd;
1109         unsigned int tag, req_memsize;
1110         int ret = -ENOMEM;
1111
1112         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1113                     "BS_%d : In beiscsi_open_conn\n");
1114
1115         beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
1116         if (beiscsi_ep->ep_cid == 0xFFFF) {
1117                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1118                             "BS_%d : No free cid available\n");
1119                 return ret;
1120         }
1121
1122         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1123                     "BS_%d : In beiscsi_open_conn, ep_cid=%d\n",
1124                     beiscsi_ep->ep_cid);
1125
1126         phba->ep_array[BE_GET_CRI_FROM_CID
1127                        (beiscsi_ep->ep_cid)] = ep;
1128
1129         beiscsi_ep->cid_vld = 0;
1130
1131         if (is_chip_be2_be3r(phba))
1132                 req_memsize = sizeof(struct tcp_connect_and_offload_in);
1133         else
1134                 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1);
1135
1136         nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev,
1137                                 req_memsize,
1138                                 &nonemb_cmd.dma);
1139         if (nonemb_cmd.va == NULL) {
1140
1141                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1142                             "BS_%d : Failed to allocate memory for"
1143                             " mgmt_open_connection\n");
1144
1145                 beiscsi_free_ep(beiscsi_ep);
1146                 return -ENOMEM;
1147         }
1148         nonemb_cmd.size = req_memsize;
1149         memset(nonemb_cmd.va, 0, nonemb_cmd.size);
1150         tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd);
1151         if (tag <= 0) {
1152                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1153                             "BS_%d : mgmt_open_connection Failed for cid=%d\n",
1154                             beiscsi_ep->ep_cid);
1155
1156                 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1157                                     nonemb_cmd.va, nonemb_cmd.dma);
1158                 beiscsi_free_ep(beiscsi_ep);
1159                 return -EAGAIN;
1160         }
1161
1162         ret = beiscsi_mccq_compl(phba, tag, NULL, &nonemb_cmd);
1163         if (ret) {
1164                 beiscsi_log(phba, KERN_ERR,
1165                             BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX,
1166                             "BS_%d : mgmt_open_connection Failed");
1167
1168                 if (ret != -EBUSY)
1169                         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1170                                             nonemb_cmd.va, nonemb_cmd.dma);
1171
1172                 beiscsi_free_ep(beiscsi_ep);
1173                 return ret;
1174         }
1175
1176         ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va;
1177         beiscsi_ep = ep->dd_data;
1178         beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle;
1179         beiscsi_ep->cid_vld = 1;
1180         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1181                     "BS_%d : mgmt_open_connection Success\n");
1182
1183         pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size,
1184                             nonemb_cmd.va, nonemb_cmd.dma);
1185         return 0;
1186 }
1187
1188 /**
1189  * beiscsi_ep_connect - Ask chip to create TCP Conn
1190  * @scsi_host: Pointer to scsi_host structure
1191  * @dst_addr: The IP address of Target
1192  * @non_blocking: blocking or non-blocking call
1193  *
1194  * This routines first asks chip to create a connection and then allocates an EP
1195  */
1196 struct iscsi_endpoint *
1197 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1198                    int non_blocking)
1199 {
1200         struct beiscsi_hba *phba;
1201         struct beiscsi_endpoint *beiscsi_ep;
1202         struct iscsi_endpoint *ep;
1203         int ret;
1204
1205         if (shost)
1206                 phba = iscsi_host_priv(shost);
1207         else {
1208                 ret = -ENXIO;
1209                 printk(KERN_ERR
1210                        "beiscsi_ep_connect shost is NULL\n");
1211                 return ERR_PTR(ret);
1212         }
1213
1214         if (beiscsi_error(phba)) {
1215                 ret = -EIO;
1216                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1217                             "BS_%d : The FW state Not Stable!!!\n");
1218                 return ERR_PTR(ret);
1219         }
1220
1221         if (phba->state & BE_ADAPTER_PCI_ERR) {
1222                 ret = -EBUSY;
1223                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1224                             "BS_%d : In PCI_ERROR Recovery\n");
1225                 return ERR_PTR(ret);
1226         } else if (phba->state & BE_ADAPTER_LINK_DOWN) {
1227                 ret = -EBUSY;
1228                 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG,
1229                             "BS_%d : The Adapter Port state is Down!!!\n");
1230                 return ERR_PTR(ret);
1231         }
1232
1233         ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint));
1234         if (!ep) {
1235                 ret = -ENOMEM;
1236                 return ERR_PTR(ret);
1237         }
1238
1239         beiscsi_ep = ep->dd_data;
1240         beiscsi_ep->phba = phba;
1241         beiscsi_ep->openiscsi_ep = ep;
1242         ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking);
1243         if (ret) {
1244                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1245                             "BS_%d : Failed in beiscsi_open_conn\n");
1246                 goto free_ep;
1247         }
1248
1249         return ep;
1250
1251 free_ep:
1252         iscsi_destroy_endpoint(ep);
1253         return ERR_PTR(ret);
1254 }
1255
1256 /**
1257  * beiscsi_ep_poll - Poll to see if connection is established
1258  * @ep: endpoint to be used
1259  * @timeout_ms: timeout specified in millisecs
1260  *
1261  * Poll to see if TCP connection established
1262  */
1263 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1264 {
1265         struct beiscsi_endpoint *beiscsi_ep = ep->dd_data;
1266
1267         beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1268                     "BS_%d : In  beiscsi_ep_poll\n");
1269
1270         if (beiscsi_ep->cid_vld == 1)
1271                 return 1;
1272         else
1273                 return 0;
1274 }
1275
1276 /**
1277  * beiscsi_flush_cq()- Flush the CQ created.
