include/scsi/iscsi_if.h

   1 /*
   2  * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
   3  *
   4  * Copyright (C) 2005 Dmitry Yusupov
   5  * Copyright (C) 2005 Alex Aizman
   6  * maintained by open-iscsi@googlegroups.com
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published
  10  * by the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16  * General Public License for more details.
  17  *
  18  * See the file COPYING included with this distribution for more details.
  19  */
  20
  21 #ifndef ISCSI_IF_H
  22 #define ISCSI_IF_H
  23
  24 #include <scsi/iscsi_proto.h>
  25 #include <linux/in.h>
  26 #include <linux/in6.h>
  27
  28 #define ISCSI_NL_GRP_ISCSID     1
  29 #define ISCSI_NL_GRP_UIP        2
  30
  31 #define UEVENT_BASE                     10
  32 #define KEVENT_BASE                     100
  33 #define ISCSI_ERR_BASE                  1000
  34
  35 enum iscsi_uevent_e {
  36         ISCSI_UEVENT_UNKNOWN            = 0,
  37
  38         /* down events */
  39         ISCSI_UEVENT_CREATE_SESSION     = UEVENT_BASE + 1,
  40         ISCSI_UEVENT_DESTROY_SESSION    = UEVENT_BASE + 2,
  41         ISCSI_UEVENT_CREATE_CONN        = UEVENT_BASE + 3,
  42         ISCSI_UEVENT_DESTROY_CONN       = UEVENT_BASE + 4,
  43         ISCSI_UEVENT_BIND_CONN          = UEVENT_BASE + 5,
  44         ISCSI_UEVENT_SET_PARAM          = UEVENT_BASE + 6,
  45         ISCSI_UEVENT_START_CONN         = UEVENT_BASE + 7,
  46         ISCSI_UEVENT_STOP_CONN          = UEVENT_BASE + 8,
  47         ISCSI_UEVENT_SEND_PDU           = UEVENT_BASE + 9,
  48         ISCSI_UEVENT_GET_STATS          = UEVENT_BASE + 10,
  49         ISCSI_UEVENT_GET_PARAM          = UEVENT_BASE + 11,
  50
  51         ISCSI_UEVENT_TRANSPORT_EP_CONNECT       = UEVENT_BASE + 12,
  52         ISCSI_UEVENT_TRANSPORT_EP_POLL          = UEVENT_BASE + 13,
  53         ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT    = UEVENT_BASE + 14,
  54
  55         ISCSI_UEVENT_TGT_DSCVR          = UEVENT_BASE + 15,
  56         ISCSI_UEVENT_SET_HOST_PARAM     = UEVENT_BASE + 16,
  57         ISCSI_UEVENT_UNBIND_SESSION     = UEVENT_BASE + 17,
  58         ISCSI_UEVENT_CREATE_BOUND_SESSION               = UEVENT_BASE + 18,
  59         ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST  = UEVENT_BASE + 19,
  60
  61         ISCSI_UEVENT_PATH_UPDATE        = UEVENT_BASE + 20,
  62         ISCSI_UEVENT_SET_IFACE_PARAMS   = UEVENT_BASE + 21,
  63         ISCSI_UEVENT_PING               = UEVENT_BASE + 22,
  64         ISCSI_UEVENT_GET_CHAP           = UEVENT_BASE + 23,
  65         ISCSI_UEVENT_DELETE_CHAP        = UEVENT_BASE + 24,
  66         ISCSI_UEVENT_SET_FLASHNODE_PARAMS       = UEVENT_BASE + 25,
  67         ISCSI_UEVENT_NEW_FLASHNODE      = UEVENT_BASE + 26,
  68         ISCSI_UEVENT_DEL_FLASHNODE      = UEVENT_BASE + 27,
  69         ISCSI_UEVENT_LOGIN_FLASHNODE    = UEVENT_BASE + 28,
  70         ISCSI_UEVENT_LOGOUT_FLASHNODE   = UEVENT_BASE + 29,
  71         ISCSI_UEVENT_LOGOUT_FLASHNODE_SID       = UEVENT_BASE + 30,
  72         ISCSI_UEVENT_SET_CHAP           = UEVENT_BASE + 31,
  73
  74         /* up events */
  75         ISCSI_KEVENT_RECV_PDU           = KEVENT_BASE + 1,
  76         ISCSI_KEVENT_CONN_ERROR         = KEVENT_BASE + 2,
  77         ISCSI_KEVENT_IF_ERROR           = KEVENT_BASE + 3,
  78         ISCSI_KEVENT_DESTROY_SESSION    = KEVENT_BASE + 4,
  79         ISCSI_KEVENT_UNBIND_SESSION     = KEVENT_BASE + 5,
  80         ISCSI_KEVENT_CREATE_SESSION     = KEVENT_BASE + 6,
  81
  82         ISCSI_KEVENT_PATH_REQ           = KEVENT_BASE + 7,
  83         ISCSI_KEVENT_IF_DOWN            = KEVENT_BASE + 8,
  84         ISCSI_KEVENT_CONN_LOGIN_STATE   = KEVENT_BASE + 9,
  85         ISCSI_KEVENT_HOST_EVENT         = KEVENT_BASE + 10,
  86         ISCSI_KEVENT_PING_COMP          = KEVENT_BASE + 11,
  87 };
  88
  89 enum iscsi_tgt_dscvr {
  90         ISCSI_TGT_DSCVR_SEND_TARGETS    = 1,
  91         ISCSI_TGT_DSCVR_ISNS            = 2,
  92         ISCSI_TGT_DSCVR_SLP             = 3,
  93 };
  94
  95 enum iscsi_host_event_code {
  96         ISCSI_EVENT_LINKUP              = 1,
