| 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 | |
| 26 | extern 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 | */ |
| 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 | * @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 | */ |
| 172 | int 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 | |
| 234 | put_ep: |
| 235 | iscsi_put_endpoint(ep); |
| 236 | return rc; |
| 237 | } |
| 238 | |
| 239 | static 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 | |
| 258 | static 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 | |
| 277 | void 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 | |
| 292 | void 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_iface_config_vlan()- 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 | **/ |
| 316 | static int |
| 317 | beiscsi_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 | |
| 338 | static int |
| 339 | beiscsi_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 | |
| 403 | static int |
| 404 | beiscsi_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 | |
| 429 | int 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 | |
| 515 | static 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 | |
| 574 | int 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 | */ |
| 628 | int 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 | |
| 655 | int 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 | */ |
| 704 | static 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 | */ |
| 718 | static 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 | */ |
| 754 | int 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 | |
| 803 | int 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 | */ |
| 828 | void 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 | */ |
| 859 | static 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 | */ |
| 902 | int 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 | */ |
| 938 | static 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 | */ |
| 980 | static 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 | */ |
| 1010 | static 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 | */ |
| 1050 | static 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 | */ |
| 1146 | struct iscsi_endpoint * |
| 1147 | beiscsi_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 | |
| 1193 | free_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 | */ |
| 1205 | int 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 | **/ |
| 1225 | static 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 | */ |
| 1249 | static 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 | */ |
| 1304 | void beiscsi_ep_disconnect(struct iscsi_endpoint *ep) |
| 1305 | { |
| 1306 | struct beiscsi_endpoint *beiscsi_ep; |
| 1307 | struct beiscsi_hba *phba; |
| 1308 | uint16_t cri_index; |
| 1309 | |
| 1310 | beiscsi_ep = ep->dd_data; |
| 1311 | phba = beiscsi_ep->phba; |
| 1312 | beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, |
| 1313 | "BS_%d : In beiscsi_ep_disconnect for ep_cid = %u\n", |
| 1314 | beiscsi_ep->ep_cid); |
| 1315 | |
| 1316 | cri_index = BE_GET_CRI_FROM_CID(beiscsi_ep->ep_cid); |
| 1317 | if (!phba->ep_array[cri_index]) { |
| 1318 | __beiscsi_log(phba, KERN_ERR, |
| 1319 | "BS_%d : ep_array at %u cid %u empty\n", |
| 1320 | cri_index, |
