1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * This file is part of the Emulex Linux Device Driver for Enterprise iSCSI 4 * Host Bus Adapters. Refer to the README file included with this package 5 * for driver version and adapter compatibility. 6 * 7 * Copyright (c) 2018 Broadcom. All Rights Reserved. 8 * The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries. 9 * 10 * Contact Information: 11 * linux-drivers@broadcom.com 12 */ 13 14#include <scsi/libiscsi.h> 15#include <scsi/scsi_transport_iscsi.h> 16#include <scsi/scsi_transport.h> 17#include <scsi/scsi_cmnd.h> 18#include <scsi/scsi_device.h> 19#include <scsi/scsi_host.h> 20#include <scsi/scsi_netlink.h> 21#include <net/netlink.h> 22#include <scsi/scsi.h> 23 24#include "be_iscsi.h" 25 26extern struct iscsi_transport beiscsi_iscsi_transport; 27 28/** 29 * beiscsi_session_create - creates a new iscsi session 30 * @ep: pointer to iscsi ep 31 * @cmds_max: max commands supported 32 * @qdepth: max queue depth supported 33 * @initial_cmdsn: initial iscsi CMDSN 34 */ 35struct iscsi_cls_session *beiscsi_session_create(struct iscsi_endpoint *ep, 36 u16 cmds_max, 37 u16 qdepth, 38 u32 initial_cmdsn) 39{ 40 struct Scsi_Host *shost; 41 struct beiscsi_endpoint *beiscsi_ep; 42 struct iscsi_cls_session *cls_session; 43 struct beiscsi_hba *phba; 44 struct iscsi_session *sess; 45 struct beiscsi_session *beiscsi_sess; 46 struct beiscsi_io_task *io_task; 47 48 49 if (!ep) { 50 pr_err("beiscsi_session_create: invalid ep\n"); 51 return NULL; 52 } 53 beiscsi_ep = ep->dd_data; 54 phba = beiscsi_ep->phba; 55 56 if (!beiscsi_hba_is_online(phba)) { 57 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 58 "BS_%d : HBA in error 0x%lx\n", phba->state); 59 return NULL; 60 } 61 62 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 63 "BS_%d : In beiscsi_session_create\n"); 64 if (cmds_max > beiscsi_ep->phba->params.wrbs_per_cxn) { 65 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 66 "BS_%d : Cannot handle %d cmds." 67 "Max cmds per session supported is %d. Using %d." 68 "\n", cmds_max, 69 beiscsi_ep->phba->params.wrbs_per_cxn, 70 beiscsi_ep->phba->params.wrbs_per_cxn); 71 72 cmds_max = beiscsi_ep->phba->params.wrbs_per_cxn; 73 } 74 75 shost = phba->shost; 76 cls_session = iscsi_session_setup(&beiscsi_iscsi_transport, 77 shost, cmds_max, 78 sizeof(*beiscsi_sess), 79 sizeof(*io_task), 80 initial_cmdsn, ISCSI_MAX_TARGET); 81 if (!cls_session) 82 return NULL; 83 sess = cls_session->dd_data; 84 beiscsi_sess = sess->dd_data; 85 beiscsi_sess->bhs_pool = dma_pool_create("beiscsi_bhs_pool", 86 &phba->pcidev->dev, 87 sizeof(struct be_cmd_bhs), 88 64, 0); 89 if (!beiscsi_sess->bhs_pool) 90 goto destroy_sess; 91 92 return cls_session; 93destroy_sess: 94 iscsi_session_teardown(cls_session); 95 return NULL; 96} 97 98/** 99 * beiscsi_session_destroy - destroys iscsi session 100 * @cls_session: pointer to iscsi cls session 101 * 102 * Destroys iSCSI session instance and releases 103 * resources allocated for it. 104 */ 105void beiscsi_session_destroy(struct iscsi_cls_session *cls_session) 106{ 107 struct iscsi_session *sess = cls_session->dd_data; 108 struct beiscsi_session *beiscsi_sess = sess->dd_data; 109 110 printk(KERN_INFO "In beiscsi_session_destroy\n"); 111 dma_pool_destroy(beiscsi_sess->bhs_pool); 112 iscsi_session_teardown(cls_session); 113} 114 115/** 116 * beiscsi_session_fail(): Closing session with appropriate error 117 * @cls_session: ptr to session 118 **/ 119void beiscsi_session_fail(struct iscsi_cls_session *cls_session) 120{ 121 iscsi_session_failure(cls_session->dd_data, ISCSI_ERR_CONN_FAILED); 122} 123 124 125/** 126 * beiscsi_conn_create - create an instance of iscsi connection 127 * @cls_session: ptr to iscsi_cls_session 128 * @cid: iscsi cid 129 */ 130struct iscsi_cls_conn * 131beiscsi_conn_create(struct iscsi_cls_session *cls_session, u32 cid) 132{ 133 struct beiscsi_hba *phba; 134 struct Scsi_Host *shost; 135 struct iscsi_cls_conn *cls_conn; 136 struct beiscsi_conn *beiscsi_conn; 137 struct iscsi_conn *conn; 138 struct iscsi_session *sess; 139 struct beiscsi_session *beiscsi_sess; 140 141 shost = iscsi_session_to_shost(cls_session); 142 phba = iscsi_host_priv(shost); 143 144 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 145 "BS_%d : In beiscsi_conn_create ,cid" 146 "from iscsi layer=%d\n", cid); 147 148 cls_conn = iscsi_conn_setup(cls_session, sizeof(*beiscsi_conn), cid); 149 if (!cls_conn) 150 return NULL; 151 152 conn = cls_conn->dd_data; 153 beiscsi_conn = conn->dd_data; 154 beiscsi_conn->ep = NULL; 155 beiscsi_conn->phba = phba; 156 beiscsi_conn->conn = conn; 157 sess = cls_session->dd_data; 158 beiscsi_sess = sess->dd_data; 159 beiscsi_conn->beiscsi_sess = beiscsi_sess; 160 return cls_conn; 161} 162 163/** 164 * beiscsi_conn_bind - Binds iscsi session/connection with TCP connection 165 * @cls_session: pointer to iscsi cls session 166 * @cls_conn: pointer to iscsi cls conn 167 * @transport_fd: EP handle(64 bit) 168 * @is_leading: indicate if this is the session leading connection (MCS) 169 * 170 * This function binds the TCP Conn with iSCSI Connection and Session. 