  97         ISCSI_EVENT_LINKDOWN,
  98         /* must always be last */
  99         ISCSI_EVENT_MAX,
 100 };
 101
 102 struct iscsi_uevent {
 103         uint32_t type; /* k/u events type */
 104         uint32_t iferror; /* carries interface or resource errors */
 105         uint64_t transport_handle;
 106
 107         union {
 108                 /* messages u -> k */
 109                 struct msg_create_session {
 110                         uint32_t        initial_cmdsn;
 111                         uint16_t        cmds_max;
 112                         uint16_t        queue_depth;
 113                 } c_session;
 114                 struct msg_create_bound_session {
 115                         uint64_t        ep_handle;
 116                         uint32_t        initial_cmdsn;
 117                         uint16_t        cmds_max;
 118                         uint16_t        queue_depth;
 119                 } c_bound_session;
 120                 struct msg_destroy_session {
 121                         uint32_t        sid;
 122                 } d_session;
 123                 struct msg_create_conn {
 124                         uint32_t        sid;
 125                         uint32_t        cid;
 126                 } c_conn;
 127                 struct msg_bind_conn {
 128                         uint32_t        sid;
 129                         uint32_t        cid;
 130                         uint64_t        transport_eph;
 131                         uint32_t        is_leading;
 132                 } b_conn;
 133                 struct msg_destroy_conn {
 134                         uint32_t        sid;
 135                         uint32_t        cid;
 136                 } d_conn;
 137                 struct msg_send_pdu {
 138                         uint32_t        sid;
 139                         uint32_t        cid;
 140                         uint32_t        hdr_size;
 141                         uint32_t        data_size;
 142                 } send_pdu;
 143                 struct msg_set_param {
 144                         uint32_t        sid;
 145                         uint32_t        cid;
 146                         uint32_t        param; /* enum iscsi_param */
 147                         uint32_t        len;
 148                 } set_param;
 149                 struct msg_start_conn {
 150                         uint32_t        sid;
 151                         uint32_t        cid;
 152                 } start_conn;
 153                 struct msg_stop_conn {
 154                         uint32_t        sid;
 155                         uint32_t        cid;
 156                         uint64_t        conn_handle;
 157                         uint32_t        flag;
 158                 } stop_conn;
 159                 struct msg_get_stats {
 160                         uint32_t        sid;
 161                         uint32_t        cid;
 162                 } get_stats;
 163                 struct msg_transport_connect {
 164                         uint32_t        non_blocking;
 165                 } ep_connect;
 166                 struct msg_transport_connect_through_host {
 167                         uint32_t        host_no;
 168                         uint32_t        non_blocking;
 169                 } ep_connect_through_host;
 170                 struct msg_transport_poll {
 171                         uint64_t        ep_handle;
 172                         uint32_t        timeout_ms;
 173                 } ep_poll;
 174                 struct msg_transport_disconnect {
 175                         uint64_t        ep_handle;
 176                 } ep_disconnect;
 177                 struct msg_tgt_dscvr {
 178                         enum iscsi_tgt_dscvr    type;
 179                         uint32_t        host_no;
 180                         /*
 181                          * enable = 1 to establish a new connection
 182                          * with the server. enable = 0 to disconnect
 183                          * from the server. Used primarily to switch
 184                          * from one iSNS server to another.
