1 /** 2 * Copyright (C) 2005 - 2016 Broadcom 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@broadcom.com) 11 * 12 * Contact Information: 13 * linux-drivers@broadcom.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 pr_err("beiscsi_session_create: invalid ep\n"); 56 return NULL; 57 } 58 beiscsi_ep = ep->dd_data; 59 phba = beiscsi_ep->phba; 60 61 if (!beiscsi_hba_is_online(phba)) { 62 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 63 "BS_%d : HBA in error 0x%lx\n", phba->state); 64 return NULL; 65 } 66 67 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 68 "BS_%d : In beiscsi_session_create\n"); 69 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) { 70 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 71 "BS_%d : Cannot handle %d cmds." 72 "Max cmds per session supported is %d. Using %d." 73 "\n", cmds_max, 74 beiscsi_ep->phba->params.wrbs_per_cxn, 75 beiscsi_ep->phba->params.wrbs_per_cxn); 76 77 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn; 78 } 79 80 shost = phba->shost; 81 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport, 82 shost, cmds_max, 83 sizeof(*beiscsi_sess), 84 sizeof(*io_task), 85 initial_cmdsn, ISCSI_MAX_TARGET); 86 if (!cls_session) 87 return NULL; 88 sess = cls_session->dd_data; 89 beiscsi_sess = sess->dd_data; 90 beiscsi_sess->bhs_pool = pci_pool_create("beiscsi_bhs_pool", 91 phba->pcidev, 92 sizeof(struct be_cmd_bhs), 93 64, 0); 94 if (!beiscsi_sess->bhs_pool) 95 goto destroy_sess; 96 97 return cls_session; 98 destroy_sess: 99 iscsi_session_teardown(cls_session); 100 return NULL; 101 } 102 103 /** 104 * beiscsi_session_destroy - destroys iscsi session 105 * @cls_session: pointer to iscsi cls session 106 * 107 * Destroys iSCSI session instance and releases 108 * resources allocated for it. 109 */ 110 void beiscsi_session_destroy(struct iscsi_cls_session *cls_session) 111 { 112 struct iscsi_session *sess = cls_session->dd_data; 113 struct beiscsi_session *beiscsi_sess = sess->dd_data; 114 115 printk(KERN_INFO "In beiscsi_session_destroy\n"); 116 pci_pool_destroy(beiscsi_sess->bhs_pool); 117 iscsi_session_teardown(cls_session); 118 } 119 120 /** 121 * beiscsi_session_fail(): Closing session with appropriate error 122 * @cls_session: ptr to session 123 **/ 124 void beiscsi_session_fail(struct iscsi_cls_session *cls_session) 125 { 126 iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED); 127 } 128 129 130 /** 131 * beiscsi_conn_create - create an instance of iscsi connection 132 * @cls_session: ptr to iscsi_cls_session 133 * @cid: iscsi cid 134 */ 135 struct iscsi_cls_conn * 136 beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid) 137 { 138 struct beiscsi_hba *phba; 139 struct Scsi_Host *shost; 140 struct iscsi_cls_conn *cls_conn; 141 struct beiscsi_conn *beiscsi_conn; 142 struct iscsi_conn *conn; 143 struct iscsi_session *sess; 144 struct beiscsi_session *beiscsi_sess; 145 146 shost = iscsi_session_to_shost(cls_session); 147 phba = iscsi_host_priv(shost); 148 149 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 150 "BS_%d : In beiscsi_conn_create ,cid" 151 "from iscsi layer=%d\n", cid); 152 153 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid); 154 if (!cls_conn) 155 return NULL; 156 157 conn = cls_conn->dd_data; 158 beiscsi_conn = conn->dd_data; 159 beiscsi_conn->ep = NULL; 160 beiscsi_conn->phba = phba; 161 beiscsi_conn->conn = conn; 162 sess = cls_session->dd_data; 163 beiscsi_sess = sess->dd_data; 164 beiscsi_conn->beiscsi_sess = beiscsi_sess; 165 return cls_conn; 166 } 167 168 /** 169 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection 170 * @cls_session: pointer to iscsi cls session 171 * @cls_conn: pointer to iscsi cls conn 172 * @transport_fd: EP handle(64 bit) 173 * 174 * This function binds the TCP Conn with iSCSI Connection and Session. 175 */ 176 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, 177 struct iscsi_cls_conn *cls_conn, 178 u64 transport_fd, int is_leading) 179 { 180 struct iscsi_conn *conn = cls_conn->dd_data; 181 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 182 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 183 struct beiscsi_hba *phba = iscsi_host_priv(shost); 184 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr; 185 struct hwi_wrb_context *pwrb_context; 186 struct beiscsi_endpoint *beiscsi_ep; 187 struct iscsi_endpoint *ep; 188 uint16_t cri_index; 189 190 ep = iscsi_lookup_endpoint(transport_fd); 191 if (!ep) 192 return -EINVAL; 193 194 beiscsi_ep = ep->dd_data; 195 196 if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) 197 return -EINVAL; 198 199 if (beiscsi_ep->phba != phba) { 200 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 201 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", 202 beiscsi_ep->phba, phba); 203 204 return -EEXIST; 205 } 206 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 207 if (phba->conn_table[cri_index]) { 208 if (beiscsi_conn != phba->conn_table[cri_index] || 209 beiscsi_ep != phba->conn_table[cri_index]->ep) { 210 __beiscsi_log(phba, KERN_ERR, 211 "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n", 212 cri_index, 213 beiscsi_ep->ep_cid, 214 beiscsi_conn, 215 phba->conn_table[cri_index]); 216 return -EINVAL; 217 } 218 } 219 220 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; 221 beiscsi_conn->ep = beiscsi_ep; 222 beiscsi_ep->conn = beiscsi_conn; 223 /** 224 * Each connection is associated with a WRBQ kept in wrb_context. 