171 */ 172int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, 173 struct iscsi_cls_conn *cls_conn, 174 u64 transport_fd, int is_leading) 175{ 176 struct iscsi_conn *conn = cls_conn->dd_data; 177 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 178 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 179 struct beiscsi_hba *phba = iscsi_host_priv(shost); 180 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr; 181 struct hwi_wrb_context *pwrb_context; 182 struct beiscsi_endpoint *beiscsi_ep; 183 struct iscsi_endpoint *ep; 184 uint16_t cri_index; 185 int rc = 0; 186 187 ep = iscsi_lookup_endpoint(transport_fd); 188 if (!ep) 189 return -EINVAL; 190 191 beiscsi_ep = ep->dd_data; 192 193 if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) { 194 rc = -EINVAL; 195 goto put_ep; 196 } 197 198 if (beiscsi_ep->phba != phba) { 199 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 200 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", 201 beiscsi_ep->phba, phba); 202 rc = -EEXIST; 203 goto put_ep; 204 } 205 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 206 if (phba->conn_table[cri_index]) { 207 if (beiscsi_conn != phba->conn_table[cri_index] || 208 beiscsi_ep != phba->conn_table[cri_index]->ep) { 209 __beiscsi_log(phba, KERN_ERR, 210 "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n", 211 cri_index, 212 beiscsi_ep->ep_cid, 213 beiscsi_conn, 214 phba->conn_table[cri_index]); 215 rc = -EINVAL; 216 goto put_ep; 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 234put_ep: 235 iscsi_put_endpoint(ep); 236 return rc; 237} 238 239static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba) 240{ 241 if (phba->ipv4_iface) 242 return 0; 243 244 phba->ipv4_iface = iscsi_create_iface(phba->shost, 245 &beiscsi_iscsi_transport, 246 ISCSI_IFACE_TYPE_IPV4, 247 0, 0); 248 if (!phba->ipv4_iface) { 249 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 250 "BS_%d : Could not " 251 "create default IPv4 address.\n"); 252 return -ENODEV; 253 } 254 255 return 0; 256} 257 258static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba) 259{ 260 if (phba->ipv6_iface) 261 return 0; 262 263 phba->ipv6_iface = iscsi_create_iface(phba->shost, 264 &beiscsi_iscsi_transport, 265 ISCSI_IFACE_TYPE_IPV6, 266 0, 0); 267 if (!phba->ipv6_iface) { 268 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 269 "BS_%d : Could not " 270 "create default IPv6 address.\n"); 271 return -ENODEV; 272 } 273 274 return 0; 275} 276 277void beiscsi_iface_create_default(struct beiscsi_hba *phba) 278{ 279 struct be_cmd_get_if_info_resp *if_info; 280 281 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) { 282 beiscsi_iface_create_ipv4(phba); 283 kfree(if_info); 284 } 285 286 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) { 287 beiscsi_iface_create_ipv6(phba); 288 kfree(if_info); 289 } 290} 291 292void beiscsi_iface_destroy_default(struct beiscsi_hba *phba) 293{ 294 if (phba->ipv6_iface) { 295 iscsi_destroy_iface(phba->ipv6_iface); 296 phba->ipv6_iface = NULL; 297 } 298 if (phba->ipv4_iface) { 299 iscsi_destroy_iface(phba->ipv4_iface); 300 phba->ipv4_iface = NULL; 301 } 302} 303 304/** 305 * beiscsi_set_vlan_tag()- Set the VLAN TAG 306 * @shost: Scsi Host for the driver instance 307 * @iface_param: Interface paramters 308 * 309 * Set the VLAN TAG for the adapter or disable 310 * the VLAN config 311 * 312 * returns 313 * Success: 0 314 * Failure: Non-Zero Value 315 **/ 316static int 317beiscsi_iface_config_vlan(struct Scsi_Host *shost, 318 struct iscsi_iface_param_info *iface_param) 319{ 320 struct beiscsi_hba *phba = iscsi_host_priv(shost); 321 int ret = -EPERM; 322 323 switch (iface_param->param) { 324 case ISCSI_NET_PARAM_VLAN_ENABLED: 325 ret = 0; 326 if (iface_param->value[0] != ISCSI_VLAN_ENABLE) 327 ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE); 328 break; 329 case ISCSI_NET_PARAM_VLAN_TAG: 330 ret = beiscsi_if_set_vlan(phba, 331 *((uint16_t *)iface_param->value)); 332 break; 333 } 334 return ret; 335} 336 337 338static int 339beiscsi_iface_config_ipv4(struct Scsi_Host *shost, 340 struct iscsi_iface_param_info *info, 341 void *data, uint32_t dt_len) 342{ 343 struct beiscsi_hba *phba = iscsi_host_priv(shost); 344 u8 *ip = NULL, *subnet = NULL, *gw; 345 struct nlattr *nla; 346 int ret = -EPERM; 347 348 /* Check the param */ 349 switch (info->param) { 350 case ISCSI_NET_PARAM_IFACE_ENABLE: 351 if (info->value[0] == ISCSI_IFACE_ENABLE) 352 ret = beiscsi_iface_create_ipv4(phba); 353 else { 354 iscsi_destroy_iface(phba->ipv4_iface); 355 phba->ipv4_iface = NULL; 356 } 357 break; 358 case ISCSI_NET_PARAM_IPV4_GW: 359 gw = info->value; 360 ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw); 361 break; 362 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 363 if (info->value[0] == ISCSI_BOOTPROTO_DHCP) 364 ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4); 365 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC) 366 /* release DHCP IP address */ 367 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 368 NULL, NULL); 369 else 370 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 371 "BS_%d : Invalid BOOTPROTO: %d\n", 372 info->value[0]); 373 break; 374 case ISCSI_NET_PARAM_IPV4_ADDR: 375 ip = info->value; 376 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); 377 if (nla) { 378 info = nla_data(nla); 379 subnet = info->value; 380 } 381 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 382 ip, subnet); 383 break; 384 case ISCSI_NET_PARAM_IPV4_SUBNET: 385 /* 386 * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP 387 * and subnet both. Find IP to be applied for this subnet. 