 185                          */
 186                         uint32_t        enable;
 187                 } tgt_dscvr;
 188                 struct msg_set_host_param {
 189                         uint32_t        host_no;
 190                         uint32_t        param; /* enum iscsi_host_param */
 191                         uint32_t        len;
 192                 } set_host_param;
 193                 struct msg_set_path {
 194                         uint32_t        host_no;
 195                 } set_path;
 196                 struct msg_set_iface_params {
 197                         uint32_t        host_no;
 198                         uint32_t        count;
 199                 } set_iface_params;
 200                 struct msg_iscsi_ping {
 201                         uint32_t        host_no;
 202                         uint32_t        iface_num;
 203                         uint32_t        iface_type;
 204                         uint32_t        payload_size;
 205                         uint32_t        pid;    /* unique ping id associated
 206                                                    with each ping request */
 207                 } iscsi_ping;
 208                 struct msg_get_chap {
 209                         uint32_t        host_no;
 210                         uint32_t        num_entries; /* number of CHAP entries
 211                                                       * on request, number of
 212                                                       * valid CHAP entries on
 213                                                       * response */
 214                         uint16_t        chap_tbl_idx;
 215                 } get_chap;
 216                 struct msg_delete_chap {
 217                        uint32_t        host_no;
 218                        uint16_t        chap_tbl_idx;
 219                 } delete_chap;
 220                 struct msg_set_flashnode_param {
 221                         uint32_t        host_no;
 222                         uint32_t        flashnode_idx;
 223                         uint32_t        count;
 224                 } set_flashnode;
 225                 struct msg_new_flashnode {
 226                         uint32_t        host_no;
 227                         uint32_t        len;
 228                 } new_flashnode;
 229                 struct msg_del_flashnode {
 230                         uint32_t        host_no;
 231                         uint32_t        flashnode_idx;
 232                 } del_flashnode;
 233                 struct msg_login_flashnode {
 234                         uint32_t        host_no;
 235                         uint32_t        flashnode_idx;
 236                 } login_flashnode;
 237                 struct msg_logout_flashnode {
 238                         uint32_t        host_no;
 239                         uint32_t        flashnode_idx;
 240                 } logout_flashnode;
 241                 struct msg_logout_flashnode_sid {
 242                         uint32_t        host_no;
 243                         uint32_t        sid;
 244                 } logout_flashnode_sid;
 245         } u;
 246         union {
 247                 /* messages k -> u */
 248                 int                     retcode;
 249                 struct msg_create_session_ret {
 250                         uint32_t        sid;
 251                         uint32_t        host_no;
 252                 } c_session_ret;
 253                 struct msg_create_conn_ret {