1278  * @phba: ptr device priv structure.
1279  *
1280  * Before the connection resource are freed flush
1281  * all the CQ enteries
1282  **/
1283 static void beiscsi_flush_cq(struct beiscsi_hba *phba)
1284 {
1285         uint16_t i;
1286         struct be_eq_obj *pbe_eq;
1287         struct hwi_controller *phwi_ctrlr;
1288         struct hwi_context_memory *phwi_context;
1289
1290         phwi_ctrlr = phba->phwi_ctrlr;
1291         phwi_context = phwi_ctrlr->phwi_ctxt;
1292
1293         for (i = 0; i < phba->num_cpus; i++) {
1294                 pbe_eq = &phwi_context->be_eq[i];
1295                 blk_iopoll_disable(&pbe_eq->iopoll);
1296                 beiscsi_process_cq(pbe_eq);
1297                 blk_iopoll_enable(&pbe_eq->iopoll);
1298         }
1299 }
1300
1301 /**
1302  * beiscsi_close_conn - Upload the  connection
1303  * @ep: The iscsi endpoint
1304  * @flag: The type of connection closure
1305  */
1306 static int beiscsi_close_conn(struct  beiscsi_endpoint *beiscsi_ep, int flag)
1307 {
1308         int ret = 0;
1309         unsigned int tag;
1310         struct beiscsi_hba *phba = beiscsi_ep->phba;
1311
1312         tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag);
1313         if (!tag) {
1314                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1315                             "BS_%d : upload failed for cid 0x%x\n",
1316                             beiscsi_ep->ep_cid);
1317
1318                 ret = -EAGAIN;
1319         }
1320
1321         ret = beiscsi_mccq_compl(phba, tag, NULL, NULL);
1322
1323         /* Flush the CQ entries */
1324         beiscsi_flush_cq(phba);
1325
1326         return ret;
1327 }
1328
1329 /**
1330  * beiscsi_unbind_conn_to_cid - Unbind the beiscsi_conn from phba conn table
1331  * @phba: The phba instance
1332  * @cid: The cid to free
1333  */
1334 static int beiscsi_unbind_conn_to_cid(struct beiscsi_hba *phba,
1335                                       unsigned int cid)
1336 {
1337         uint16_t cri_index = BE_GET_CRI_FROM_CID(cid);
1338
1339         if (phba->conn_table[cri_index])
1340                 phba->conn_table[cri_index] = NULL;
1341         else {
1342                 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1343                             "BS_%d : Connection table Not occupied.\n");
1344                 return -EINVAL;
1345         }
1346         return 0;
1347 }
1348
1349 /**
1350  * beiscsi_ep_disconnect - Tears down the TCP connection
1351  * @ep: endpoint to be used
1352  *
1353  * Tears down the TCP connection
1354  */
1355 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep)
1356 {
1357         struct beiscsi_conn *beiscsi_conn;
1358         struct beiscsi_endpoint *beiscsi_ep;
1359         struct beiscsi_hba *phba;
1360         unsigned int tag;
1361         uint8_t mgmt_invalidate_flag, tcp_upload_flag;
1362         unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH;
1363
1364         beiscsi_ep = ep->dd_data;
1365         phba = beiscsi_ep->phba;
1366         beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG,
1367                     "BS_%d : In beiscsi_ep_disconnect for ep_cid = %d\n",
1368                     beiscsi_ep->ep_cid);
1369
1370         if (beiscsi_ep->conn) {
1371                 beiscsi_conn = beiscsi_ep->conn;
1372                 iscsi_suspend_queue(beiscsi_conn->conn);
1373                 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE;
1374                 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL;
1375         } else {
1376                 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE;
1377                 tcp_upload_flag = CONNECTION_UPLOAD_ABORT;
1378         }
1379
1380         if (phba->state & BE_ADAPTER_PCI_ERR) {
1381                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1382                             "BS_%d : PCI_ERROR Recovery\n");
1383                 goto free_ep;
1384         }
1385
1386         tag = mgmt_invalidate_connection(phba, beiscsi_ep,