388 */ 389 subnet = info->value; 390 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); 391 if (nla) { 392 info = nla_data(nla); 393 ip = info->value; 394 } 395 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 396 ip, subnet); 397 break; 398 } 399 400 return ret; 401} 402 403static int 404beiscsi_iface_config_ipv6(struct Scsi_Host *shost, 405 struct iscsi_iface_param_info *iface_param, 406 void *data, uint32_t dt_len) 407{ 408 struct beiscsi_hba *phba = iscsi_host_priv(shost); 409 int ret = -EPERM; 410 411 switch (iface_param->param) { 412 case ISCSI_NET_PARAM_IFACE_ENABLE: 413 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) 414 ret = beiscsi_iface_create_ipv6(phba); 415 else { 416 iscsi_destroy_iface(phba->ipv6_iface); 417 phba->ipv6_iface = NULL; 418 } 419 break; 420 case ISCSI_NET_PARAM_IPV6_ADDR: 421 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6, 422 iface_param->value, NULL); 423 break; 424 } 425 426 return ret; 427} 428 429int beiscsi_iface_set_param(struct Scsi_Host *shost, 430 void *data, uint32_t dt_len) 431{ 432 struct iscsi_iface_param_info *iface_param = NULL; 433 struct beiscsi_hba *phba = iscsi_host_priv(shost); 434 struct nlattr *attrib; 435 uint32_t rm_len = dt_len; 436 int ret; 437 438 if (!beiscsi_hba_is_online(phba)) { 439 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 440 "BS_%d : HBA in error 0x%lx\n", phba->state); 441 return -EBUSY; 442 } 443 444 /* update interface_handle */ 445 ret = beiscsi_if_get_handle(phba); 446 if (ret) { 447 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 448 "BS_%d : Getting Interface Handle Failed\n"); 449 return ret; 450 } 451 452 nla_for_each_attr(attrib, data, dt_len, rm_len) { 453 /* ignore nla_type as it is never used */ 454 if (nla_len(attrib) < sizeof(*iface_param)) 455 return -EINVAL; 456 457 iface_param = nla_data(attrib); 458 459 if (iface_param->param_type != ISCSI_NET_PARAM) 460 continue; 461 462 /* 463 * BE2ISCSI only supports 1 interface 464 */ 465 if (iface_param->iface_num) { 466 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 467 "BS_%d : Invalid iface_num %d." 468 "Only iface_num 0 is supported.\n", 469 iface_param->iface_num); 470 471 return -EINVAL; 472 } 473 474 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 475 "BS_%d : %s.0 set param %d", 476 (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ? 477 "ipv4" : "ipv6", iface_param->param); 478 479 ret = -EPERM; 480 switch (iface_param->param) { 481 case ISCSI_NET_PARAM_VLAN_ENABLED: 482 case ISCSI_NET_PARAM_VLAN_TAG: 483 ret = beiscsi_iface_config_vlan(shost, iface_param); 484 break; 485 default: 486 switch (iface_param->iface_type) { 487 case ISCSI_IFACE_TYPE_IPV4: 488 ret = beiscsi_iface_config_ipv4(shost, 489 iface_param, 490 data, dt_len); 491 break; 492 case ISCSI_IFACE_TYPE_IPV6: 493 ret = beiscsi_iface_config_ipv6(shost, 494 iface_param, 495 data, dt_len); 496 break; 497 } 498 } 499 500 if (ret == -EPERM) { 501 __beiscsi_log(phba, KERN_ERR, 502 "BS_%d : %s.0 set param %d not permitted", 503 (iface_param->iface_type == 504 ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6", 505 iface_param->param); 506 ret = 0; 507 } 508 if (ret) 509 break; 510 } 511 512 return ret; 513} 514 515static int __beiscsi_iface_get_param(struct beiscsi_hba *phba, 516 struct iscsi_iface *iface, 517 int param, char *buf) 518{ 519 struct be_cmd_get_if_info_resp *if_info; 520 int len, ip_type = BEISCSI_IP_TYPE_V4; 521 522 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 523 ip_type = BEISCSI_IP_TYPE_V6; 524 525 len = beiscsi_if_get_info(phba, ip_type, &if_info); 526 if (len) 527 return len; 528 529 switch (param) { 530 case ISCSI_NET_PARAM_IPV4_ADDR: 531 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr); 532 break; 533 case ISCSI_NET_PARAM_IPV6_ADDR: 534 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr); 535 break; 536 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 537 if (!if_info->dhcp_state) 538 len = sprintf(buf, "static\n"); 539 else 540 len = sprintf(buf, "dhcp\n"); 541 break; 542 case ISCSI_NET_PARAM_IPV4_SUBNET: 543 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask); 544 break; 545 case ISCSI_NET_PARAM_VLAN_ENABLED: 546 len = sprintf(buf, "%s\n", 547 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ? 