 254                         uint32_t        sid;
 255                         uint32_t        cid;
 256                 } c_conn_ret;
 257                 struct msg_unbind_session {
 258                         uint32_t        sid;
 259                         uint32_t        host_no;
 260                 } unbind_session;
 261                 struct msg_recv_req {
 262                         uint32_t        sid;
 263                         uint32_t        cid;
 264                         uint64_t        recv_handle;
 265                 } recv_req;
 266                 struct msg_conn_login {
 267                         uint32_t        sid;
 268                         uint32_t        cid;
 269                         uint32_t        state; /* enum iscsi_conn_state */
 270                 } conn_login;
 271                 struct msg_conn_error {
 272                         uint32_t        sid;
 273                         uint32_t        cid;
 274                         uint32_t        error; /* enum iscsi_err */
 275                 } connerror;
 276                 struct msg_session_destroyed {
 277                         uint32_t        host_no;
 278                         uint32_t        sid;
 279                 } d_session;
 280                 struct msg_transport_connect_ret {
 281                         uint64_t        handle;
 282                 } ep_connect_ret;
 283                 struct msg_req_path {
 284                         uint32_t        host_no;
 285                 } req_path;
 286                 struct msg_notify_if_down {
 287                         uint32_t        host_no;
 288                 } notify_if_down;
 289                 struct msg_host_event {
 290                         uint32_t        host_no;
 291                         uint32_t        data_size;
 292                         enum iscsi_host_event_code code;
 293                 } host_event;
 294                 struct msg_ping_comp {
 295                         uint32_t        host_no;
 296                         uint32_t        status; /* enum
 297                                                  * iscsi_ping_status_code */
 298                         uint32_t        pid;    /* unique ping id associated
 299                                                    with each ping request */
 300                         uint32_t        data_size;
 301                 } ping_comp;
 302                 struct msg_new_flashnode_ret {
 303                         uint32_t        flashnode_idx;
 304                 } new_flashnode_ret;
 305         } r;
 306 } __attribute__ ((aligned (sizeof(uint64_t))));
 307
 308 enum iscsi_param_type {
 309         ISCSI_PARAM,            /* iscsi_param (session, conn, target, LU) */
 310         ISCSI_HOST_PARAM,       /* iscsi_host_param */
 311         ISCSI_NET_PARAM,        /* iscsi_net_param */
 312         ISCSI_FLASHNODE_PARAM,  /* iscsi_flashnode_param */
 313         ISCSI_CHAP_PARAM,       /* iscsi_chap_param */
 314 };
 315
 316 /* structure for minimalist usecase */
 317 struct iscsi_param_info {
 318         uint32_t len;           /* Actual length of the param value */
 319         uint16_t param;         /* iscsi param */
 320         uint8_t value[0];       /* length sized value follows */
 321 } __packed;
 322
 323 struct iscsi_iface_param_info {
 324         uint32_t iface_num;     /* iface number, 0 - n */
 325         uint32_t len;           /* Actual length of the param */
 326         uint16_t param;         /* iscsi param value */
