1 /* 2 * Copyright 2017 Broadcom. All Rights Reserved. 3 * The term "Broadcom" refers to Broadcom Limited and/or its subsidiaries. 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 * Contact Information: 11 * linux-drivers@broadcom.com 12 * 13 */ 14 15 #include <scsi/libiscsi.h> 16 #include <scsi/scsi_transport_iscsi.h> 17 #include <scsi/scsi_transport.h> 18 #include <scsi/scsi_cmnd.h> 19 #include <scsi/scsi_device.h> 20 #include <scsi/scsi_host.h> 21 #include <scsi/scsi_netlink.h> 22 #include <net/netlink.h> 23 #include <scsi/scsi.h> 24 25 #include "be_iscsi.h" 26 27 extern struct iscsi_transport beiscsi_iscsi_transport; 28 29 /** 30 * beiscsi_session_create - creates a new iscsi session 31 * @cmds_max: max commands supported 32 * @qdepth: max queue depth supported 33 * @initial_cmdsn: initial iscsi CMDSN 34 */ 35 struct 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; 93 destroy_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 */ 105 void 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 **/ 119 void 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 */ 130 struct iscsi_cls_conn * 131 beiscsi_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 * 169 * This function binds the TCP Conn with iSCSI Connection and Session. 170 */ 171 int beiscsi_conn_bind(struct iscsi_cls_session *cls_session, 172 struct iscsi_cls_conn *cls_conn, 173 u64 transport_fd, int is_leading) 174 { 175 struct iscsi_conn *conn = cls_conn->dd_data; 176 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 177 struct Scsi_Host *shost = iscsi_session_to_shost(cls_session); 178 struct beiscsi_hba *phba = iscsi_host_priv(shost); 179 struct hwi_controller *phwi_ctrlr = phba->phwi_ctrlr; 180 struct hwi_wrb_context *pwrb_context; 181 struct beiscsi_endpoint *beiscsi_ep; 182 struct iscsi_endpoint *ep; 183 uint16_t cri_index; 184 185 ep = iscsi_lookup_endpoint(transport_fd); 186 if (!ep) 187 return -EINVAL; 188 189 beiscsi_ep = ep->dd_data; 190 191 if (iscsi_conn_bind(cls_session, cls_conn, is_leading)) 192 return -EINVAL; 193 194 if (beiscsi_ep->phba != phba) { 195 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 196 "BS_%d : beiscsi_ep->hba=%p not equal to phba=%p\n", 197 beiscsi_ep->phba, phba); 198 199 return -EEXIST; 200 } 201 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 202 if (phba->conn_table[cri_index]) { 203 if (beiscsi_conn != phba->conn_table[cri_index] || 204 beiscsi_ep != phba->conn_table[cri_index]->ep) { 205 __beiscsi_log(phba, KERN_ERR, 206 "BS_%d : conn_table not empty at %u: cid %u conn %p:%p\n", 207 cri_index, 208 beiscsi_ep->ep_cid, 209 beiscsi_conn, 210 phba->conn_table[cri_index]); 211 return -EINVAL; 212 } 213 } 214 215 beiscsi_conn->beiscsi_conn_cid = beiscsi_ep->ep_cid; 216 beiscsi_conn->ep = beiscsi_ep; 217 beiscsi_ep->conn = beiscsi_conn; 218 /** 219 * Each connection is associated with a WRBQ kept in wrb_context. 220 * Store doorbell offset for transmit path. 221 */ 222 pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; 223 beiscsi_conn->doorbell_offset = pwrb_context->doorbell_offset; 224 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 225 "BS_%d : cid %d phba->conn_table[%u]=%p\n", 226 beiscsi_ep->ep_cid, cri_index, beiscsi_conn); 227 phba->conn_table[cri_index] = beiscsi_conn; 228 return 0; 229 } 230 231 static int beiscsi_iface_create_ipv4(struct beiscsi_hba *phba) 232 { 233 if (phba->ipv4_iface) 234 return 0; 235 236 phba->ipv4_iface = iscsi_create_iface(phba->shost, 237 &beiscsi_iscsi_transport, 238 ISCSI_IFACE_TYPE_IPV4, 239 0, 0); 240 if (!phba->ipv4_iface) { 241 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 242 "BS_%d : Could not " 243 "create default IPv4 address.\n"); 244 return -ENODEV; 245 } 246 247 return 0; 248 } 249 250 static int beiscsi_iface_create_ipv6(struct beiscsi_hba *phba) 251 { 252 if (phba->ipv6_iface) 253 return 0; 254 255 phba->ipv6_iface = iscsi_create_iface(phba->shost, 256 &beiscsi_iscsi_transport, 257 ISCSI_IFACE_TYPE_IPV6, 258 0, 0); 259 if (!phba->ipv6_iface) { 260 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 261 "BS_%d : Could not " 262 "create default IPv6 address.