225 * Store doorbell offset for transmit path. 226 */ 227 pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; 228 beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset; 229 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 230 "BS_%d : cid %d phba->conn_table[%u]=%p\n", 231 beiscsi_ep->ep_cid, cri_index, beiscsi_conn); 232 phba->conn_table[cri_index] = beiscsi_conn; 233 return 0; 234 } 235 236 static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba) 237 { 238 if (phba->ipv4_iface) 239 return 0; 240 241 phba->ipv4_iface = iscsi_create_iface(phba->shost, 242 &beiscsi_iscsi_transport, 243 ISCSI_IFACE_TYPE_IPV4, 244 0, 0); 245 if (!phba->ipv4_iface) { 246 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 247 "BS_%d : Could not " 248 "create default IPv4 address.\n"); 249 return -ENODEV; 250 } 251 252 return 0; 253 } 254 255 static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba) 256 { 257 if (phba->ipv6_iface) 258 return 0; 259 260 phba->ipv6_iface = iscsi_create_iface(phba->shost, 261 &beiscsi_iscsi_transport, 262 ISCSI_IFACE_TYPE_IPV6, 263 0, 0); 264 if (!phba->ipv6_iface) { 265 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 266 "BS_%d : Could not " 267 "create default IPv6 address.\n"); 268 return -ENODEV; 269 } 270 271 return 0; 272 } 273 274 void beiscsi_iface_create_default(struct beiscsi_hba *phba) 275 { 276 struct be_cmd_get_if_info_resp *if_info; 277 278 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) { 279 beiscsi_iface_create_ipv4(phba); 280 kfree(if_info); 281 } 282 283 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) { 284 beiscsi_iface_create_ipv6(phba); 285 kfree(if_info); 286 } 287 } 288 289 void beiscsi_iface_destroy_default(struct beiscsi_hba *phba) 290 { 291 if (phba->ipv6_iface) { 292 iscsi_destroy_iface(phba->ipv6_iface); 293 phba->ipv6_iface = NULL; 294 } 295 if (phba->ipv4_iface) { 296 iscsi_destroy_iface(phba->ipv4_iface); 297 phba->ipv4_iface = NULL; 298 } 299 } 300 301 /** 302 * beiscsi_set_vlan_tag()- Set the VLAN TAG 303 * @shost: Scsi Host for the driver instance 304 * @iface_param: Interface paramters 305 * 306 * Set the VLAN TAG for the adapter or disable 307 * the VLAN config 308 * 309 * returns 310 * Success: 0 311 * Failure: Non-Zero Value 312 **/ 313 static int 314 beiscsi_iface_config_vlan(struct Scsi_Host *shost, 315 struct iscsi_iface_param_info *iface_param) 316 { 317 struct beiscsi_hba *phba = iscsi_host_priv(shost); 318 int ret = -EPERM; 319 320 switch (iface_param->param) { 321 case ISCSI_NET_PARAM_VLAN_ENABLED: 322 ret = 0; 323 if (iface_param->value[0] != ISCSI_VLAN_ENABLE) 324 ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE); 325 break; 326 case ISCSI_NET_PARAM_VLAN_TAG: 327 ret = beiscsi_if_set_vlan(phba, 328 *((uint16_t *)iface_param->value)); 329 break; 330 } 331 return ret; 332 } 333 334 335 static int 336 beiscsi_iface_config_ipv4(struct Scsi_Host *shost, 337 struct iscsi_iface_param_info *info, 338 void *data, uint32_t dt_len) 339 { 340 struct beiscsi_hba *phba = iscsi_host_priv(shost); 341 u8 *ip = NULL, *subnet = NULL, *gw; 342 struct nlattr *nla; 343 int ret = -EPERM; 344 345 /* Check the param */ 346 switch (info->param) { 347 case ISCSI_NET_PARAM_IFACE_ENABLE: 348 if (info->value[0] == ISCSI_IFACE_ENABLE) 349 ret = beiscsi_iface_create_ipv4(phba); 350 else { 351 iscsi_destroy_iface(phba->ipv4_iface); 352 phba->ipv4_iface = NULL; 353 } 354 break; 355 case ISCSI_NET_PARAM_IPV4_GW: 356 gw = info->value; 357 ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw); 358 break; 359 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 360 if (info->value[0] == ISCSI_BOOTPROTO_DHCP) 361 ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4); 362 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC) 363 /* release DHCP IP address */ 364 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 365 NULL, NULL); 366 else 367 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 368 "BS_%d : Invalid BOOTPROTO: %d\n", 369 info->value[0]); 370 break; 371 case ISCSI_NET_PARAM_IPV4_ADDR: 372 ip = info->value; 373 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); 374 if (nla) { 375 info = nla_data(nla); 376 subnet = info->value; 377 } 378 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 379 ip, subnet); 380 break; 381 case ISCSI_NET_PARAM_IPV4_SUBNET: 382 /* 383 * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP 384 * and subnet both. Find IP to be applied for this subnet. 