548 "disable" : "enable"); 549 break; 550 case ISCSI_NET_PARAM_VLAN_ID: 551 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 552 len = -EINVAL; 553 else 554 len = sprintf(buf, "%d\n", 555 (if_info->vlan_priority & 556 ISCSI_MAX_VLAN_ID)); 557 break; 558 case ISCSI_NET_PARAM_VLAN_PRIORITY: 559 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 560 len = -EINVAL; 561 else 562 len = sprintf(buf, "%d\n", 563 ((if_info->vlan_priority >> 13) & 564 ISCSI_MAX_VLAN_PRIORITY)); 565 break; 566 default: 567 WARN_ON(1); 568 } 569 570 kfree(if_info); 571 return len; 572} 573 574int beiscsi_iface_get_param(struct iscsi_iface *iface, 575 enum iscsi_param_type param_type, 576 int param, char *buf) 577{ 578 struct Scsi_Host *shost = iscsi_iface_to_shost(iface); 579 struct beiscsi_hba *phba = iscsi_host_priv(shost); 580 struct be_cmd_get_def_gateway_resp gateway; 581 int len = -EPERM; 582 583 if (param_type != ISCSI_NET_PARAM) 584 return 0; 585 if (!beiscsi_hba_is_online(phba)) { 586 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 587 "BS_%d : HBA in error 0x%lx\n", phba->state); 588 return -EBUSY; 589 } 590 591 switch (param) { 592 case ISCSI_NET_PARAM_IPV4_ADDR: 593 case ISCSI_NET_PARAM_IPV4_SUBNET: 594 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 595 case ISCSI_NET_PARAM_IPV6_ADDR: 596 case ISCSI_NET_PARAM_VLAN_ENABLED: 597 case ISCSI_NET_PARAM_VLAN_ID: 598 case ISCSI_NET_PARAM_VLAN_PRIORITY: 599 len = __beiscsi_iface_get_param(phba, iface, param, buf); 600 break; 601 case ISCSI_NET_PARAM_IFACE_ENABLE: 602 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) 603 len = sprintf(buf, "%s\n", 604 phba->ipv4_iface ? "enable" : "disable"); 605 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 606 len = sprintf(buf, "%s\n", 607 phba->ipv6_iface ? "enable" : "disable"); 608 break; 609 case ISCSI_NET_PARAM_IPV4_GW: 610 memset(&gateway, 0, sizeof(gateway)); 611 len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway); 612 if (!len) 613 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr); 614 break; 615 } 616 617 return len; 618} 619 620/** 621 * beiscsi_ep_get_param - get the iscsi parameter 622 * @ep: pointer to iscsi ep 623 * @param: parameter type identifier 624 * @buf: buffer pointer 625 * 626 * returns iscsi parameter 627 */ 628int beiscsi_ep_get_param(struct iscsi_endpoint *ep, 629 enum iscsi_param param, char *buf) 630{ 631 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 632 int len; 633 634 beiscsi_log(beiscsi_ep->phba, KERN_INFO, 635 BEISCSI_LOG_CONFIG, 636 "BS_%d : In beiscsi_ep_get_param," 637 " param= %d\n", param); 638 639 switch (param) { 640 case ISCSI_PARAM_CONN_PORT: 641 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport); 642 break; 643 case ISCSI_PARAM_CONN_ADDRESS: 644 if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4) 645 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); 646 else 647 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); 648 break; 649 default: 650 len = -EPERM; 651 } 652 return len; 653} 654 655int beiscsi_set_param(struct iscsi_cls_conn *cls_conn, 656 enum iscsi_param param, char *buf, int buflen) 657{ 658 struct iscsi_conn *conn = cls_conn->dd_data; 659 struct iscsi_session *session = conn->session; 660 struct beiscsi_hba *phba = NULL; 661 int ret; 662 663 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 664 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 665 "BS_%d : In beiscsi_conn_set_param," 666 " param= %d\n", param); 667 668 ret = iscsi_set_param(cls_conn, param, buf, buflen); 669 if (ret) 670 return ret; 671 /* 672 * If userspace tried to set the value to higher than we can 673 * support override here. 674 */ 675 switch (param) { 676 case ISCSI_PARAM_FIRST_BURST: 677 if (session->first_burst > 8192) 678 session->first_burst = 8192; 679 break; 680 case ISCSI_PARAM_MAX_RECV_DLENGTH: 681 if (conn->max_recv_dlength > 65536) 682 conn->max_recv_dlength = 65536; 683 break; 684 case ISCSI_PARAM_MAX_BURST: 685 if (session->max_burst > 262144) 686 session->max_burst = 262144; 687 break; 688 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 689 if (conn->max_xmit_dlength > 65536) 690 conn->max_xmit_dlength = 65536; 691 fallthrough; 692 default: 693 return 0; 694 } 695 696 return 0; 697} 698 699/** 700 * beiscsi_get_port_state - Get the Port State 701 * @shost : pointer to scsi_host structure 702 * 703 */ 704static void beiscsi_get_port_state(struct Scsi_Host *shost) 705{ 706 struct beiscsi_hba *phba = iscsi_host_priv(shost); 707 struct iscsi_cls_host *ihost = shost->shost_data; 708 709 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ? 710 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN; 711} 712 713/** 714 * beiscsi_get_port_speed - Get the Port Speed from Adapter 715 * @shost : pointer to scsi_host structure 716 * 717 */ 718static void beiscsi_get_port_speed(struct Scsi_Host *shost) 719{ 720 struct beiscsi_hba *phba = iscsi_host_priv(shost); 721 struct iscsi_cls_host *ihost = shost->shost_data; 722 723 switch (phba->port_speed) { 724 case BE2ISCSI_LINK_SPEED_10MBPS: 725 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS; 726 break; 727 case BE2ISCSI_LINK_SPEED_100MBPS: 728 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS; 729 break; 730 case BE2ISCSI_LINK_SPEED_1GBPS: 731 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS; 732 break; 733 case BE2ISCSI_LINK_SPEED_10GBPS: 734 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS; 735 break; 736 case BE2ISCSI_LINK_SPEED_25GBPS: 737 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS; 738 break; 739 case BE2ISCSI_LINK_SPEED_40GBPS: 740 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS; 741 break; 742 default: 743 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN; 744 } 745} 746 747/** 748 * beiscsi_get_host_param - get the iscsi parameter 749 * @shost: pointer to scsi_host structure 750 * @param: parameter type identifier 751 * @buf: buffer pointer 752 * 753 */ 754int