\n"); 263 return -ENODEV; 264 } 265 266 return 0; 267 } 268 269 void beiscsi_iface_create_default(struct beiscsi_hba *phba) 270 { 271 struct be_cmd_get_if_info_resp *if_info; 272 273 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V4, &if_info)) { 274 beiscsi_iface_create_ipv4(phba); 275 kfree(if_info); 276 } 277 278 if (!beiscsi_if_get_info(phba, BEISCSI_IP_TYPE_V6, &if_info)) { 279 beiscsi_iface_create_ipv6(phba); 280 kfree(if_info); 281 } 282 } 283 284 void beiscsi_iface_destroy_default(struct beiscsi_hba *phba) 285 { 286 if (phba->ipv6_iface) { 287 iscsi_destroy_iface(phba->ipv6_iface); 288 phba->ipv6_iface = NULL; 289 } 290 if (phba->ipv4_iface) { 291 iscsi_destroy_iface(phba->ipv4_iface); 292 phba->ipv4_iface = NULL; 293 } 294 } 295 296 /** 297 * beiscsi_set_vlan_tag()- Set the VLAN TAG 298 * @shost: Scsi Host for the driver instance 299 * @iface_param: Interface paramters 300 * 301 * Set the VLAN TAG for the adapter or disable 302 * the VLAN config 303 * 304 * returns 305 * Success: 0 306 * Failure: Non-Zero Value 307 **/ 308 static int 309 beiscsi_iface_config_vlan(struct Scsi_Host *shost, 310 struct iscsi_iface_param_info *iface_param) 311 { 312 struct beiscsi_hba *phba = iscsi_host_priv(shost); 313 int ret = -EPERM; 314 315 switch (iface_param->param) { 316 case ISCSI_NET_PARAM_VLAN_ENABLED: 317 ret = 0; 318 if (iface_param->value[0] != ISCSI_VLAN_ENABLE) 319 ret = beiscsi_if_set_vlan(phba, BEISCSI_VLAN_DISABLE); 320 break; 321 case ISCSI_NET_PARAM_VLAN_TAG: 322 ret = beiscsi_if_set_vlan(phba, 323 *((uint16_t *)iface_param->value)); 324 break; 325 } 326 return ret; 327 } 328 329 330 static int 331 beiscsi_iface_config_ipv4(struct Scsi_Host *shost, 332 struct iscsi_iface_param_info *info, 333 void *data, uint32_t dt_len) 334 { 335 struct beiscsi_hba *phba = iscsi_host_priv(shost); 336 u8 *ip = NULL, *subnet = NULL, *gw; 337 struct nlattr *nla; 338 int ret = -EPERM; 339 340 /* Check the param */ 341 switch (info->param) { 342 case ISCSI_NET_PARAM_IFACE_ENABLE: 343 if (info->value[0] == ISCSI_IFACE_ENABLE) 344 ret = beiscsi_iface_create_ipv4(phba); 345 else { 346 iscsi_destroy_iface(phba->ipv4_iface); 347 phba->ipv4_iface = NULL; 348 } 349 break; 350 case ISCSI_NET_PARAM_IPV4_GW: 351 gw = info->value; 352 ret = beiscsi_if_set_gw(phba, BEISCSI_IP_TYPE_V4, gw); 353 break; 354 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 355 if (info->value[0] == ISCSI_BOOTPROTO_DHCP) 356 ret = beiscsi_if_en_dhcp(phba, BEISCSI_IP_TYPE_V4); 357 else if (info->value[0] == ISCSI_BOOTPROTO_STATIC) 358 /* release DHCP IP address */ 359 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 360 NULL, NULL); 361 else 362 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 363 "BS_%d : Invalid BOOTPROTO: %d\n", 364 info->value[0]); 365 break; 366 case ISCSI_NET_PARAM_IPV4_ADDR: 367 ip = info->value; 368 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_SUBNET); 369 if (nla) { 370 info = nla_data(nla); 371 subnet = info->value; 372 } 373 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 374 ip, subnet); 375 break; 376 case ISCSI_NET_PARAM_IPV4_SUBNET: 377 /* 378 * OPCODE_COMMON_ISCSI_NTWK_MODIFY_IP_ADDR ioctl needs IP 379 * and subnet both. Find IP to be applied for this subnet. 380 */ 381 subnet = info->value; 382 nla = nla_find(data, dt_len, ISCSI_NET_PARAM_IPV4_ADDR); 383 if (nla) { 384 info = nla_data(nla); 385 ip = info->value; 386 } 387 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V4, 388 ip, subnet); 389 break; 390 } 391 392 return ret; 393 } 394 395 static int 396 beiscsi_iface_config_ipv6(struct Scsi_Host *shost, 397 struct iscsi_iface_param_info *iface_param, 398 void *data, uint32_t dt_len) 399 { 400 struct beiscsi_hba *phba = iscsi_host_priv(shost); 401 int ret = -EPERM; 402 403 switch (iface_param->param) { 404 case ISCSI_NET_PARAM_IFACE_ENABLE: 405 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) 406 ret = beiscsi_iface_create_ipv6(phba); 407 else { 408 iscsi_destroy_iface(phba->ipv6_iface); 409 phba->ipv6_iface = NULL; 410 } 411 break; 412 case ISCSI_NET_PARAM_IPV6_ADDR: 413 ret = beiscsi_if_en_static(phba, BEISCSI_IP_TYPE_V6, 414 iface_param->value, NULL); 415 break; 416 } 417 418 return ret; 419 } 420 421 int beiscsi_iface_set_param(struct Scsi_Host *shost, 422 void *data, uint32_t dt_len) 423 { 424 struct iscsi_iface_param_info *iface_param = NULL; 425 struct beiscsi_hba *phba = iscsi_host_priv(shost); 426 struct nlattr *attrib; 427 uint32_t rm_len = dt_len; 428 int ret; 429 430 if (!beiscsi_hba_is_online(phba)) { 431 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 432 "BS_%d : HBA in error 0x%lx\n", phba->state); 433 return -EBUSY; 434 } 435 436 /* update interface_handle */ 437 ret = beiscsi_if_get_handle(phba); 438 if (ret) { 439 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 440 "BS_%d : Getting Interface Handle Failed\n"); 441 return ret; 442 } 443 444 nla_for_each_attr(attrib, data, dt_len, rm_len) { 445 iface_param = nla_data(attrib); 446 447 if (iface_param->param_type != ISCSI_NET_PARAM) 448 continue; 449 450 /* 451 * BE2ISCSI only supports 1 interface 452 */ 453 if (iface_param->iface_num) { 454 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 455 "BS_%d : Invalid iface_num %d." 456 "Only iface_num 0 is supported.\n", 457 iface_param->iface_num); 458 459 return -EINVAL; 460 } 461 462 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 463 "BS_%d : %s.0 set param %d", 464 (iface_param->iface_type == ISCSI_IFACE_TYPE_IPV4) ? 