 327         uint8_t iface_type;     /* IPv4 or IPv6 */
 328         uint8_t param_type;     /* iscsi_param_type */
 329         uint8_t value[0];       /* length sized value follows */
 330 } __packed;
 331
 332 /*
 333  * To keep the struct iscsi_uevent size the same for userspace code
 334  * compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
 335  * ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
 336  * struct iscsi_uevent in the NETLINK_ISCSI message.
 337  */
 338 struct iscsi_path {
 339         uint64_t        handle;
 340         uint8_t         mac_addr[6];
 341         uint8_t         mac_addr_old[6];
 342         uint32_t        ip_addr_len;    /* 4 or 16 */
 343         union {
 344                 struct in_addr  v4_addr;
 345                 struct in6_addr v6_addr;
 346         } src;
 347         union {
 348                 struct in_addr  v4_addr;
 349                 struct in6_addr v6_addr;
 350         } dst;
 351         uint16_t        vlan_id;
 352         uint16_t        pmtu;
 353 } __attribute__ ((aligned (sizeof(uint64_t))));
 354
 355 /* iscsi iface enabled/disabled setting */
 356 #define ISCSI_IFACE_DISABLE     0x01
 357 #define ISCSI_IFACE_ENABLE      0x02
 358
 359 /* ipv4 bootproto */
 360 #define ISCSI_BOOTPROTO_STATIC          0x01
 361 #define ISCSI_BOOTPROTO_DHCP            0x02
 362
 363 /* ipv6 addr autoconfig type */
 364 #define ISCSI_IPV6_AUTOCFG_DISABLE              0x01
 365 #define ISCSI_IPV6_AUTOCFG_ND_ENABLE            0x02
 366 #define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE        0x03
 367
 368 /* ipv6 link local addr type */
 369 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE     0x01
 370 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE    0x02
 371
 372 /* ipv6 router addr type */
 373 #define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE        0x01
 374 #define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE       0x02
 375
 376 #define ISCSI_IFACE_TYPE_IPV4           0x01
 377 #define ISCSI_IFACE_TYPE_IPV6           0x02
 378
 379 #define ISCSI_MAX_VLAN_ID               4095
 380 #define ISCSI_MAX_VLAN_PRIORITY         7
 381
 382 /* iscsi vlan enable/disabled setting */
 383 #define ISCSI_VLAN_DISABLE      0x01
 384 #define ISCSI_VLAN_ENABLE       0x02
 385
 386 /* iSCSI network params */
 387 enum iscsi_net_param {
 388         ISCSI_NET_PARAM_IPV4_ADDR               = 1,
 389         ISCSI_NET_PARAM_IPV4_SUBNET             = 2,
 390         ISCSI_NET_PARAM_IPV4_GW                 = 3,
 391         ISCSI_NET_PARAM_IPV4_BOOTPROTO          = 4,
 392         ISCSI_NET_PARAM_MAC                     = 5,
 393         ISCSI_NET_PARAM_IPV6_LINKLOCAL          = 6,
 394         ISCSI_NET_PARAM_IPV6_ADDR               = 7,
 395         ISCSI_NET_PARAM_IPV6_ROUTER             = 8,
 396         ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG       = 9,
 397         ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG  = 10,
 398         ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG     = 11,
 399         ISCSI_NET_PARAM_IFACE_ENABLE            = 12,
 400         ISCSI_NET_PARAM_VLAN_ID                 = 13,
 401         ISCSI_NET_PARAM_VLAN_PRIORITY           = 14,
 402         ISCSI_NET_PARAM_VLAN_ENABLED            = 15,
 403         ISCSI_NET_PARAM_VLAN_TAG                = 16,
 404         ISCSI_NET_PARAM_IFACE_TYPE              = 17,
 405         ISCSI_NET_PARAM_IFACE_NAME              = 18,
 406         ISCSI_NET_PARAM_MTU                     = 19,