385 */ 386 subnet = info->value; 387 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); 388 if (nla) { 389 info = nla_data(nla); 390 ip = info->value; 391 } 392 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 393 ip, subnet); 394 break; 395 } 396 397 return ret; 398 } 399 400 static int 401 beiscsi_iface_config_ipv6(struct Scsi_Host *shost, 402 struct iscsi_iface_param_info *iface_param, 403 void *data, uint32_t dt_len) 404 { 405 struct beiscsi_hba *phba = iscsi_host_priv(shost); 406 int ret = -EPERM; 407 408 switch (iface_param->param) { 409 case ISCSI_NET_PARAM_IFACE_ENABLE: 410 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) 411 ret = beiscsi_iface_create_ipv6(phba); 412 else { 413 iscsi_destroy_iface(phba->ipv6_iface); 414 phba->ipv6_iface = NULL; 415 } 416 break; 417 case ISCSI_NET_PARAM_IPV6_ADDR: 418 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6, 419 iface_param->value, NULL); 420 break; 421 } 422 423 return ret; 424 } 425 426 int beiscsi_iface_set_param(struct Scsi_Host *shost, 427 void *data, uint32_t dt_len) 428 { 429 struct iscsi_iface_param_info *iface_param = NULL; 430 struct beiscsi_hba *phba = iscsi_host_priv(shost); 431 struct nlattr *attrib; 432 uint32_t rm_len = dt_len; 433 int ret; 434 435 if (!beiscsi_hba_is_online(phba)) { 436 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 437 "BS_%d : HBA in error 0x%lx\n", phba->state); 438 return -EBUSY; 439 } 440 441 /* update interface_handle */ 442 ret = beiscsi_if_get_handle(phba); 443 if (ret) { 444 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 445 "BS_%d : Getting Interface Handle Failed\n"); 446 return ret; 447 } 448 449 nla_for_each_attr(attrib, data, dt_len, rm_len) { 450 iface_param = nla_data(attrib); 451 452 if (iface_param->param_type != ISCSI_NET_PARAM) 453 continue; 454 455 /* 456 * BE2ISCSI only supports 1 interface 457 */ 458 if (iface_param->iface_num) { 459 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 460 "BS_%d : Invalid iface_num %d." 461 "Only iface_num 0 is supported.\n", 462 iface_param->iface_num); 463 464 return -EINVAL; 465 } 466 467 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 468 "BS_%d : %s.0 set param %d", 469 (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ? 470 "ipv4" : "ipv6", iface_param->param); 471 472 ret = -EPERM; 473 switch (iface_param->param) { 474 case ISCSI_NET_PARAM_VLAN_ENABLED: 475 case ISCSI_NET_PARAM_VLAN_TAG: 476 ret = beiscsi_iface_config_vlan(shost, iface_param); 477 break; 478 default: 479 switch (iface_param->iface_type) { 480 case ISCSI_IFACE_TYPE_IPV4: 481 ret = beiscsi_iface_config_ipv4(shost, 482 iface_param, 483 data, dt_len); 484 break; 485 case ISCSI_IFACE_TYPE_IPV6: 486 ret = beiscsi_iface_config_ipv6(shost, 487 iface_param, 488 data, dt_len); 489 break; 490 } 491 } 492 493 if (ret == -EPERM) { 494 __beiscsi_log(phba, KERN_ERR, 495 "BS_%d : %s.0 set param %d not permitted", 496 (iface_param->iface_type == 497 ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6", 498 iface_param->param); 499 ret = 0; 500 } 501 if (ret) 502 break; 503 } 504 505 return ret; 506 } 507 508 static int __beiscsi_iface_get_param(struct beiscsi_hba *phba, 509 struct iscsi_iface *iface, 510 int param, char *buf) 511 { 512 struct be_cmd_get_if_info_resp *if_info; 513 int len, ip_type = BEISCSI_IP_TYPE_V4; 514 515 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 516 ip_type = BEISCSI_IP_TYPE_V6; 517 518 len = beiscsi_if_get_info(phba, ip_type, &if_info); 519 if (len) 520 return len; 521 522 switch (param) { 523 case ISCSI_NET_PARAM_IPV4_ADDR: 524 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr); 525 break; 526 case ISCSI_NET_PARAM_IPV6_ADDR: 527 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr); 528 break; 529 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 530 if (!if_info->dhcp_state) 531 len = sprintf(buf, "static\n"); 532 else 533 len = sprintf(buf, "dhcp\n"); 534 break; 535 case ISCSI_NET_PARAM_IPV4_SUBNET: 536 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask); 537 break; 538 case ISCSI_NET_PARAM_VLAN_ENABLED: 539 len = sprintf(buf, "%s\n", 540 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ? 541 "disable" : "enable"); 542 break; 543 case ISCSI_NET_PARAM_VLAN_ID: 544 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 545 len = -EINVAL; 546 else 547 len = sprintf(buf, "%d\n", 548 (if_info->vlan_priority & 549 ISCSI_MAX_VLAN_ID)); 550 break; 551 case ISCSI_NET_PARAM_VLAN_PRIORITY: 552 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 553 len = -EINVAL; 554 else 555 len = sprintf(buf, "%d\n", 556 ((if_info->vlan_priority >> 13) & 557 ISCSI_MAX_VLAN_PRIORITY)); 558 break; 559 default: 560 WARN_ON(1); 561 } 562 563 kfree(if_info); 564 return len; 565 } 566 567 int beiscsi_iface_get_param(struct iscsi_iface *iface, 568 enum iscsi_param_type param_type, 569 int param, char *buf) 570 { 571 struct Scsi_Host *shost = iscsi_iface_to_shost(iface); 572 struct beiscsi_hba *phba = iscsi_host_priv(shost); 573 struct be_cmd_get_def_gateway_resp gateway; 574 int len = -EPERM; 575 576 if (param_type != ISCSI_NET_PARAM) 577 return 0; 578 if (!beiscsi_hba_is_online(phba)) { 579 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 580 "BS_%d : HBA in error 0x%lx\n", phba->state); 581 return -EBUSY; 582 } 583 584 switch (param) { 585 case ISCSI_NET_PARAM_IPV4_ADDR: 586 case ISCSI_NET_PARAM_IPV4_SUBNET: 587 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 588 case ISCSI_NET_PARAM_IPV6_ADDR: 589 case ISCSI_NET_PARAM_VLAN_ENABLED: 590 case ISCSI_NET_PARAM_VLAN_ID: 591 case ISCSI_NET_PARAM_VLAN_PRIORITY: 592 len = __beiscsi_iface_get_param(phba, iface, param, buf); 593 break; 594 case ISCSI_NET_PARAM_IFACE_ENABLE: 595 