465 "ipv4" : "ipv6", iface_param->param); 466 467 ret = -EPERM; 468 switch (iface_param->param) { 469 case ISCSI_NET_PARAM_VLAN_ENABLED: 470 case ISCSI_NET_PARAM_VLAN_TAG: 471 ret = beiscsi_iface_config_vlan(shost, iface_param); 472 break; 473 default: 474 switch (iface_param->iface_type) { 475 case ISCSI_IFACE_TYPE_IPV4: 476 ret = beiscsi_iface_config_ipv4(shost, 477 iface_param, 478 data, dt_len); 479 break; 480 case ISCSI_IFACE_TYPE_IPV6: 481 ret = beiscsi_iface_config_ipv6(shost, 482 iface_param, 483 data, dt_len); 484 break; 485 } 486 } 487 488 if (ret == -EPERM) { 489 __beiscsi_log(phba, KERN_ERR, 490 "BS_%d : %s.0 set param %d not permitted", 491 (iface_param->iface_type == 492 ISCSI_IFACE_TYPE_IPV4) ? "ipv4" : "ipv6", 493 iface_param->param); 494 ret = 0; 495 } 496 if (ret) 497 break; 498 } 499 500 return ret; 501 } 502 503 static int __beiscsi_iface_get_param(struct beiscsi_hba *phba, 504 struct iscsi_iface *iface, 505 int param, char *buf) 506 { 507 struct be_cmd_get_if_info_resp *if_info; 508 int len, ip_type = BEISCSI_IP_TYPE_V4; 509 510 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 511 ip_type = BEISCSI_IP_TYPE_V6; 512 513 len = beiscsi_if_get_info(phba, ip_type, &if_info); 514 if (len) 515 return len; 516 517 switch (param) { 518 case ISCSI_NET_PARAM_IPV4_ADDR: 519 len = sprintf(buf, "%pI4\n", if_info->ip_addr.addr); 520 break; 521 case ISCSI_NET_PARAM_IPV6_ADDR: 522 len = sprintf(buf, "%pI6\n", if_info->ip_addr.addr); 523 break; 524 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 525 if (!if_info->dhcp_state) 526 len = sprintf(buf, "static\n"); 527 else 528 len = sprintf(buf, "dhcp\n"); 529 break; 530 case ISCSI_NET_PARAM_IPV4_SUBNET: 531 len = sprintf(buf, "%pI4\n", if_info->ip_addr.subnet_mask); 532 break; 533 case ISCSI_NET_PARAM_VLAN_ENABLED: 534 len = sprintf(buf, "%s\n", 535 (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) ? 536 "disable" : "enable"); 537 break; 538 case ISCSI_NET_PARAM_VLAN_ID: 539 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 540 len = -EINVAL; 541 else 542 len = sprintf(buf, "%d\n", 543 (if_info->vlan_priority & 544 ISCSI_MAX_VLAN_ID)); 545 break; 546 case ISCSI_NET_PARAM_VLAN_PRIORITY: 547 if (if_info->vlan_priority == BEISCSI_VLAN_DISABLE) 548 len = -EINVAL; 549 else 550 len = sprintf(buf, "%d\n", 551 ((if_info->vlan_priority >> 13) & 552 ISCSI_MAX_VLAN_PRIORITY)); 553 break; 554 default: 555 WARN_ON(1); 556 } 557 558 kfree(if_info); 559 return len; 560 } 561 562 int beiscsi_iface_get_param(struct iscsi_iface *iface, 563 enum iscsi_param_type param_type, 564 int param, char *buf) 565 { 566 struct Scsi_Host *shost = iscsi_iface_to_shost(iface); 567 struct beiscsi_hba *phba = iscsi_host_priv(shost); 568 struct be_cmd_get_def_gateway_resp gateway; 569 int len = -EPERM; 570 571 if (param_type != ISCSI_NET_PARAM) 572 return 0; 573 if (!beiscsi_hba_is_online(phba)) { 574 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 575 "BS_%d : HBA in error 0x%lx\n", phba->state); 576 return -EBUSY; 577 } 578 579 switch (param) { 580 case ISCSI_NET_PARAM_IPV4_ADDR: 581 case ISCSI_NET_PARAM_IPV4_SUBNET: 582 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 583 case ISCSI_NET_PARAM_IPV6_ADDR: 584 case ISCSI_NET_PARAM_VLAN_ENABLED: 585 case ISCSI_NET_PARAM_VLAN_ID: 586 case ISCSI_NET_PARAM_VLAN_PRIORITY: 587 len = __beiscsi_iface_get_param(phba, iface, param, buf); 588 break; 589 case ISCSI_NET_PARAM_IFACE_ENABLE: 590 if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) 591 len = sprintf(buf, "%s\n", 592 phba->ipv4_iface ? "enable" : "disable"); 593 else if (iface->iface_type == ISCSI_IFACE_TYPE_IPV6) 594 len = sprintf(buf, "%s\n", 595 phba->ipv6_iface ? "enable" : "disable"); 596 break; 597 case ISCSI_NET_PARAM_IPV4_GW: 598 memset(&gateway, 0, sizeof(gateway)); 599 len = beiscsi_if_get_gw(phba, BEISCSI_IP_TYPE_V4, &gateway); 600 if (!len) 601 len = sprintf(buf, "%pI4\n", &gateway.ip_addr.addr); 602 break; 603 } 604 605 return len; 606 } 607 608 /** 609 * beiscsi_ep_get_param - get the iscsi parameter 610 * @ep: pointer to iscsi ep 611 * @param: parameter type identifier 612 * @buf: buffer pointer 613 * 614 * returns iscsi parameter 615 */ 616 int beiscsi_ep_get_param(struct iscsi_endpoint *ep, 617 enum iscsi_param param, char *buf) 618 { 619 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 620 int len; 621 622 beiscsi_log(beiscsi_ep->phba, KERN_INFO, 623 BEISCSI_LOG_CONFIG, 624 "BS_%d : In beiscsi_ep_get_param," 625 " param= %d\n", param); 626 627 switch (param) { 628 case ISCSI_PARAM_CONN_PORT: 629 len = sprintf(buf, "%hu\n", beiscsi_ep->dst_tcpport); 630 break; 631 case ISCSI_PARAM_CONN_ADDRESS: 632 if (beiscsi_ep->ip_type == BEISCSI_IP_TYPE_V4) 633 len = sprintf(buf, "%pI4\n", &beiscsi_ep->dst_addr); 634 else 635 len = sprintf(buf, "%pI6\n", &beiscsi_ep->dst6_addr); 636 break; 637 default: 638 len = -EPERM; 639 } 640 return len; 641 } 642 643 int beiscsi_set_param(struct iscsi_cls_conn *cls_conn, 644 enum iscsi_param param, char *buf, int buflen) 645 { 646 struct iscsi_conn *conn = cls_conn->dd_data; 647 struct iscsi_session *session = conn->session; 648 struct beiscsi_hba *phba = NULL; 649 int ret; 650 651 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 652 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 653 "BS_%d : In beiscsi_conn_set_param," 654 " param= %d\n", param); 655 656 ret = iscsi_set_param(cls_conn, param, buf, buflen); 657 if (ret) 658 return ret; 659 /* 660 * If userspace tried to set the value to higher than we can 661 * support override here. 662 */ 663 switch (param) { 664 case ISCSI_PARAM_FIRST_BURST: 665 if (session->first_burst > 8192) 666 session->first_burst = 8192; 667 break; 668 case ISCSI_PARAM_MAX_RECV_DLENGTH: 669 if (conn->max_recv_dlength > 65536) 670 conn->max_recv_dlength = 65536; 671 break; 672 case ISCSI_PARAM_MAX_BURST: 673 if (session->max_burst > 262144) 674 session->max_burst = 262144; 675 break; 676 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 677 if (conn->max_xmit_dlength > 65536) 678 conn->max_xmit_dlength = 65536; 679 default: 680 return 0; 681 } 682 683 return 0; 684 } 685 686 /** 687 * beiscsi_get_port_state - Get the Port State 688 * @shost : pointer to scsi_host structure 689 * 690 */ 691 static void beiscsi_get_port_state(struct Scsi_Host *shost) 692 { 693 struct beiscsi_hba *phba = iscsi_host_priv(shost); 694 struct iscsi_cls_host *ihost = shost->shost_data; 695 696 ihost->port_state = test_bit(BEISCSI_HBA_LINK_UP, &phba->state) ? 697 ISCSI_PORT_STATE_UP : ISCSI_PORT_STATE_DOWN; 698 } 699 700 /** 701 * beiscsi_get_port_speed - Get the Port Speed from Adapter 702 * @shost : pointer to scsi_host structure 703 * 704 */ 705 static void beiscsi_get_port_speed(struct Scsi_Host *shost) 706 { 707 struct beiscsi_hba *phba = iscsi_host_priv(shost); 708 struct iscsi_cls_host *ihost = shost->shost_data; 709 710 switch (phba->port_speed) { 711 case BE2ISCSI_LINK_SPEED_10MBPS: 712 ihost->port_speed = ISCSI_PORT_SPEED_10MBPS; 713 break; 714 case BE2ISCSI_LINK_SPEED_100MBPS: 715 ihost->port_speed = ISCSI_PORT_SPEED_100MBPS; 716 break; 717 case BE2ISCSI_LINK_SPEED_1GBPS: 718 ihost->port_speed = ISCSI_PORT_SPEED_1GBPS; 719 break; 720 case BE2ISCSI_LINK_SPEED_10GBPS: 721 ihost->port_speed = ISCSI_PORT_SPEED_10GBPS; 722 break; 723 case BE2ISCSI_LINK_SPEED_25GBPS: 724 ihost->port_speed = ISCSI_PORT_SPEED_25GBPS; 725 break; 726 case BE2ISCSI_LINK_SPEED_40GBPS: 727 ihost->port_speed = ISCSI_PORT_SPEED_40GBPS; 728 break; 729 default: 730 ihost->port_speed = ISCSI_PORT_SPEED_UNKNOWN; 731 } 732 } 733 734 /** 735 * beiscsi_get_host_param - get the iscsi parameter 736 * @shost: pointer to scsi_host structure 737 * @param: parameter type identifier 738 * @buf: buffer pointer 739 * 740 */ 741 int beiscsi_get_host_param(struct Scsi_Host *shost, 742 enum iscsi_host_param param, char *buf) 743 { 744 struct beiscsi_hba *phba = iscsi_host_priv(shost); 745 int status = 0; 746 747 if (!beiscsi_hba_is_online(phba)) { 748 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 749 "BS_%d : HBA in error 0x%lx\n", phba->state); 750 return 0; 751 } 752 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 753 "BS_%d : In beiscsi_get_host_param, param = %d\n", param); 754 755 switch (param) { 756 case ISCSI_HOST_PARAM_HWADDRESS: 757 status = beiscsi_get_macaddr(buf, phba); 758 if (status < 0) { 759 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 760 "BS_%d : beiscsi_get_macaddr Failed\n"); 761 return 0; 762 } 763 break; 764 case ISCSI_HOST_PARAM_INITIATOR_NAME: 765 /* try fetching user configured name first */ 766 status = beiscsi_get_initiator_name(phba, buf, true); 767 if (status < 0) { 768 status = beiscsi_get_initiator_name(phba, buf, false); 769 if (status < 0) { 770 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 771 "BS_%d : Retreiving Initiator Name Failed\n"); 772 status = 0; 773 } 774 } 775 break; 776 case ISCSI_HOST_PARAM_PORT_STATE: 777 beiscsi_get_port_state(shost); 778 status = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost)); 779 break; 780 case ISCSI_HOST_PARAM_PORT_SPEED: 781 beiscsi_get_port_speed(shost); 782 status = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost)); 783 break; 784 default: 785 return iscsi_host_get_param(shost, param, buf); 786 } 787 return status; 788 } 789 790 int beiscsi_get_macaddr(char *buf, struct beiscsi_hba *phba) 791 { 792 struct be_cmd_get_nic_conf_resp resp; 793 int rc; 794 795 if (phba->mac_addr_set) 796 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 797 798 memset(&resp, 0, sizeof(resp)); 799 rc = mgmt_get_nic_conf(phba, &resp); 