 407         ISCSI_NET_PARAM_PORT                    = 20,
 408 };
 409
 410 enum iscsi_conn_state {
 411         ISCSI_CONN_STATE_FREE,
 412         ISCSI_CONN_STATE_XPT_WAIT,
 413         ISCSI_CONN_STATE_IN_LOGIN,
 414         ISCSI_CONN_STATE_LOGGED_IN,
 415         ISCSI_CONN_STATE_IN_LOGOUT,
 416         ISCSI_CONN_STATE_LOGOUT_REQUESTED,
 417         ISCSI_CONN_STATE_CLEANUP_WAIT,
 418 };
 419
 420 /*
 421  * Common error codes
 422  */
 423 enum iscsi_err {
 424         ISCSI_OK                        = 0,
 425
 426         ISCSI_ERR_DATASN                = ISCSI_ERR_BASE + 1,
 427         ISCSI_ERR_DATA_OFFSET           = ISCSI_ERR_BASE + 2,
 428         ISCSI_ERR_MAX_CMDSN             = ISCSI_ERR_BASE + 3,
 429         ISCSI_ERR_EXP_CMDSN             = ISCSI_ERR_BASE + 4,
 430         ISCSI_ERR_BAD_OPCODE            = ISCSI_ERR_BASE + 5,
 431         ISCSI_ERR_DATALEN               = ISCSI_ERR_BASE + 6,
 432         ISCSI_ERR_AHSLEN                = ISCSI_ERR_BASE + 7,
 433         ISCSI_ERR_PROTO                 = ISCSI_ERR_BASE + 8,
 434         ISCSI_ERR_LUN                   = ISCSI_ERR_BASE + 9,
 435         ISCSI_ERR_BAD_ITT               = ISCSI_ERR_BASE + 10,
 436         ISCSI_ERR_CONN_FAILED           = ISCSI_ERR_BASE + 11,
 437         ISCSI_ERR_R2TSN                 = ISCSI_ERR_BASE + 12,
 438         ISCSI_ERR_SESSION_FAILED        = ISCSI_ERR_BASE + 13,
 439         ISCSI_ERR_HDR_DGST              = ISCSI_ERR_BASE + 14,
 440         ISCSI_ERR_DATA_DGST             = ISCSI_ERR_BASE + 15,
 441         ISCSI_ERR_PARAM_NOT_FOUND       = ISCSI_ERR_BASE + 16,
 442         ISCSI_ERR_NO_SCSI_CMD           = ISCSI_ERR_BASE + 17,
 443         ISCSI_ERR_INVALID_HOST          = ISCSI_ERR_BASE + 18,
 444         ISCSI_ERR_XMIT_FAILED           = ISCSI_ERR_BASE + 19,
 445         ISCSI_ERR_TCP_CONN_CLOSE        = ISCSI_ERR_BASE + 20,
 446         ISCSI_ERR_SCSI_EH_SESSION_RST   = ISCSI_ERR_BASE + 21,
 447 };
 448
 449 /*
 450  * iSCSI Parameters (RFC3720)
 451  */
 452 enum iscsi_param {
 453         /* passed in using netlink set param */
 454         ISCSI_PARAM_MAX_RECV_DLENGTH,
 455         ISCSI_PARAM_MAX_XMIT_DLENGTH,
 456         ISCSI_PARAM_HDRDGST_EN,
 457         ISCSI_PARAM_DATADGST_EN,
 458         ISCSI_PARAM_INITIAL_R2T_EN,
 459         ISCSI_PARAM_MAX_R2T,
 460         ISCSI_PARAM_IMM_DATA_EN,
 461         ISCSI_PARAM_FIRST_BURST,
 462         ISCSI_PARAM_MAX_BURST,
 463         ISCSI_PARAM_PDU_INORDER_EN,
 464         ISCSI_PARAM_DATASEQ_INORDER_EN,
 465         ISCSI_PARAM_ERL,
 466         ISCSI_PARAM_IFMARKER_EN,
 467         ISCSI_PARAM_OFMARKER_EN,
 468         ISCSI_PARAM_EXP_STATSN,
 469         ISCSI_PARAM_TARGET_NAME,
 470         ISCSI_PARAM_TPGT,
 471         ISCSI_PARAM_PERSISTENT_ADDRESS,
 472         ISCSI_PARAM_PERSISTENT_PORT,
 473         ISCSI_PARAM_SESS_RECOVERY_TMO,
 474
 475         /* passed in through bind conn using transport_fd */
 476         ISCSI_PARAM_CONN_PORT,
 477         ISCSI_PARAM_CONN_ADDRESS,
 478
 479         ISCSI_PARAM_USERNAME,
 480         ISCSI_PARAM_USERNAME_IN,
 481         ISCSI_PARAM_PASSWORD,
 482         ISCSI_PARAM_PASSWORD_IN,
 483
 484         ISCSI_PARAM_FAST_ABORT,
 485         ISCSI_PARAM_ABORT_TMO,
 486         ISCSI_PARAM_LU_RESET_TMO,
 487         ISCSI_PARAM_HOST_RESET_TMO,
 488
 489         ISCSI_PARAM_PING_TMO,
 490         ISCSI_PARAM_RECV_TMO,
 491
 492         ISCSI_PARAM_IFACE_NAME,
 493         ISCSI_PARAM_ISID,
 494         ISCSI_PARAM_INITIATOR_NAME,
 495