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) 596 len = sprintf(buf, "%s\n", 597 phba->ipv4_iface ? "enable" : "disable"); 598 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 599 len = sprintf(buf, "%s\n", 600 phba->ipv6_iface ? "enable" : "disable"); 601 break; 602 case ISCSI_NET_PARAM_IPV4_GW: 603 memset(&gateway, 0, sizeof(gateway)); 604 len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway); 605 if (!len) 606 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr); 607 break; 608 } 609 610 return len; 611 } 612 613 /** 614 * beiscsi_ep_get_param - get the iscsi parameter 615 * @ep: pointer to iscsi ep 616 * @param: parameter type identifier 617 * @buf: buffer pointer 618 * 619 * returns iscsi parameter 620 */ 621 int beiscsi_ep_get_param(struct iscsi_endpoint *ep, 622 enum iscsi_param param, char *buf) 623 { 624 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 625 int len; 626 627 beiscsi_log(beiscsi_ep->phba, KERN_INFO, 628 BEISCSI_LOG_CONFIG, 629 "BS_%d : In beiscsi_ep_get_param," 630 " param= %d\n", param); 631 632 switch (param) { 633 case ISCSI_PARAM_CONN_PORT: 634 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport); 635 break; 636 case ISCSI_PARAM_CONN_ADDRESS: 637 if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4) 638 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); 639 else 640 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); 641 break; 642 default: 643 len = -EPERM; 644 } 645 return len; 646 } 647 648 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn, 649 enum iscsi_param param, char *buf, int buflen) 650 { 651 struct iscsi_conn *conn = cls_conn->dd_data; 652 struct iscsi_session *session = conn->session; 653 struct beiscsi_hba *phba = NULL; 654 int ret; 655 656 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 657 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 658 "BS_%d : In beiscsi_conn_set_param," 659 " param= %d\n", param); 660 661 ret = iscsi_set_param(cls_conn, param, buf, buflen); 662 if (ret) 663 return ret; 664 /* 665 * If userspace tried to set the value to higher than we can 666 * support override here. 667 */ 668 switch (param) { 669 case ISCSI_PARAM_FIRST_BURST: 670 if (session->first_burst > 8192) 671 session->first_burst = 8192; 672 break; 673 case ISCSI_PARAM_MAX_RECV_DLENGTH: 674 if (conn->max_recv_dlength > 65536) 675 conn->max_recv_dlength = 65536; 676 break; 677 case ISCSI_PARAM_MAX_BURST: 678 if (session->max_burst > 262144) 679 session->max_burst = 262144; 680 break; 681 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 682 if (conn->max_xmit_dlength > 65536) 683 conn->max_xmit_dlength = 65536; 684 default: 685 return 0; 686 } 687 688 return 0; 689 } 690 691 /** 692 * beiscsi_get_initname - Read Initiator Name from flash 693 * @buf: buffer bointer 694 * @phba: The device priv structure instance 695 * 696 * returns number of bytes 697 */ 698 static int beiscsi_get_initname(char *buf, struct beiscsi_hba *phba) 699 { 700 int rc; 701 unsigned int tag; 702 struct be_mcc_wrb *wrb; 703 struct be_cmd_hba_name *resp; 704 705 tag = be_cmd_get_initname(phba); 706 if (!tag) { 707 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 708 "BS_%d : Getting Initiator Name Failed\n"); 709 710 return -EBUSY; 711 } 712 713 rc = beiscsi_mccq_compl_wait(phba, tag, &wrb, NULL); 714 if (rc) { 715 beiscsi_log(phba, KERN_ERR, 716 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, 717 "BS_%d : Initiator Name MBX Failed\n"); 718 return rc; 719 } 720 721 resp = embedded_payload(wrb); 722 rc = sprintf(buf, "%s\n", resp->initiator_name); 723 return rc; 724 } 725 726 /** 727 * beiscsi_get_port_state - Get the Port State 728 * @shost : pointer to scsi_host structure 729 * 730 */ 731 static void beiscsi_get_port_state(struct Scsi_Host *shost) 732 { 733 struct beiscsi_hba *phba = iscsi_host_priv(shost); 734 struct iscsi_cls_host *ihost = shost->shost_data; 735 736 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ? 737 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN; 738 } 739 740 /** 741 * beiscsi_get_port_speed - Get the Port Speed from Adapter 742 * @shost : pointer to scsi_host structure 743 * 744 */ 745 static void beiscsi_get_port_speed(struct Scsi_Host *shost) 746 { 747 struct beiscsi_hba *phba = iscsi_host_priv(shost); 748 struct iscsi_cls_host *ihost = shost->shost_data; 749 750 switch (phba->port_speed) { 751 case BE2ISCSI_LINK_SPEED_10MBPS: 752 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS; 753 break; 754 case BE2ISCSI_LINK_SPEED_100MBPS: 755 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS; 756 break; 757 case BE2ISCSI_LINK_SPEED_1GBPS: 758 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS; 759 break; 760 case BE2ISCSI_LINK_SPEED_10GBPS: 761 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS; 762 break; 763 case BE2ISCSI_LINK_SPEED_25GBPS: 764 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS; 765 break; 766 case BE2ISCSI_LINK_SPEED_40GBPS: 767 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS; 768 break; 769 default: 770 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN; 771 } 772 } 773 774 /** 775 * beiscsi_get_host_param - get the iscsi parameter 776 * @shost: pointer