beiscsi_get_host_param(struct Scsi_Host *shost, 755 enum iscsi_host_param param, char *buf) 756{ 757 struct beiscsi_hba *phba = iscsi_host_priv(shost); 758 int status = 0; 759 760 if (!beiscsi_hba_is_online(phba)) { 761 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 762 "BS_%d : HBA in error 0x%lx\n", phba->state); 763 return 0; 764 } 765 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 766 "BS_%d : In beiscsi_get_host_param, param = %d\n", param); 767 768 switch (param) { 769 case ISCSI_HOST_PARAM_HWADDRESS: 770 status = beiscsi_get_macaddr(buf, phba); 771 if (status < 0) { 772 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 773 "BS_%d : beiscsi_get_macaddr Failed\n"); 774 return 0; 775 } 776 break; 777 case ISCSI_HOST_PARAM_INITIATOR_NAME: 778 /* try fetching user configured name first */ 779 status = beiscsi_get_initiator_name(phba, buf, true); 780 if (status < 0) { 781 status = beiscsi_get_initiator_name(phba, buf, false); 782 if (status < 0) { 783 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 784 "BS_%d : Retrieving Initiator Name Failed\n"); 785 status = 0; 786 } 787 } 788 break; 789 case ISCSI_HOST_PARAM_PORT_STATE: 790 beiscsi_get_port_state(shost); 791 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost)); 792 break; 793 case ISCSI_HOST_PARAM_PORT_SPEED: 794 beiscsi_get_port_speed(shost); 795 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost)); 796 break; 797 default: 798 return iscsi_host_get_param(shost, param, buf); 799 } 800 return status; 801} 802 803int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba) 804{ 805 struct be_cmd_get_nic_conf_resp resp; 806 int rc; 807 808 if (phba->mac_addr_set) 809 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 810 811 memset(&resp, 0, sizeof(resp)); 812 rc = mgmt_get_nic_conf(phba, &resp); 813 if (rc) 814 return rc; 815 816 phba->mac_addr_set = true; 817 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN); 818 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 819} 820 821/** 822 * beiscsi_conn_get_stats - get the iscsi stats 823 * @cls_conn: pointer to iscsi cls conn 824 * @stats: pointer to iscsi_stats structure 825 * 826 * returns iscsi stats 827 */ 828void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, 829 struct iscsi_stats *stats) 830{ 831 struct iscsi_conn *conn = cls_conn->dd_data; 832 struct beiscsi_hba *phba = NULL; 833 834 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 835 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 836 "BS_%d : In beiscsi_conn_get_stats\n"); 837 838 stats->txdata_octets = conn->txdata_octets; 839 stats->rxdata_octets = conn->rxdata_octets; 840 stats->dataout_pdus = conn->dataout_pdus_cnt; 841 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; 842 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; 843 stats->datain_pdus = conn->datain_pdus_cnt; 844 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; 845 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; 846 stats->r2t_pdus = conn->r2t_pdus_cnt; 847 stats->digest_err = 0; 848 stats->timeout_err = 0; 849 stats->custom_length = 1; 850 strcpy(stats->custom[0].desc, "eh_abort_cnt"); 851 stats->custom[0].value = conn->eh_abort_cnt; 852} 853 854/** 855 * beiscsi_set_params_for_offld - get the parameters for offload 856 * @beiscsi_conn: pointer to beiscsi_conn 857 * @params: pointer to offload_params structure 858 */ 859static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn, 860 struct beiscsi_offload_params *params) 861{ 862 struct iscsi_conn *conn = beiscsi_conn->conn; 863 struct iscsi_session *session = conn->session; 864 865 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length, 866 params, session->max_burst); 867 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 868 max_send_data_segment_length, params, 869 conn->max_xmit_dlength); 870 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length, 871 params, session->first_burst); 872 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params, 873 session->erl); 874 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params, 875 conn->datadgst_en); 876 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params, 877 conn->hdrdgst_en); 878 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params, 879 session->initial_r2t_en); 880 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params, 881 session->imm_data_en); 882 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 883 data_seq_inorder, params, 884 session->dataseq_inorder_en); 885 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 886 pdu_seq_inorder, params, 887 session->pdu_inorder_en); 888 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params, 889 session->max_r2t); 890 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params, 891 (conn->exp_statsn - 1)); 892 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 893 max_recv_data_segment_length, params, 894 conn->max_recv_dlength); 895 896} 897 898/** 899 * beiscsi_conn_start - offload of session to chip 900 * @cls_conn: pointer to beiscsi_conn 901 */ 902int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn) 903{ 904 struct iscsi_conn *conn = cls_conn->dd_data; 905 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 906 struct beiscsi_endpoint *beiscsi_ep; 907 struct beiscsi_offload_params params; 908 struct beiscsi_hba *phba; 909 910 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 911 912 if (!beiscsi_hba_is_online(phba)) { 913 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 914 "BS_%d : HBA in error 0x%lx\n", phba->state); 915 return -EBUSY; 916 } 917 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 918 "BS_%d : In beiscsi_conn_start\n"); 919 920 memset(¶ms, 0, sizeof(struct beiscsi_offload_params)); 921 beiscsi_ep = beiscsi_conn->ep; 922 if (!beiscsi_ep) 923 beiscsi_log(beiscsi_conn->phba, KERN_ERR, 924 BEISCSI_LOG_CONFIG, 925 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n"); 926 927 beiscsi_conn->login_in_progress = 0; 928 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms); 929 beiscsi_offload_connection(beiscsi_conn, ¶ms); 930 iscsi_conn_start(cls_conn); 931 return 0; 932} 933 934/** 935 * beiscsi_get_cid - Allocate a cid 936 * @phba: The phba instance 937 */ 938static int beiscsi_get_cid(struct beiscsi_hba *phba) 939{ 940 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1; 941 unsigned short cid, cid_from_ulp; 942 struct ulp_cid_info *cid_info; 943 944 /* Find the ULP which has more CID available */ 945 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ? 946 BEISCSI_ULP0_AVLBL_CID(phba) : 0; 947 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ? 948 BEISCSI_ULP1_AVLBL_CID(phba) : 0; 949 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ? 950 BEISCSI_ULP0 : BEISCSI_ULP1; 951 /** 952 * If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp 953 * is ZERO for both, ULP 1 is returned. 954 * Check if ULP is loaded before getting new CID. 955 */ 956 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) 957 return BE_INVALID_CID; 958 959 cid_info = phba->cid_array_info[cid_from_ulp]; 960 cid = cid_info->cid_array[cid_info->cid_alloc]; 961 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) { 962 __beiscsi_log(phba, KERN_ERR, 963 "BS_%d : failed to get cid: available %u:%u\n", 964 cid_info->avlbl_cids, cid_info->cid_free); 965 return BE_INVALID_CID; 966 } 967 /* empty the slot */ 968 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID; 969 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp)) 970 cid_info->cid_alloc = 0; 971 cid_info->avlbl_cids--; 972 return cid; 973} 974 975/** 976 * beiscsi_put_cid - Free the cid 977 * @phba: The phba for which the cid is being freed 978 * @cid: The cid to free 979 */ 980static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid) 981{ 982 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid); 983 struct hwi_wrb_context *pwrb_context; 984 struct hwi_controller *phwi_ctrlr; 985 struct ulp_cid_info *cid_info; 986 uint16_t cid_post_ulp; 987 988 phwi_ctrlr = phba->phwi_ctrlr; 989 pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; 990 cid_post_ulp = pwrb_context->ulp_num; 991 992 cid_info = phba->cid_array_info[cid_post_ulp]; 993 /* fill only in empty slot */ 994 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) { 995 __beiscsi_log(phba, KERN_ERR, 996 "BS_%d : failed to put cid %u: available %u:%u\n", 997 cid, cid_info->avlbl_cids, cid_info->cid_free); 998 return; 999 } 1000 cid_info->cid_array[cid_info->cid_free++] = cid; 1001 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp)) 1002 cid_info->cid_free = 0; 1003 cid_info->avlbl_cids++; 1004} 1005 1006/** 1007 * beiscsi_free_ep - free endpoint 1008 * @beiscsi_ep: pointer to device endpoint struct 1009 */ 1010static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep) 1011{ 1012 struct beiscsi_hba *phba = beiscsi_ep->phba; 1013 struct beiscsi_conn *beiscsi_conn; 1014 1015 beiscsi_put_cid(phba, beiscsi_ep->ep_cid); 1016 beiscsi_ep->phba = NULL; 1017 /* clear this to track freeing in beiscsi_ep_disconnect */ 1018 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL; 1019 1020 /** 1021 * Check if any connection resource allocated by driver 1022 * is to be freed.This case occurs when target redirection 1023 * or connection retry is done. 1024 **/ 1025 if (!beiscsi_ep->conn) 1026 return; 1027 1028 beiscsi_conn = beiscsi_ep->conn; 1029 /** 1030 * Break ep->conn link here so that completions after 1031 * this are ignored. 1032 */ 1033 beiscsi_ep->conn = NULL; 1034 if (beiscsi_conn->login_in_progress) { 1035 beiscsi_free_mgmt_task_handles(beiscsi_conn, 1036 beiscsi_conn->task); 1037 beiscsi_conn->login_in_progress = 0; 1038 } 1039} 1040 1041/** 1042 * beiscsi_open_conn - Ask FW to open a TCP connection 1043 * @ep: pointer to device endpoint struct 1044 * @src_addr: The source IP address 1045 * @dst_addr: The Destination IP address 1046 * @non_blocking: blocking or non-blocking call 1047 * 1048 * Asks the FW to open a TCP connection 1049 */ 1050static int beiscsi_open_conn(struct iscsi_endpoint *ep, 1051 struct sockaddr *src_addr, 1052 struct sockaddr *dst_addr, int non_blocking) 1053{ 1054 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1055 struct beiscsi_hba *phba = beiscsi_ep->phba; 1056 struct tcp_connect_and_offload_out *ptcpcnct_out; 1057 struct be_dma_mem nonemb_cmd; 1058 unsigned int tag, req_memsize; 1059 int ret = -ENOMEM; 1060 1061 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1062 "BS_%d : In beiscsi_open_conn\n"); 