1387                                           beiscsi_ep->ep_cid,
1388                                           mgmt_invalidate_flag,
1389                                           savecfg_flag);
1390         if (!tag) {
1391                 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG,
1392                             "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n",
1393                             beiscsi_ep->ep_cid);
1394         }
1395
1396         beiscsi_mccq_compl(phba, tag, NULL, NULL);
1397         beiscsi_close_conn(beiscsi_ep, tcp_upload_flag);
1398 free_ep:
1399         msleep(BEISCSI_LOGOUT_SYNC_DELAY);
1400         beiscsi_free_ep(beiscsi_ep);
1401         beiscsi_unbind_conn_to_cid(phba, beiscsi_ep->ep_cid);
1402         iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep);
1403 }
1404
1405 umode_t be2iscsi_attr_is_visible(int param_type, int param)
1406 {
1407         switch (param_type) {
1408         case ISCSI_NET_PARAM:
1409                 switch (param) {
1410                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1411                 case ISCSI_NET_PARAM_IPV4_ADDR:
1412                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1413                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1414                 case ISCSI_NET_PARAM_IPV4_GW:
1415                 case ISCSI_NET_PARAM_IPV6_ADDR:
1416                 case ISCSI_NET_PARAM_VLAN_ID:
1417                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1418                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1419                         return S_IRUGO;
1420                 default:
1421                         return 0;
1422                 }
1423         case ISCSI_HOST_PARAM:
1424                 switch (param) {
1425                 case ISCSI_HOST_PARAM_HWADDRESS:
1426                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
1427                 case ISCSI_HOST_PARAM_PORT_STATE:
1428                 case ISCSI_HOST_PARAM_PORT_SPEED:
1429                         return S_IRUGO;
1430                 default:
1431                         return 0;
1432                 }
1433         case ISCSI_PARAM:
1434                 switch (param) {
1435                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
1436                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
1437                 case ISCSI_PARAM_HDRDGST_EN:
1438                 case ISCSI_PARAM_DATADGST_EN:
1439                 case ISCSI_PARAM_CONN_ADDRESS:
1440                 case ISCSI_PARAM_CONN_PORT:
1441                 case ISCSI_PARAM_EXP_STATSN:
1442                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
1443                 case ISCSI_PARAM_PERSISTENT_PORT:
1444                 case ISCSI_PARAM_PING_TMO:
1445                 case ISCSI_PARAM_RECV_TMO:
1446                 case ISCSI_PARAM_INITIAL_R2T_EN:
1447                 case ISCSI_PARAM_MAX_R2T:
1448                 case ISCSI_PARAM_IMM_DATA_EN:
1449                 case ISCSI_PARAM_FIRST_BURST:
1450                 case ISCSI_PARAM_MAX_BURST:
1451                 case ISCSI_PARAM_PDU_INORDER_EN:
1452                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
1453                 case ISCSI_PARAM_ERL:
1454                 case ISCSI_PARAM_TARGET_NAME:
1455                 case ISCSI_PARAM_TPGT:
1456                 case ISCSI_PARAM_USERNAME:
1457                 case ISCSI_PARAM_PASSWORD:
1458                 case ISCSI_PARAM_USERNAME_IN:
1459                 case ISCSI_PARAM_PASSWORD_IN:
1460                 case ISCSI_PARAM_FAST_ABORT:
1461                 case ISCSI_PARAM_ABORT_TMO:
1462                 case ISCSI_PARAM_LU_RESET_TMO:
1463                 case ISCSI_PARAM_IFACE_NAME:
1464                 case ISCSI_PARAM_INITIATOR_NAME:
1465                         return S_IRUGO;
1466                 default:
1467                         return 0;
1468                 }
1469         }
1470
1471         return 0;
1472 }