800 if (rc) 801 return rc; 802 803 phba->mac_addr_set = true; 804 memcpy(phba->mac_address, resp.mac_address, ETH_ALEN); 805 return sysfs_format_mac(buf, phba->mac_address, ETH_ALEN); 806 } 807 808 /** 809 * beiscsi_conn_get_stats - get the iscsi stats 810 * @cls_conn: pointer to iscsi cls conn 811 * @stats: pointer to iscsi_stats structure 812 * 813 * returns iscsi stats 814 */ 815 void beiscsi_conn_get_stats(struct iscsi_cls_conn *cls_conn, 816 struct iscsi_stats *stats) 817 { 818 struct iscsi_conn *conn = cls_conn->dd_data; 819 struct beiscsi_hba *phba = NULL; 820 821 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 822 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 823 "BS_%d : In beiscsi_conn_get_stats\n"); 824 825 stats->txdata_octets = conn->txdata_octets; 826 stats->rxdata_octets = conn->rxdata_octets; 827 stats->dataout_pdus = conn->dataout_pdus_cnt; 828 stats->scsirsp_pdus = conn->scsirsp_pdus_cnt; 829 stats->scsicmd_pdus = conn->scsicmd_pdus_cnt; 830 stats->datain_pdus = conn->datain_pdus_cnt; 831 stats->tmfrsp_pdus = conn->tmfrsp_pdus_cnt; 832 stats->tmfcmd_pdus = conn->tmfcmd_pdus_cnt; 833 stats->r2t_pdus = conn->r2t_pdus_cnt; 834 stats->digest_err = 0; 835 stats->timeout_err = 0; 836 stats->custom_length = 1; 837 strcpy(stats->custom[0].desc, "eh_abort_cnt"); 838 stats->custom[0].value = conn->eh_abort_cnt; 839 } 840 841 /** 842 * beiscsi_set_params_for_offld - get the parameters for offload 843 * @beiscsi_conn: pointer to beiscsi_conn 844 * @params: pointer to offload_params structure 845 */ 846 static void beiscsi_set_params_for_offld(struct beiscsi_conn *beiscsi_conn, 847 struct beiscsi_offload_params *params) 848 { 849 struct iscsi_conn *conn = beiscsi_conn->conn; 850 struct iscsi_session *session = conn->session; 851 852 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_burst_length, 853 params, session->max_burst); 854 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 855 max_send_data_segment_length, params, 856 conn->max_xmit_dlength); 857 AMAP_SET_BITS(struct amap_beiscsi_offload_params, first_burst_length, 858 params, session->first_burst); 859 AMAP_SET_BITS(struct amap_beiscsi_offload_params, erl, params, 860 session->erl); 861 AMAP_SET_BITS(struct amap_beiscsi_offload_params, dde, params, 862 conn->datadgst_en); 863 AMAP_SET_BITS(struct amap_beiscsi_offload_params, hde, params, 864 conn->hdrdgst_en); 865 AMAP_SET_BITS(struct amap_beiscsi_offload_params, ir2t, params, 866 session->initial_r2t_en); 867 AMAP_SET_BITS(struct amap_beiscsi_offload_params, imd, params, 868 session->imm_data_en); 869 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 870 data_seq_inorder, params, 871 session->dataseq_inorder_en); 872 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 873 pdu_seq_inorder, params, 874 session->pdu_inorder_en); 875 AMAP_SET_BITS(struct amap_beiscsi_offload_params, max_r2t, params, 876 session->max_r2t); 877 AMAP_SET_BITS(struct amap_beiscsi_offload_params, exp_statsn, params, 878 (conn->exp_statsn - 1)); 879 AMAP_SET_BITS(struct amap_beiscsi_offload_params, 880 max_recv_data_segment_length, params, 881 conn->max_recv_dlength); 882 883 } 884 885 /** 886 * beiscsi_conn_start - offload of session to chip 887 * @cls_conn: pointer to beiscsi_conn 888 */ 889 int beiscsi_conn_start(struct iscsi_cls_conn *cls_conn) 890 { 891 struct iscsi_conn *conn = cls_conn->dd_data; 892 struct beiscsi_conn *beiscsi_conn = conn->dd_data; 893 struct beiscsi_endpoint *beiscsi_ep; 894 struct beiscsi_offload_params params; 895 struct beiscsi_hba *phba; 896 897 phba = ((struct beiscsi_conn *)conn->dd_data)->phba; 898 899 if (!beiscsi_hba_is_online(phba)) { 900 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 901 "BS_%d : HBA in error 0x%lx\n", phba->state); 902 return -EBUSY; 903 } 904 beiscsi_log(beiscsi_conn->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 905 "BS_%d : In beiscsi_conn_start\n"); 906 907 memset(¶ms, 0, sizeof(struct beiscsi_offload_params)); 908 beiscsi_ep = beiscsi_conn->ep; 909 if (!beiscsi_ep) 910 beiscsi_log(beiscsi_conn->phba, KERN_ERR, 911 BEISCSI_LOG_CONFIG, 912 "BS_%d : In beiscsi_conn_start , no beiscsi_ep\n"); 913 914 beiscsi_conn->login_in_progress = 0; 915 beiscsi_set_params_for_offld(beiscsi_conn, ¶ms); 916 beiscsi_offload_connection(beiscsi_conn, ¶ms); 917 iscsi_conn_start(cls_conn); 918 return 0; 919 } 920 921 /** 922 * beiscsi_get_cid - Allocate a cid 923 * @phba: The phba instance 924 */ 925 static int beiscsi_get_cid(struct beiscsi_hba *phba) 926 { 927 uint16_t cid_avlbl_ulp0, cid_avlbl_ulp1; 928 unsigned short cid, cid_from_ulp; 929 struct ulp_cid_info *cid_info; 930 931 /* Find the ULP which has more CID available */ 932 cid_avlbl_ulp0 = (phba->cid_array_info[BEISCSI_ULP0]) ? 933 BEISCSI_ULP0_AVLBL_CID(phba) : 0; 934 cid_avlbl_ulp1 = (phba->cid_array_info[BEISCSI_ULP1]) ? 