to scsi_host structure 777 * @param: parameter type identifier 778 * @buf: buffer pointer 779 * 780 * returns host parameter 781 */ 782 int beiscsi_get_host_param(struct Scsi_Host *shost, 783 enum iscsi_host_param param, char *buf) 784 { 785 struct beiscsi_hba *phba = iscsi_host_priv(shost); 786 int status = 0; 787 788 if (!beiscsi_hba_is_online(phba)) { 789 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 790 "BS_%d : HBA in error 0x%lx\n", phba->state); 791 return -EBUSY; 792 } 793 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 794 "BS_%d : In beiscsi_get_host_param, param = %d\n", param); 795 796 switch (param) { 797 case ISCSI_HOST_PARAM_HWADDRESS: 798 status = beiscsi_get_macaddr(buf, phba); 799 if (status < 0) { 800 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 801 "BS_%d : beiscsi_get_macaddr Failed\n"); 802 return status; 803 } 804 break; 805 case ISCSI_HOST_PARAM_INITIATOR_NAME: 806 status = beiscsi_get_initname(buf, phba); 807 if (status < 0) { 808 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 809 "BS_%d : Retreiving Initiator Name Failed\n"); 810 return status; 811 } 812 break; 813 case ISCSI_HOST_PARAM_PORT_STATE: 814 beiscsi_get_port_state(shost); 815 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost)); 816 break; 817 case ISCSI_HOST_PARAM_PORT_SPEED: 818 beiscsi_get_port_speed(shost); 819 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost)); 820 break; 821 default: 822 return iscsi_host_get_param(shost, param, buf); 823 } 824 return status; 825 } 826 827 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba) 828 { 829 struct be_cmd_get_nic_conf_resp resp; 830 int rc; 831 832 if (phba->mac_addr_set) 833 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 834 835 memset(&resp, 0, sizeof(resp)); 836 rc = mgmt_get_nic_conf(phba, &resp); 837 if (rc) 838 return rc; 839 840 phba->mac_addr_set = true; 841 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN); 842 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 843 } 844 845 /** 846 * beiscsi_conn_get_stats - get the iscsi stats 847 * @cls_conn: pointer to iscsi cls conn 848 * @stats: pointer to iscsi_stats structure 849 * 850 * returns iscsi stats 851 */ 852 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, 853 struct iscsi_stats *stats) 854 { 855 struct iscsi_conn *conn = cls_conn->dd_data; 856 struct beiscsi_hba *phba = NULL; 857 858 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 859 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 860 "BS_%d : In beiscsi_conn_get_stats\n"); 861 862 stats->txdata_octets = conn->txdata_octets; 863 stats->rxdata_octets = conn->rxdata_octets; 864 stats->dataout_pdus = conn->dataout_pdus_cnt; 865 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; 866 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; 867 stats->datain_pdus = conn->datain_pdus_cnt; 868 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; 869 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; 870 stats->r2t_pdus = conn->r2t_pdus_cnt; 871 stats->digest_err = 0; 872 stats->timeout_err = 0; 873 stats->custom_length = 1; 874 strcpy(stats->custom[0].desc, "eh_abort_cnt"); 875 stats->custom[0].value = conn->eh_abort_cnt; 876 } 877 878 /** 879 * beiscsi_set_params_for_offld - get the parameters for offload 880 * @beiscsi_conn: pointer to beiscsi_conn 881 * @params: pointer to offload_params structure 882 */ 883 static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn, 884 struct beiscsi_offload_params *params) 885 { 886 struct iscsi_conn *conn = beiscsi_conn->conn; 887 struct iscsi_session *session = conn->session; 888 889 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length, 890 params, session->max_burst); 891 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 892 max_send_data_segment_length, params, 893 conn->max_xmit_dlength); 894 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length, 895 params, session->first_burst); 896 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params, 897 session->erl); 898 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params, 899 conn->datadgst_en); 900 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params, 901 conn->hdrdgst_en); 902 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params, 903 session->initial_r2t_en); 904 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params, 905 session->imm_data_en); 906 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 907 data_seq_inorder, params, 908 session->dataseq_inorder_en); 909 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 910 pdu_seq_inorder, params, 911 session->pdu_inorder_en); 912 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params, 913 session->max_r2t); 914 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params, 915 (conn->exp_statsn - 1)); 916 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 917 max_recv_data_segment_length, params, 918 conn->max_recv_dlength); 919 920 } 921 922 /** 923 * beiscsi_conn_start - offload of session to chip 924 * @cls_conn: pointer to beiscsi_conn 925 */ 926 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn) 927 { 928 struct iscsi_conn *conn = cls_conn->dd_data; 929 