1063 1064 beiscsi_ep->ep_cid = beiscsi_get_cid(phba); 1065 if (beiscsi_ep->ep_cid == BE_INVALID_CID) { 1066 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1067 "BS_%d : No free cid available\n"); 1068 return ret; 1069 } 1070 1071 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1072 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n", 1073 beiscsi_ep->ep_cid); 1074 1075 phba->ep_array[BE_GET_CRI_FROM_CID 1076 (beiscsi_ep->ep_cid)] = ep; 1077 1078 beiscsi_ep->cid_vld = 0; 1079 1080 if (is_chip_be2_be3r(phba)) 1081 req_memsize = sizeof(struct tcp_connect_and_offload_in); 1082 else 1083 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1); 1084 1085 nonemb_cmd.va = dma_alloc_coherent(&phba->ctrl.pdev->dev, 1086 req_memsize, 1087 &nonemb_cmd.dma, GFP_KERNEL); 1088 if (nonemb_cmd.va == NULL) { 1089 1090 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1091 "BS_%d : Failed to allocate memory for" 1092 " mgmt_open_connection\n"); 1093 1094 beiscsi_free_ep(beiscsi_ep); 1095 return -ENOMEM; 1096 } 1097 nonemb_cmd.size = req_memsize; 1098 memset(nonemb_cmd.va, 0, nonemb_cmd.size); 1099 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd); 1100 if (!tag) { 1101 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1102 "BS_%d : mgmt_open_connection Failed for cid=%d\n", 1103 beiscsi_ep->ep_cid); 1104 1105 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size, 1106 nonemb_cmd.va, nonemb_cmd.dma); 1107 beiscsi_free_ep(beiscsi_ep); 1108 return -EAGAIN; 1109 } 1110 1111 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd); 1112 if (ret) { 1113 beiscsi_log(phba, KERN_ERR, 1114 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, 1115 "BS_%d : mgmt_open_connection Failed"); 1116 1117 if (ret != -EBUSY) 1118 dma_free_coherent(&phba->ctrl.pdev->dev, 1119 nonemb_cmd.size, nonemb_cmd.va, 1120 nonemb_cmd.dma); 1121 1122 beiscsi_free_ep(beiscsi_ep); 1123 return ret; 1124 } 1125 1126 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va; 1127 beiscsi_ep = ep->dd_data; 1128 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; 1129 beiscsi_ep->cid_vld = 1; 1130 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1131 "BS_%d : mgmt_open_connection Success\n"); 1132 1133 dma_free_coherent(&phba->ctrl.pdev->dev, nonemb_cmd.size, 1134 nonemb_cmd.va, nonemb_cmd.dma); 1135 return 0; 1136} 1137 1138/** 1139 * beiscsi_ep_connect - Ask chip to create TCP Conn 1140 * @shost: Pointer to scsi_host structure 1141 * @dst_addr: The IP address of Target 1142 * @non_blocking: blocking or non-blocking call 1143 * 1144 * This routines first asks chip to create a connection and then allocates an EP 1145 */ 1146struct iscsi_endpoint * 1147beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, 1148 int non_blocking) 1149{ 1150 struct beiscsi_hba *phba; 1151 struct beiscsi_endpoint *beiscsi_ep; 1152 struct iscsi_endpoint *ep; 1153 int ret; 1154 1155 if (!shost) { 1156 ret = -ENXIO; 1157 pr_err("beiscsi_ep_connect shost is NULL\n"); 1158 return ERR_PTR(ret); 1159 } 1160 1161 phba = iscsi_host_priv(shost); 1162 if (!beiscsi_hba_is_online(phba)) { 1163 ret = -EIO; 1164 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1165 "BS_%d : HBA in error 0x%lx\n", phba->state); 1166 return ERR_PTR(ret); 1167 } 1168 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) { 1169 ret = -EBUSY; 1170 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG, 1171 "BS_%d : The Adapter Port state is Down!!!\n"); 1172 return ERR_PTR(ret); 1173 } 1174 1175 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint)); 1176 if (!ep) { 1177 ret = -ENOMEM; 1178 return ERR_PTR(ret); 1179 } 1180 1181 beiscsi_ep = ep->dd_data; 1182 beiscsi_ep->phba = phba; 1183 beiscsi_ep->openiscsi_ep = ep; 1184 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking); 1185 if (ret) { 1186 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1187 "BS_%d : Failed in beiscsi_open_conn\n"); 1188 goto free_ep; 1189 } 1190 1191 return ep; 1192 1193free_ep: 1194 iscsi_destroy_endpoint(ep); 1195 return ERR_PTR(ret); 1196} 1197 1198/** 1199 * beiscsi_ep_poll - Poll to see if connection is established 1200 * @ep: endpoint to be used 1201 * @timeout_ms: timeout specified in millisecs 1202 * 1203 * Poll to see if TCP connection established 1204 */ 1205int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) 1206{ 1207 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1208 1209 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1210 "BS_%d : In beiscsi_ep_poll\n"); 1211 1212 if (beiscsi_ep->cid_vld == 1) 1213 return 1; 1214 else 1215 return 0; 1216} 1217 1218/** 1219 * beiscsi_flush_cq()- Flush the CQ created. 1220 * @phba: ptr device priv structure. 1221 * 1222 * Before the connection resource are freed flush 1223 * all the CQ enteries 1224 **/ 1225static void beiscsi_flush_cq(struct beiscsi_hba *phba) 1226{ 1227 uint16_t i; 1228 struct be_eq_obj *pbe_eq; 1229 struct hwi_controller *phwi_ctrlr; 1230 struct hwi_context_memory *phwi_context; 1231 1232 phwi_ctrlr = phba->phwi_ctrlr; 1233 phwi_context = phwi_ctrlr->phwi_ctxt; 1234 1235 for (i = 0; i < phba->num_cpus; i++) { 1236 pbe_eq = &phwi_context->be_eq[i]; 1237 irq_poll_disable(&pbe_eq->iopoll); 1238 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC); 1239 irq_poll_enable(&pbe_eq->iopoll); 1240 } 1241} 1242 1243/** 1244 * beiscsi_conn_close - Invalidate and upload connection 1245 * @beiscsi_ep: pointer to device endpoint struct 1246 * 1247 * Returns 0 on success, -1 on failure. 