935 BEISCSI_ULP1_AVLBL_CID(phba) : 0; 936 cid_from_ulp = (cid_avlbl_ulp0 > cid_avlbl_ulp1) ? 937 BEISCSI_ULP0 : BEISCSI_ULP1; 938 /** 939 * If iSCSI protocol is loaded only on ULP 0, and when cid_avlbl_ulp 940 * is ZERO for both, ULP 1 is returned. 941 * Check if ULP is loaded before getting new CID. 942 */ 943 if (!test_bit(cid_from_ulp, (void *)&phba->fw_config.ulp_supported)) 944 return BE_INVALID_CID; 945 946 cid_info = phba->cid_array_info[cid_from_ulp]; 947 cid = cid_info->cid_array[cid_info->cid_alloc]; 948 if (!cid_info->avlbl_cids || cid == BE_INVALID_CID) { 949 __beiscsi_log(phba, KERN_ERR, 950 "BS_%d : failed to get cid: available %u:%u\n", 951 cid_info->avlbl_cids, cid_info->cid_free); 952 return BE_INVALID_CID; 953 } 954 /* empty the slot */ 955 cid_info->cid_array[cid_info->cid_alloc++] = BE_INVALID_CID; 956 if (cid_info->cid_alloc == BEISCSI_GET_CID_COUNT(phba, cid_from_ulp)) 957 cid_info->cid_alloc = 0; 958 cid_info->avlbl_cids--; 959 return cid; 960 } 961 962 /** 963 * beiscsi_put_cid - Free the cid 964 * @phba: The phba for which the cid is being freed 965 * @cid: The cid to free 966 */ 967 static void beiscsi_put_cid(struct beiscsi_hba *phba, unsigned short cid) 968 { 969 uint16_t cri_index = BE_GET_CRI_FROM_CID(cid); 970 struct hwi_wrb_context *pwrb_context; 971 struct hwi_controller *phwi_ctrlr; 972 struct ulp_cid_info *cid_info; 973 uint16_t cid_post_ulp; 974 975 phwi_ctrlr = phba->phwi_ctrlr; 976 pwrb_context = &phwi_ctrlr->wrb_context[cri_index]; 977 cid_post_ulp = pwrb_context->ulp_num; 978 979 cid_info = phba->cid_array_info[cid_post_ulp]; 980 /* fill only in empty slot */ 981 if (cid_info->cid_array[cid_info->cid_free] != BE_INVALID_CID) { 982 __beiscsi_log(phba, KERN_ERR, 983 "BS_%d : failed to put cid %u: available %u:%u\n", 984 cid, cid_info->avlbl_cids, cid_info->cid_free); 985 return; 986 } 987 cid_info->cid_array[cid_info->cid_free++] = cid; 988 if (cid_info->cid_free == BEISCSI_GET_CID_COUNT(phba, cid_post_ulp)) 989 cid_info->cid_free = 0; 990 cid_info->avlbl_cids++; 991 } 992 993 /** 994 * beiscsi_free_ep - free endpoint 995 * @ep: pointer to iscsi endpoint structure 996 */ 997 static void beiscsi_free_ep(struct beiscsi_endpoint *beiscsi_ep) 998 { 999 struct beiscsi_hba *phba = beiscsi_ep->phba; 1000 struct beiscsi_conn *beiscsi_conn; 1001 1002 beiscsi_put_cid(phba, beiscsi_ep->ep_cid); 1003 beiscsi_ep->phba = NULL; 1004 /* clear this to track freeing in beiscsi_ep_disconnect */ 1005 phba->ep_array[BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid)] = NULL; 1006 1007 /** 1008 * Check if any connection resource allocated by driver 1009 * is to be freed.This case occurs when target redirection 1010 * or connection retry is done. 1011 **/ 1012 if (!beiscsi_ep->conn) 1013 return; 1014 1015 beiscsi_conn = beiscsi_ep->conn; 1016 /** 1017 * Break ep->conn link here so that completions after 1018 * this are ignored. 1019 */ 1020 beiscsi_ep->conn = NULL; 1021 if (beiscsi_conn->login_in_progress) { 1022 beiscsi_free_mgmt_task_handles(beiscsi_conn, 1023 beiscsi_conn->task); 1024 beiscsi_conn->login_in_progress = 0; 1025 } 1026 } 1027 1028 /** 1029 * beiscsi_open_conn - Ask FW to open a TCP connection 1030 * @ep: endpoint to be used 1031 * @src_addr: The source IP address 1032 * @dst_addr: The Destination IP address 1033 * 1034 * Asks the FW to open a TCP connection 1035 */ 1036 static int beiscsi_open_conn(struct iscsi_endpoint *ep, 1037 struct sockaddr *src_addr, 1038 struct sockaddr *dst_addr, int non_blocking) 1039 { 1040 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1041 struct beiscsi_hba *phba = beiscsi_ep->phba; 1042 struct tcp_connect_and_offload_out *ptcpcnct_out; 1043 struct be_dma_mem nonemb_cmd; 1044 unsigned int tag, req_memsize; 1045 int ret = -ENOMEM; 1046 1047 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1048 "BS_%d : In beiscsi_open_conn\n"); 1049 1050 beiscsi_ep->ep_cid = beiscsi_get_cid(phba); 1051 if (beiscsi_ep->ep_cid == BE_INVALID_CID) { 1052 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1053 "BS_%d : No free cid available\n"); 1054 return ret; 1055 } 1056 1057 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1058 "BS_%d : In beiscsi_open_conn, ep_cid=%d\n", 1059 beiscsi_ep->ep_cid); 1060 1061 phba->ep_array[BE_GET_CRI_FROM_CID 1062 (beiscsi_ep->ep_cid)] = ep; 1063 1064 beiscsi_ep->cid_vld = 0; 1065 1066 if (is_chip_be2_be3r(phba)) 1067 req_memsize = sizeof(struct tcp_connect_and_offload_in); 1068 else 1069 req_memsize = sizeof(struct tcp_connect_and_offload_in_v1); 1070 1071 nonemb_cmd.va = pci_alloc_consistent(phba->ctrl.pdev, 1072 req_memsize, 1073 &nonemb_cmd.dma); 1074 if (nonemb_cmd.va == NULL) { 1075 1076 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1077 "BS_%d : Failed to