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 930 struct beiscsi_endpoint *beiscsi_ep; 931 struct beiscsi_offload_params params; 932 struct beiscsi_hba *phba; 933 934 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 935 936 if (!beiscsi_hba_is_online(phba)) { 937 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 938 "BS_%d : HBA in error 0x%lx\n", phba->state); 939 return -EBUSY; 940 } 941 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 942 "BS_%d : In beiscsi_conn_start\n"); 943 944 memset(¶ms, 0, sizeof(struct beiscsi_offload_params)); 945 beiscsi_ep = beiscsi_conn->ep; 946 if (!beiscsi_ep) 947 beiscsi_log(beiscsi_conn->phba, KERN_ERR, 948 BEISCSI_LOG_CONFIG, 949 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n"); 950 951 beiscsi_conn->login_in_progress = 0; 952 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms); 953 beiscsi_offload_connection(beiscsi_conn, ¶ms); 954 iscsi_conn_start(cls_conn); 955 return 0; 956 } 957 958 /** 959 * beiscsi_get_cid - Allocate a cid 960 * @phba: The phba instance 961 */ 962 static int beiscsi_get_cid(struct beiscsi_hba *phba) 963 { 964 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1; 965 unsigned short cid, cid_from_ulp; 966 struct ulp_cid_info *cid_info; 967 968 /* Find the ULP which has more CID available */ 969 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ? 970 BEISCSI_ULP0_AVLBL_CID(phba) : 0; 971 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ? 972 BEISCSI_ULP1_AVLBL_CID(phba) : 0; 973 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ? 974 BEISCSI_ULP0 : BEISCSI_ULP1; 975 /** 976 * If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp 977 * is ZERO for both, ULP 1 is returned. 978 * Check if ULP is loaded before getting new CID. 979 */ 980 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) 981 return BE_INVALID_CID; 982 983 cid_info = phba->cid_array_info[cid_from_ulp]; 984 cid = cid_info->cid_array[cid_info->cid_alloc]; 985 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) { 986 __beiscsi_log(phba, KERN_ERR, 987 "BS_%d : failed to get cid: available %u:%u\n", 988 cid_info->avlbl_cids, cid_info->cid_free); 989 return BE_INVALID_CID; 990 } 991 /* empty the slot */ 992 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID; 993 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp)) 994 cid_info->cid_alloc = 0; 995 cid_info->avlbl_cids--; 996 return cid; 997 } 998 999 /** 1000 * beiscsi_put_cid - Free the cid 1001 * @phba: The phba for which the cid is being freed 1002 * @cid: The cid to free 1003 */ 1004 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid) 1005 { 1006 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid); 1007 struct hwi_wrb_context *pwrb_context; 1008 struct hwi_controller *phwi_ctrlr; 1009 struct ulp_cid_info *cid_info; 1010 uint16_t cid_post_ulp; 1011 1012 phwi_ctrlr = phba->phwi_ctrlr; 1013 pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; 1014 cid_post_ulp = pwrb_context->ulp_num; 1015 1016 cid_info = phba->cid_array_info[cid_post_ulp]; 1017 /* fill only in empty slot */ 1018 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) { 1019 __beiscsi_log(phba, KERN_ERR, 1020 "BS_%d : failed to put cid %u: available %u:%u\n", 1021 cid, cid_info->avlbl_cids, cid_info->cid_free); 1022 return; 1023 } 1024 cid_info->cid_array[cid_info->cid_free++] = cid; 1025 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp)) 1026 cid_info->cid_free = 0; 1027 cid_info->avlbl_cids++; 1028 } 1029 1030 /** 1031 * beiscsi_free_ep - free endpoint 1032 * @ep: pointer to iscsi endpoint structure 1033 */ 1034 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep) 1035 { 1036 struct beiscsi_hba *phba = beiscsi_ep->phba; 1037 struct beiscsi_conn *beiscsi_conn; 1038 1039 beiscsi_put_cid(phba, beiscsi_ep->ep_cid); 1040 beiscsi_ep->phba = NULL; 1041 /* clear this to track freeing in beiscsi_ep_disconnect */ 1042 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL; 1043 1044 /** 1045 * Check if any connection resource allocated by driver 1046 * is to be freed.This case occurs when target redirection 1047 * or connection retry is done. 1048 **/ 1049 if (!beiscsi_ep->conn) 1050 return; 1051 1052 beiscsi_conn = beiscsi_ep->conn; 1053 /** 1054 * Break ep->conn link here so that completions after 1055 * this are ignored. 1056 */ 1057 beiscsi_ep->conn = NULL; 1058 if (beiscsi_conn->login_in_progress) { 1059 beiscsi_free_mgmt_task_handles(beiscsi_conn, 1060 beiscsi_conn->task); 1061 beiscsi_conn->login_in_progress = 0; 1062 } 1063 } 1064 1065 /** 1066 * beiscsi_open_conn - Ask FW to open a TCP connection 1067 * @ep: endpoint to be used 1068 * @src_addr: The source IP address 1069 * @dst_addr: The Destination IP address 1070 * 1071 * Asks the FW to open a TCP connection 1072 */ 1073 static int beiscsi_open_conn(struct iscsi_endpoint *ep, 1074 struct sockaddr *src_addr, 1075 struct sockaddr *dst_addr, int non_blocking) 1076 { 1077 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1078 struct beiscsi_hba *phba = beiscsi_ep->phba; 1079 struct tcp_connect_and_offload_out *ptcpcnct_out; 1080 struct be_dma_mem nonemb_cmd; 1081 unsigned int tag, req_memsize; 1082 int ret = -ENOMEM; 1083 1084 