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(¶ms, 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, ¶ms); 983 beiscsi_offload_connection(beiscsi_conn, ¶ms); 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 } 1457