allocate memory for" 1078 " mgmt_open_connection\n"); 1079 1080 beiscsi_free_ep(beiscsi_ep); 1081 return -ENOMEM; 1082 } 1083 nonemb_cmd.size = req_memsize; 1084 memset(nonemb_cmd.va, 0, nonemb_cmd.size); 1085 tag = mgmt_open_connection(phba, dst_addr, beiscsi_ep, &nonemb_cmd); 1086 if (!tag) { 1087 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1088 "BS_%d : mgmt_open_connection Failed for cid=%d\n", 1089 beiscsi_ep->ep_cid); 1090 1091 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1092 nonemb_cmd.va, nonemb_cmd.dma); 1093 beiscsi_free_ep(beiscsi_ep); 1094 return -EAGAIN; 1095 } 1096 1097 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, &nonemb_cmd); 1098 if (ret) { 1099 beiscsi_log(phba, KERN_ERR, 1100 BEISCSI_LOG_CONFIG | BEISCSI_LOG_MBOX, 1101 "BS_%d : mgmt_open_connection Failed"); 1102 1103 if (ret != -EBUSY) 1104 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1105 nonemb_cmd.va, nonemb_cmd.dma); 1106 1107 beiscsi_free_ep(beiscsi_ep); 1108 return ret; 1109 } 1110 1111 ptcpcnct_out = (struct tcp_connect_and_offload_out *)nonemb_cmd.va; 1112 beiscsi_ep = ep->dd_data; 1113 beiscsi_ep->fw_handle = ptcpcnct_out->connection_handle; 1114 beiscsi_ep->cid_vld = 1; 1115 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1116 "BS_%d : mgmt_open_connection Success\n"); 1117 1118 pci_free_consistent(phba->ctrl.pdev, nonemb_cmd.size, 1119 nonemb_cmd.va, nonemb_cmd.dma); 1120 return 0; 1121 } 1122 1123 /** 1124 * beiscsi_ep_connect - Ask chip to create TCP Conn 1125 * @scsi_host: Pointer to scsi_host structure 1126 * @dst_addr: The IP address of Target 1127 * @non_blocking: blocking or non-blocking call 1128 * 1129 * This routines first asks chip to create a connection and then allocates an EP 1130 */ 1131 struct iscsi_endpoint * 1132 beiscsi_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr, 1133 int non_blocking) 1134 { 1135 struct beiscsi_hba *phba; 1136 struct beiscsi_endpoint *beiscsi_ep; 1137 struct iscsi_endpoint *ep; 1138 int ret; 1139 1140 if (!shost) { 1141 ret = -ENXIO; 1142 pr_err("beiscsi_ep_connect shost is NULL\n"); 1143 return ERR_PTR(ret); 1144 } 1145 1146 phba = iscsi_host_priv(shost); 1147 if (!beiscsi_hba_is_online(phba)) { 1148 ret = -EIO; 1149 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1150 "BS_%d : HBA in error 0x%lx\n", phba->state); 1151 return ERR_PTR(ret); 1152 } 1153 if (!test_bit(BEISCSI_HBA_LINK_UP, &phba->state)) { 1154 ret = -EBUSY; 1155 beiscsi_log(phba, KERN_WARNING, BEISCSI_LOG_CONFIG, 1156 "BS_%d : The Adapter Port state is Down!!!\n"); 1157 return ERR_PTR(ret); 1158 } 1159 1160 ep = iscsi_create_endpoint(sizeof(struct beiscsi_endpoint)); 1161 if (!ep) { 1162 ret = -ENOMEM; 1163 return ERR_PTR(ret); 1164 } 1165 1166 beiscsi_ep = ep->dd_data; 1167 beiscsi_ep->phba = phba; 1168 beiscsi_ep->openiscsi_ep = ep; 1169 ret = beiscsi_open_conn(ep, NULL, dst_addr, non_blocking); 1170 if (ret) { 1171 beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_CONFIG, 1172 "BS_%d : Failed in beiscsi_open_conn\n"); 1173 goto free_ep; 1174 } 1175 1176 return ep; 1177 1178 free_ep: 1179 iscsi_destroy_endpoint(ep); 1180 return ERR_PTR(ret); 1181 } 1182 1183 /** 1184 * beiscsi_ep_poll - Poll to see if connection is established 1185 * @ep: endpoint to be used 1186 * @timeout_ms: timeout specified in millisecs 1187 * 1188 * Poll to see if TCP connection established 1189 */ 1190 int beiscsi_ep_poll(struct iscsi_endpoint *ep, int timeout_ms) 1191 { 1192 struct beiscsi_endpoint *beiscsi_ep = ep->dd_data; 1193 1194 beiscsi_log(beiscsi_ep->phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1195 "BS_%d : In beiscsi_ep_poll\n"); 1196 1197 if (beiscsi_ep->cid_vld == 1) 1198 return 1; 1199 else 1200 return 0; 1201 } 1202 1203 /** 1204 * beiscsi_flush_cq()- Flush the CQ created. 1205 * @phba: ptr device priv structure. 1206 * 1207 * Before the connection resource are freed flush 1208 * all the CQ enteries 1209 **/ 1210 static void beiscsi_flush_cq(struct beiscsi_hba *phba) 1211 { 1212 uint16_t i; 1213 struct be_eq_obj *pbe_eq; 1214 struct hwi_controller *phwi_ctrlr; 1215 struct hwi_context_memory *phwi_context; 1216 1217 phwi_ctrlr = phba->phwi_ctrlr; 1218 phwi_context = phwi_ctrlr->phwi_ctxt; 1219 1220 for (i = 0; i < phba->num_cpus; i++) { 1221 pbe_eq = &phwi_context->be_eq[i]; 1222 irq_poll_disable(&pbe_eq->iopoll); 1223 beiscsi_process_cq(pbe_eq, BE2_MAX_NUM_CQ_PROC); 1224 irq_poll_enable(&pbe_eq->iopoll); 1225 } 1226 } 1227 1228 /** 1229 * beiscsi_conn_close - Invalidate and upload connection 1230 * @ep: The iscsi endpoint 1231 * 1232 * Returns 0 on success, -1 on failure. 