1248 */ 1249static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep) 1250{ 1251 struct beiscsi_hba *phba = beiscsi_ep->phba; 1252 unsigned int tag, attempts; 1253 int ret; 1254 1255 /** 1256 * Without successfully invalidating and uploading connection 1257 * driver can't reuse the CID so attempt more than once. 1258 */ 1259 attempts = 0; 1260 while (attempts++ < 3) { 1261 tag = beiscsi_invalidate_cxn(phba, beiscsi_ep); 1262 if (tag) { 1263 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1264 if (!ret) 1265 break; 1266 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1267 "BS_%d : invalidate conn failed cid %d\n", 1268 beiscsi_ep->ep_cid); 1269 } 1270 } 1271 1272 /* wait for all completions to arrive, then process them */ 1273 msleep(250); 1274 /* flush CQ entries */ 1275 beiscsi_flush_cq(phba); 1276 1277 if (attempts > 3) 1278 return -1; 1279 1280 attempts = 0; 1281 while (attempts++ < 3) { 1282 tag = beiscsi_upload_cxn(phba, beiscsi_ep); 1283 if (tag) { 1284 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1285 if (!ret) 1286 break; 1287 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1288 "BS_%d : upload conn failed cid %d\n", 1289 beiscsi_ep->ep_cid); 1290 } 1291 } 1292 if (attempts > 3) 1293 return -1; 1294 1295 return 0; 1296} 1297 1298/** 1299 * beiscsi_ep_disconnect - Tears down the TCP connection 1300 * @ep: endpoint to be used 1301 * 1302 * Tears down the TCP connection 1303 */ 1304void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) 1305{ 1306 struct beiscsi_endpoint *beiscsi_ep; 1307 struct beiscsi_conn *beiscsi_conn; 1308 struct beiscsi_hba *phba; 1309 uint16_t cri_index; 1310 1311 beiscsi_ep = ep->dd_data; 1312 phba = beiscsi_ep->phba; 1313 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1314 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n", 1315 beiscsi_ep->ep_cid); 1316 1317 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 1318 if (!phba->ep_array[cri_index]) { 1319 __beiscsi_log(phba, KERN_ERR, 1320 "BS_%d : ep_array at %u cid %u empty\n", 1321 cri_index, 1322 beiscsi_ep->ep_cid); 1323 return; 1324 } 1325 1326 if (beiscsi_ep->conn) { 1327 beiscsi_conn = beiscsi_ep->conn; 1328 iscsi_suspend_queue(beiscsi_conn->conn); 1329 } 1330 1331 if (!beiscsi_hba_is_online(phba)) { 1332 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1333 "BS_%d : HBA in error 0x%lx\n", phba->state); 1334 } else { 1335 /** 1336 * Make CID available even if close fails. 1337 * If not freed, FW might fail open using the CID. 1338 */ 1339 if (beiscsi_conn_close(beiscsi_ep) < 0) 1340 __beiscsi_log(phba, KERN_ERR, 1341 "BS_%d : close conn failed cid %d\n", 1342 beiscsi_ep->ep_cid); 1343 } 1344 1345 beiscsi_free_ep(beiscsi_ep); 1346 if (!phba->conn_table[cri_index]) 1347 __beiscsi_log(phba, KERN_ERR, 1348 "BS_%d : conn_table empty at %u: cid %u\n", 1349 cri_index, beiscsi_ep->ep_cid); 1350 phba->conn_table[cri_index] = NULL; 1351 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); 1352} 1353 1354umode_t beiscsi_attr_is_visible(int param_type, int param) 1355{ 1356 switch (param_type) { 1357 case ISCSI_NET_PARAM: 1358 switch (param) { 1359 case ISCSI_NET_PARAM_IFACE_ENABLE: 1360 case ISCSI_NET_PARAM_IPV4_ADDR: 1361 case ISCSI_NET_PARAM_IPV4_SUBNET: 1362 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 1363 case ISCSI_NET_PARAM_IPV4_GW: 1364 case ISCSI_NET_PARAM_IPV6_ADDR: 1365 case ISCSI_NET_PARAM_VLAN_ID: 1366 case ISCSI_NET_PARAM_VLAN_PRIORITY: 1367 case ISCSI_NET_PARAM_VLAN_ENABLED: 1368 return S_IRUGO; 1369 default: 1370 return 0; 1371 } 1372 case ISCSI_HOST_PARAM: 1373 switch (param) { 1374 case ISCSI_HOST_PARAM_HWADDRESS: 1375 case ISCSI_HOST_PARAM_INITIATOR_NAME: 1376 case ISCSI_HOST_PARAM_PORT_STATE: 1377 case ISCSI_HOST_PARAM_PORT_SPEED: 1378 return S_IRUGO; 1379 default: 1380 return 0; 1381 } 1382 case ISCSI_PARAM: 1383 switch (param) { 1384 case ISCSI_PARAM_MAX_RECV_DLENGTH: 1385 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 1386 case ISCSI_PARAM_HDRDGST_EN: 1387 case ISCSI_PARAM_DATADGST_EN: 1388 case ISCSI_PARAM_CONN_ADDRESS: 1389 case ISCSI_PARAM_CONN_PORT: 1390 case ISCSI_PARAM_EXP_STATSN: 1391 case ISCSI_PARAM_PERSISTENT_ADDRESS: 1392 case ISCSI_PARAM_PERSISTENT_PORT: 1393 case ISCSI_PARAM_PING_TMO: 1394 case ISCSI_PARAM_RECV_TMO: 1395 case ISCSI_PARAM_INITIAL_R2T_EN: 1396 case ISCSI_PARAM_MAX_R2T: 1397 case ISCSI_PARAM_IMM_DATA_EN: 1398 case ISCSI_PARAM_FIRST_BURST: 1399 case ISCSI_PARAM_MAX_BURST: 1400 case ISCSI_PARAM_PDU_INORDER_EN: 1401 case ISCSI_PARAM_DATASEQ_INORDER_EN: 1402 case ISCSI_PARAM_ERL: 1403 case ISCSI_PARAM_TARGET_NAME: 1404 case ISCSI_PARAM_TPGT: 1405 case ISCSI_PARAM_USERNAME: 1406 case ISCSI_PARAM_PASSWORD: 1407 case ISCSI_PARAM_USERNAME_IN: 1408 case ISCSI_PARAM_PASSWORD_IN: 1409 case ISCSI_PARAM_FAST_ABORT: 1410 case ISCSI_PARAM_ABORT_TMO: 1411 case ISCSI_PARAM_LU_RESET_TMO: 1412 case ISCSI_PARAM_IFACE_NAME: 1413 case ISCSI_PARAM_INITIATOR_NAME: 1414 return S_IRUGO; 1415 default: 1416 return 0; 1417 } 1418 } 1419 1420 return 0; 1421} 1422