| 1321 | beiscsi_ep->ep_cid); |
| 1322 | return; |
| 1323 | } |
| 1324 | |
| 1325 | if (!beiscsi_hba_is_online(phba)) { |
| 1326 | beiscsi_log(phba, KERN_INFO, BEISCSI_LOG_CONFIG, |
| 1327 | "BS_%d : HBA in error 0x%lx\n", phba->state); |
| 1328 | } else { |
| 1329 | /** |
| 1330 | * Make CID available even if close fails. |
| 1331 | * If not freed, FW might fail open using the CID. |
| 1332 | */ |
| 1333 | if (beiscsi_conn_close(beiscsi_ep) < 0) |
| 1334 | __beiscsi_log(phba, KERN_ERR, |
| 1335 | "BS_%d : close conn failed cid %d\n", |
| 1336 | beiscsi_ep->ep_cid); |
| 1337 | } |
| 1338 | |
| 1339 | beiscsi_free_ep(beiscsi_ep); |
| 1340 | if (!phba->conn_table[cri_index]) |
| 1341 | __beiscsi_log(phba, KERN_ERR, |
| 1342 | "BS_%d : conn_table empty at %u: cid %u\n", |
| 1343 | cri_index, beiscsi_ep->ep_cid); |
| 1344 | phba->conn_table[cri_index] = NULL; |
| 1345 | iscsi_destroy_endpoint(beiscsi_ep->openiscsi_ep); |
| 1346 | } |
| 1347 | |
| 1348 | umode_t beiscsi_attr_is_visible(int param_type, int param) |
| 1349 | { |
| 1350 | switch (param_type) { |
| 1351 | case ISCSI_NET_PARAM: |
| 1352 | switch (param) { |
| 1353 | case ISCSI_NET_PARAM_IFACE_ENABLE: |
| 1354 | case ISCSI_NET_PARAM_IPV4_ADDR: |
| 1355 | case ISCSI_NET_PARAM_IPV4_SUBNET: |
| 1356 | case ISCSI_NET_PARAM_IPV4_BOOTPROTO: |
| 1357 | case ISCSI_NET_PARAM_IPV4_GW: |
| 1358 | case ISCSI_NET_PARAM_IPV6_ADDR: |
| 1359 | case ISCSI_NET_PARAM_VLAN_ID: |
| 1360 | case ISCSI_NET_PARAM_VLAN_PRIORITY: |
| 1361 | case ISCSI_NET_PARAM_VLAN_ENABLED: |
| 1362 | return S_IRUGO; |
| 1363 | default: |
| 1364 | return 0; |
| 1365 | } |
| 1366 | case ISCSI_HOST_PARAM: |
| 1367 | switch (param) { |
| 1368 | case ISCSI_HOST_PARAM_HWADDRESS: |
| 1369 | case ISCSI_HOST_PARAM_INITIATOR_NAME: |
| 1370 | case ISCSI_HOST_PARAM_PORT_STATE: |
| 1371 | case ISCSI_HOST_PARAM_PORT_SPEED: |
| 1372 | return S_IRUGO; |
| 1373 | default: |
| 1374 | return 0; |
| 1375 | } |
| 1376 | case ISCSI_PARAM: |
| 1377 | switch (param) { |
| 1378 | case ISCSI_PARAM_MAX_RECV_DLENGTH: |
| 1379 | case ISCSI_PARAM_MAX_XMIT_DLENGTH: |
| 1380 | case ISCSI_PARAM_HDRDGST_EN: |
| 1381 | case ISCSI_PARAM_DATADGST_EN: |
| 1382 | case ISCSI_PARAM_CONN_ADDRESS: |
| 1383 | case ISCSI_PARAM_CONN_PORT: |
| 1384 | case ISCSI_PARAM_EXP_STATSN: |
| 1385 | case ISCSI_PARAM_PERSISTENT_ADDRESS: |
| 1386 | case ISCSI_PARAM_PERSISTENT_PORT: |
| 1387 | case ISCSI_PARAM_PING_TMO: |
| 1388 | case ISCSI_PARAM_RECV_TMO: |
| 1389 | case ISCSI_PARAM_INITIAL_R2T_EN: |
| 1390 | case ISCSI_PARAM_MAX_R2T: |
| 1391 | case ISCSI_PARAM_IMM_DATA_EN: |
| 1392 | case ISCSI_PARAM_FIRST_BURST: |
| 1393 | case ISCSI_PARAM_MAX_BURST: |
| 1394 | case ISCSI_PARAM_PDU_INORDER_EN: |
| 1395 | case ISCSI_PARAM_DATASEQ_INORDER_EN: |
| 1396 | case ISCSI_PARAM_ERL: |
| 1397 | case ISCSI_PARAM_TARGET_NAME: |
| 1398 | case ISCSI_PARAM_TPGT: |
| 1399 | case ISCSI_PARAM_USERNAME: |
| 1400 | case ISCSI_PARAM_PASSWORD: |
| 1401 | case ISCSI_PARAM_USERNAME_IN: |
| 1402 | case ISCSI_PARAM_PASSWORD_IN: |
| 1403 | case ISCSI_PARAM_FAST_ABORT: |
| 1404 | case ISCSI_PARAM_ABORT_TMO: |
| 1405 | case ISCSI_PARAM_LU_RESET_TMO: |
| 1406 | case ISCSI_PARAM_IFACE_NAME: |
| 1407 | case ISCSI_PARAM_INITIATOR_NAME: |
| 1408 | return S_IRUGO; |
| 1409 | default: |
| 1410 | return 0; |
| 1411 | } |
| 1412 | } |
| 1413 | |
| 1414 | return 0; |
| 1415 | } |