1233 */ 1234 static int beiscsi_conn_close(struct beiscsi_endpoint *beiscsi_ep) 1235 { 1236 struct beiscsi_hba *phba = beiscsi_ep->phba; 1237 unsigned int tag, attempts; 1238 int ret; 1239 1240 /** 1241 * Without successfully invalidating and uploading connection 1242 * driver can't reuse the CID so attempt more than once. 1243 */ 1244 attempts = 0; 1245 while (attempts++ < 3) { 1246 tag = beiscsi_invalidate_cxn(phba, beiscsi_ep); 1247 if (tag) { 1248 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1249 if (!ret) 1250 break; 1251 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1252 "BS_%d : invalidate conn failed cid %d\n", 1253 beiscsi_ep->ep_cid); 1254 } 1255 } 1256 1257 /* wait for all completions to arrive, then process them */ 1258 msleep(250); 1259 /* flush CQ entries */ 1260 beiscsi_flush_cq(phba); 1261 1262 if (attempts > 3) 1263 return -1; 1264 1265 attempts = 0; 1266 while (attempts++ < 3) { 1267 tag = beiscsi_upload_cxn(phba, beiscsi_ep); 1268 if (tag) { 1269 ret = beiscsi_mccq_compl_wait(phba, tag, NULL, NULL); 1270 if (!ret) 1271 break; 1272 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1273 "BS_%d : upload conn failed cid %d\n", 1274 beiscsi_ep->ep_cid); 1275 } 1276 } 1277 if (attempts > 3) 1278 return -1; 1279 1280 return 0; 1281 } 1282 1283 /** 1284 * beiscsi_ep_disconnect - Tears down the TCP connection 1285 * @ep: endpoint to be used 1286 * 1287 * Tears down the TCP connection 1288 */ 1289 void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) 1290 { 1291 struct beiscsi_endpoint *beiscsi_ep; 1292 struct beiscsi_conn *beiscsi_conn; 1293 struct beiscsi_hba *phba; 1294 uint16_t cri_index; 1295 1296 beiscsi_ep = ep->dd_data; 1297 phba = beiscsi_ep->phba; 1298 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1299 "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n", 1300 beiscsi_ep->ep_cid); 1301 1302 cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); 1303 if (!phba->ep_array[cri_index]) { 1304 __beiscsi_log(phba, KERN_ERR, 1305 "BS_%d : ep_array at %u cid %u empty\n", 1306 cri_index, 1307 beiscsi_ep->ep_cid); 1308 return; 1309 } 1310 1311 if (beiscsi_ep->conn) { 1312 beiscsi_conn = beiscsi_ep->conn; 1313 iscsi_suspend_queue(beiscsi_conn->conn); 1314 } 1315 1316 if (!beiscsi_hba_is_online(phba)) { 1317 beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, 1318 "BS_%d : HBA in error 0x%lx\n", phba->state); 1319 } else { 1320 /** 1321 * Make CID available even if close fails. 1322 * If not freed, FW might fail open using the CID. 1323 */ 1324 if (beiscsi_conn_close(beiscsi_ep) < 0) 1325 __beiscsi_log(phba, KERN_ERR, 1326 "BS_%d : close conn failed cid %d\n", 1327 beiscsi_ep->ep_cid); 1328 } 1329 1330 beiscsi_free_ep(beiscsi_ep); 1331 if (!phba->conn_table[cri_index]) 1332 __beiscsi_log(phba, KERN_ERR, 1333 "BS_%d : conn_table empty at %u: cid %u\n", 1334 cri_index, beiscsi_ep->ep_cid); 1335 phba->conn_table[cri_index] = NULL; 1336 iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); 1337 } 1338 1339 umode_t beiscsi_attr_is_visible(int param_type, int param) 1340 { 1341 switch (param_type) { 1342 case ISCSI_NET_PARAM: 1343 switch (param) { 1344 case ISCSI_NET_PARAM_IFACE_ENABLE: 1345 case ISCSI_NET_PARAM_IPV4_ADDR: 1346 case ISCSI_NET_PARAM_IPV4_SUBNET: 1347 case ISCSI_NET_PARAM_IPV4_BOOTPROTO: 1348 case ISCSI_NET_PARAM_IPV4_GW: 1349 case ISCSI_NET_PARAM_IPV6_ADDR: 1350 case ISCSI_NET_PARAM_VLAN_ID: 1351 case ISCSI_NET_PARAM_VLAN_PRIORITY: 1352 case ISCSI_NET_PARAM_VLAN_ENABLED: 1353 return S_IRUGO; 1354 default: 1355 return 0; 1356 } 1357 case ISCSI_HOST_PARAM: 1358 switch (param) { 1359 case ISCSI_HOST_PARAM_HWADDRESS: 1360 case ISCSI_HOST_PARAM_INITIATOR_NAME: 1361 case ISCSI_HOST_PARAM_PORT_STATE: 1362 case ISCSI_HOST_PARAM_PORT_SPEED: 1363 return S_IRUGO; 1364 default: 1365 return 0; 1366 } 1367 case ISCSI_PARAM: 1368 switch (param) { 1369 case ISCSI_PARAM_MAX_RECV_DLENGTH: 1370 case ISCSI_PARAM_MAX_XMIT_DLENGTH: 1371 case ISCSI_PARAM_HDRDGST_EN: 1372 case ISCSI_PARAM_DATADGST_EN: 1373 case ISCSI_PARAM_CONN_ADDRESS: 1374 case ISCSI_PARAM_CONN_PORT: 1375 case ISCSI_PARAM_EXP_STATSN: 1376 case ISCSI_PARAM_PERSISTENT_ADDRESS: 1377 case ISCSI_PARAM_PERSISTENT_PORT: 1378 case ISCSI_PARAM_PING_TMO: 1379 case ISCSI_PARAM_RECV_TMO: 1380 case ISCSI_PARAM_INITIAL_R2T_EN: 1381 case ISCSI_PARAM_MAX_R2T: 1382 case ISCSI_PARAM_IMM_DATA_EN: 1383 case ISCSI_PARAM_FIRST_BURST: 1384 case ISCSI_PARAM_MAX_BURST: 1385 case ISCSI_PARAM_PDU_INORDER_EN: 1386 case ISCSI_PARAM_DATASEQ_INORDER_EN: 1387 case ISCSI_PARAM_ERL: 1388 case ISCSI_PARAM_TARGET_NAME: 1389 case ISCSI_PARAM_TPGT: 1390 case ISCSI_PARAM_USERNAME: 1391 case ISCSI_PARAM_PASSWORD: 1392 case ISCSI_PARAM_USERNAME_IN: 1393 case ISCSI_PARAM_PASSWORD_IN: 1394 case ISCSI_PARAM_FAST_ABORT: 1395 case ISCSI_PARAM_ABORT_TMO: 1396 case ISCSI_PARAM_LU_RESET_TMO: 1397 case ISCSI_PARAM_IFACE_NAME: 1398 case ISCSI_PARAM_INITIATOR_NAME: 1399 return S_IRUGO; 1400 default: 1401 return 0; 1402 } 1403 } 1404 1405 return 0; 1406 } 1407