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1085 "BS_%d : In beiscsi_open_conn\n"); 1086 1087 beiscsi_ep->ep_cid = beiscsi_get_cid(phba); 1088 if (beiscsi_ep->ep_cid == BE_INVALID_CID) { 1089 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1090 "BS_%d : No free cid available\n"); 1091 return ret; 1092 } 1093 1094 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1095 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n", 1096 beiscsi_ep->ep_cid); 1097 1098 phba->ep_array[BE_GET_CRI_FROM_CID 1099 (beiscsi_ep->ep_cid)] = ep; 1100 1101 beiscsi_ep->cid_vld = 0; 1102 1103 if (is_chip_be2_be3r(phba)) 1104 req_memsize = sizeof(struct tcp_connect_and_offload_in); 1105 else 1106 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1); 1107 1108 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, 1109 req_memsize, 1110 &nonemb_cmd.dma); 1111 if (nonemb_cmd.va == NULL) { 1112 1113 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1114 "BS_%d : Failed to allocate memory for" 1115 " mgmt_open_connection\n"); 1116 1117 beiscsi_free_ep(beiscsi_ep); 1118 return -ENOMEM; 1119 } 1120 nonemb_cmd.size = req_memsize; 1121 memset(nonemb_cmd.va, 0, nonemb_cmd.size); 1122 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd); 1123 if (!tag) { 1124 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1125 "BS_%d : mgmt_open_connection Failed for cid=%d\n", 1126 beiscsi_ep->ep_cid); 1127 1128 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1129 nonemb_cmd.va, nonemb_cmd.dma); 1130 beiscsi_free_ep(beiscsi_ep); 1131 return -EAGAIN; 1132 } 1133 1134 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd); 1135 if (ret) { 1136 beiscsi_log(phba, KERN_ERR, 1137 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, 1138 "BS_%d : mgmt_open_connection Failed"); 1139 1140 if (ret != -EBUSY) 1141 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1142 nonemb_cmd.va, nonemb_cmd.dma); 1143 1144 beiscsi_free_ep(beiscsi_ep); 1145 return ret; 1146 } 1147 1148 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va; 1149 beiscsi_ep = ep->dd_data; 1150 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; 1151 beiscsi_ep->cid_vld = 1; 1152 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1153 "BS_%d : mgmt_open_connection Success\n"); 1154 1155 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1156 nonemb_cmd.va, nonemb_cmd.dma); 1157 return 0; 1158 } 1159 1160 /** 1161 * beiscsi_ep_connect - Ask chip to create TCP Conn 1162 * @scsi_host: Pointer to scsi_host structure 1163 * @dst_addr: The IP address of Target 1164 * @non_blocking: blocking or non-blocking call 1165 * 1166 * This routines first asks chip to create a connection and then allocates an EP 1167 */ 1168 struct iscsi_endpoint * 1169 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, 1170 int non_blocking) 1171 { 1172 struct beiscsi_hba *phba; 1173 struct beiscsi_endpoint *beiscsi_ep; 1174 struct iscsi_endpoint *ep; 1175 int ret; 1176 1177 if (!shost) { 1178 ret = -ENXIO; 1179 pr_err("beiscsi_ep_connect shost is NULL\n"); 1180 return ERR_PTR(ret); 1181 } 1182 1183 phba = iscsi_host_priv(shost); 1184 if (!beiscsi_hba_is_online(phba)) { 1185 ret = -EIO; 1186 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1187 "BS_%d : HBA in error 0x%lx\n", phba->state); 1188 return ERR_PTR(ret); 1189 } 1190 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) { 1191 ret = -EBUSY; 1192 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG, 1193 "BS_%d : The Adapter Port state is Down!!!\n"); 1194 return ERR_PTR(ret); 1195 } 1196 1197 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint)); 1198 if (!ep) { 1199 ret = -ENOMEM; 1200 return ERR_PTR(ret); 1201 } 1202 1203 beiscsi_ep = ep->dd_data; 1204 beiscsi_ep->phba = phba; 1205 beiscsi_ep->openiscsi_ep = ep; 1206 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking); 1207 if (ret) { 1208 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1209 "BS_%d : Failed in beiscsi_open_conn\n"); 1210 goto free_ep; 1211 } 1212 1213 return ep; 1214 1215 free_ep: 1216 iscsi_destroy_endpoint(ep); 1217 return ERR_PTR(ret); 1218 } 1219 1220 /** 1221 * beiscsi_ep_poll - Poll to see if connection is established 1222 * @ep: endpoint to be used 1223 * @timeout_ms: timeout specified in millisecs 1224 * 1225 * Poll to see if TCP connection established 1226 */ 1227 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) 1228 { 1229 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1230 1231 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1232 "BS_%d : In beiscsi_ep_poll\n"); 1233 1234 if (beiscsi_ep->cid_vld == 1) 1235 return 1; 1236 else 1237 return 0; 1238 } 1239 1240 /** 1241 * beiscsi_flush_cq()- Flush the CQ created. 1242 * @phba: ptr device priv structure. 1243 * 1244 * Before the connection resource are freed flush 1245 * all the CQ enteries 1246 **/ 1247 static void beiscsi_flush_cq(struct beiscsi_hba *phba) 1248 { 1249 uint16_t i; 1250 struct be_eq_obj *pbe_eq; 1251 struct hwi_controller *phwi_ctrlr; 1252 struct hwi_context_memory *phwi_context; 1253 1254 phwi_ctrlr = phba->phwi_ctrlr; 1255 phwi_context = phwi_ctrlr->phwi_ctxt; 1256 1257 for (i = 0; i < phba->num_cpus; i++) { 1258 pbe_eq = &phwi_context->be_eq[i]; 1259 irq_poll_disable(&pbe_eq->iopoll); 1260 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC); 1261 irq_poll_enable(&pbe_eq->iopoll); 1262 } 1263 } 1264 1265 /** 1266 * beiscsi_close_conn - Upload the connection 1267 * @ep: The iscsi endpoint 1268 * @flag: The type of connection closure 1269 */ 1270 static int beiscsi_close_conn(struct beiscsi_endpoint *beiscsi_ep, int flag) 1271 { 1272 int ret = 0; 1273 unsigned int tag; 1274 struct beiscsi_hba *phba = beiscsi_ep->phba; 1275 1276 tag = mgmt_upload_connection(phba, beiscsi_ep->ep_cid, flag); 1277 if (!tag) { 1278 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1279 "BS_%d : upload failed for cid 0x%x\n", 1280 beiscsi_ep->ep_cid); 1281 1282 ret = -EAGAIN; 1283 } 1284 1285 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1286 1287 /* Flush the CQ entries */ 1288 beiscsi_flush_cq(phba); 1289 1290 return ret; 1291 } 1292 1293 /** 1294 * beiscsi_ep_disconnect - Tears down the TCP connection 1295 * @ep: endpoint to be used 1296 * 1297 * Tears down the TCP connection 1298 */ 1299 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) 1300 { 1301 struct beiscsi_conn *beiscsi_conn; 1302 struct beiscsi_endpoint *beiscsi_ep; 1303 struct beiscsi_hba *phba; 1304 unsigned int tag; 1305 uint8_t mgmt_invalidate_flag, tcp_upload_flag; 1306 unsigned short savecfg_flag = CMD_ISCSI_SESSION_SAVE_CFG_ON_FLASH; 1307 uint16_t cri_index; 1308 1309 beiscsi_ep = ep->dd_data; 1310 phba = beiscsi_ep->phba; 1311 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1312 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n", 1313 beiscsi_ep->ep_cid); 1314 1315 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 1316 if (!phba->ep_array[cri_index]) { 1317 __beiscsi_log(phba, KERN_ERR, 1318 "BS_%d : ep_array at %u cid %u empty\n", 1319 cri_index, 1320 beiscsi_ep->ep_cid); 1321 return; 1322 } 1323 1324 if (beiscsi_ep->conn) { 1325 beiscsi_conn = beiscsi_ep->conn; 1326 iscsi_suspend_queue(beiscsi_conn->conn); 1327 mgmt_invalidate_flag = ~BEISCSI_NO_RST_ISSUE; 1328 tcp_upload_flag = CONNECTION_UPLOAD_GRACEFUL; 1329 } else { 1330 mgmt_invalidate_flag = BEISCSI_NO_RST_ISSUE; 1331 tcp_upload_flag = CONNECTION_UPLOAD_ABORT; 1332 } 1333 1334 if (!beiscsi_hba_is_online(phba)) { 1335 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1336 "BS_%d : HBA in error 0x%lx\n", phba->state); 1337 goto free_ep; 1338 } 1339 1340 tag = mgmt_invalidate_connection(phba, beiscsi_ep, 1341 beiscsi_ep->ep_cid, 1342 mgmt_invalidate_flag, 1343 savecfg_flag); 1344 if (!tag) { 1345 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1346 "BS_%d : mgmt_invalidate_connection Failed for cid=%d\n", 1347 beiscsi_ep->ep_cid); 1348 } 1349 1350 beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1351 beiscsi_close_conn(beiscsi_ep, tcp_upload_flag); 1352 free_ep: 1353 msleep(BEISCSI_LOGOUT_SYNC_DELAY); 1354 beiscsi_free_ep(beiscsi_ep); 1355 if (!phba->conn_table[cri_index]) 1356 __beiscsi_log(phba, KERN_ERR, 1357 "BS_%d : conn_table empty at %u: cid %u\n", 1358 cri_index, 1359 beiscsi_ep->ep_cid); 1360 phba->conn_table[cri_index] = NULL; 1361 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); 1362 } 1363 1364 umode_t beiscsi_attr_is_visible(int param_type, int param) 1365 { 1366 switch (param_type) { 1367 case ISCSI_NET_PARAM: 1368 switch (param) { 1369 case ISCSI_NET_PARAM_IFACE_ENABLE: 1370 case ISCSI_NET_PARAM_IPV4_ADDR: 1371 case ISCSI_NET_PARAM_IPV4_SUBNET: 1372 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 1373 case ISCSI_NET_PARAM_IPV4_GW: 1374 case ISCSI_NET_PARAM_IPV6_ADDR: 1375 case ISCSI_NET_PARAM_VLAN_ID: 1376 case ISCSI_NET_PARAM_VLAN_PRIORITY: 1377 case ISCSI_NET_PARAM_VLAN_ENABLED: 1378 return S_IRUGO; 1379 default: 1380 return 0; 1381 } 1382 case ISCSI_HOST_PARAM: 1383 switch (param) { 1384 case ISCSI_HOST_PARAM_HWADDRESS: 1385 case ISCSI_HOST_PARAM_INITIATOR_NAME: 1386 case ISCSI_HOST_PARAM_PORT_STATE: 1387 case ISCSI_HOST_PARAM_PORT_SPEED: 1388 return S_IRUGO; 1389 default: 1390 return 0; 1391 } 1392 case ISCSI_PARAM: 1393 switch (param) { 1394 case ISCSI_PARAM_MAX_RECV_DLENGTH: 1395 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 1396 case ISCSI_PARAM_HDRDGST_EN: 1397 case ISCSI_PARAM_DATADGST_EN: 1398 case ISCSI_PARAM_CONN_ADDRESS: 1399 case ISCSI_PARAM_CONN_PORT: 1400 case ISCSI_PARAM_EXP_STATSN: 1401 case ISCSI_PARAM_PERSISTENT_ADDRESS: 1402 case ISCSI_PARAM_PERSISTENT_PORT: 1403 case ISCSI_PARAM_PING_TMO: 1404 case ISCSI_PARAM_RECV_TMO: 1405 case ISCSI_PARAM_INITIAL_R2T_EN: 1406 case ISCSI_PARAM_MAX_R2T: 1407 case ISCSI_PARAM_IMM_DATA_EN: 1408 case ISCSI_PARAM_FIRST_BURST: 1409 case ISCSI_PARAM_MAX_BURST: 1410 case ISCSI_PARAM_PDU_INORDER_EN: 1411 case ISCSI_PARAM_DATASEQ_INORDER_EN: 1412 case ISCSI_PARAM_ERL: 1413 case ISCSI_PARAM_TARGET_NAME: 1414 case ISCSI_PARAM_TPGT: 1415 case ISCSI_PARAM_USERNAME: 1416 case ISCSI_PARAM_PASSWORD: 1417 case ISCSI_PARAM_USERNAME_IN: 1418 case ISCSI_PARAM_PASSWORD_IN: 1419 case ISCSI_PARAM_FAST_ABORT: 1420 case ISCSI_PARAM_ABORT_TMO: 1421 case ISCSI_PARAM_LU_RESET_TMO: 1422 case ISCSI_PARAM_IFACE_NAME: 1423 case ISCSI_PARAM_INITIATOR_NAME: 1424 return S_IRUGO; 1425 default: 1426 return 0; 1427 } 1428 } 1429 1430 return 0; 1431 } 1432