 496         ISCSI_PARAM_TGT_RESET_TMO,
 497         ISCSI_PARAM_TARGET_ALIAS,
 498
 499         ISCSI_PARAM_CHAP_IN_IDX,
 500         ISCSI_PARAM_CHAP_OUT_IDX,
 501
 502         ISCSI_PARAM_BOOT_ROOT,
 503         ISCSI_PARAM_BOOT_NIC,
 504         ISCSI_PARAM_BOOT_TARGET,
 505
 506         ISCSI_PARAM_AUTO_SND_TGT_DISABLE,
 507         ISCSI_PARAM_DISCOVERY_SESS,
 508         ISCSI_PARAM_PORTAL_TYPE,
 509         ISCSI_PARAM_CHAP_AUTH_EN,
 510         ISCSI_PARAM_DISCOVERY_LOGOUT_EN,
 511         ISCSI_PARAM_BIDI_CHAP_EN,
 512         ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL,
 513
 514         ISCSI_PARAM_DEF_TIME2WAIT,
 515         ISCSI_PARAM_DEF_TIME2RETAIN,
 516         ISCSI_PARAM_MAX_SEGMENT_SIZE,
 517         ISCSI_PARAM_STATSN,
 518         ISCSI_PARAM_KEEPALIVE_TMO,
 519         ISCSI_PARAM_LOCAL_PORT,
 520         ISCSI_PARAM_TSID,
 521         ISCSI_PARAM_DEF_TASKMGMT_TMO,
 522
 523         ISCSI_PARAM_TCP_TIMESTAMP_STAT,
 524         ISCSI_PARAM_TCP_WSF_DISABLE,
 525         ISCSI_PARAM_TCP_NAGLE_DISABLE,
 526         ISCSI_PARAM_TCP_TIMER_SCALE,
 527         ISCSI_PARAM_TCP_TIMESTAMP_EN,
 528         ISCSI_PARAM_TCP_XMIT_WSF,
 529         ISCSI_PARAM_TCP_RECV_WSF,
 530         ISCSI_PARAM_IP_FRAGMENT_DISABLE,
 531         ISCSI_PARAM_IPV4_TOS,
 532         ISCSI_PARAM_IPV6_TC,
 533         ISCSI_PARAM_IPV6_FLOW_LABEL,
 534         ISCSI_PARAM_IS_FW_ASSIGNED_IPV6,
 535
 536         ISCSI_PARAM_DISCOVERY_PARENT_IDX,
 537         ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
 538         /* must always be last */
 539         ISCSI_PARAM_MAX,
 540 };
 541
 542 /* iSCSI HBA params */
 543 enum iscsi_host_param {
 544         ISCSI_HOST_PARAM_HWADDRESS,
 545         ISCSI_HOST_PARAM_INITIATOR_NAME,
 546         ISCSI_HOST_PARAM_NETDEV_NAME,
 547         ISCSI_HOST_PARAM_IPADDRESS,
 548         ISCSI_HOST_PARAM_PORT_STATE,
 549         ISCSI_HOST_PARAM_PORT_SPEED,
 550         ISCSI_HOST_PARAM_MAX,
 551 };
 552
 553 /* portal type */
 554 #define PORTAL_TYPE_IPV4        "ipv4"
 555 #define PORTAL_TYPE_IPV6        "ipv6"
 556
 557 /* iSCSI Flash Target params */
 558 enum iscsi_flashnode_param {
 559         ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6,
 560         ISCSI_FLASHNODE_PORTAL_TYPE,
 561         ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE,
 562         ISCSI_FLASHNODE_DISCOVERY_SESS,
 563         ISCSI_FLASHNODE_ENTRY_EN,
 564         ISCSI_FLASHNODE_HDR_DGST_EN,
 565         ISCSI_FLASHNODE_DATA_DGST_EN,
 566         ISCSI_FLASHNODE_IMM_DATA_EN,
 567         ISCSI_FLASHNODE_INITIAL_R2T_EN,
 568         ISCSI_FLASHNODE_DATASEQ_INORDER,
 569         ISCSI_FLASHNODE_PDU_INORDER,
 570         ISCSI_FLASHNODE_CHAP_AUTH_EN,
 571         ISCSI_FLASHNODE_SNACK_REQ_EN,
 572         ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN,
 573         ISCSI_FLASHNODE_BIDI_CHAP_EN,
 574         /* make authentication for discovery sessions optional */
 575         ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL,
 576         ISCSI_FLASHNODE_ERL,
 577         ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT,
 578         ISCSI_FLASHNODE_TCP_NAGLE_DISABLE,
 579         ISCSI_FLASHNODE_TCP_WSF_DISABLE,
 580         ISCSI_FLASHNODE_TCP_TIMER_SCALE,
 581         ISCSI_FLASHNODE_TCP_TIMESTAMP_EN,
 582         ISCSI_FLASHNODE_IP_FRAG_DISABLE,
 583         ISCSI_FLASHNODE_MAX_RECV_DLENGTH,
 584         ISCSI_FLASHNODE_MAX_XMIT_DLENGTH,
 585         ISCSI_FLASHNODE_FIRST_BURST,
 586         ISCSI_FLASHNODE_DEF_TIME2WAIT,
 587         ISCSI_FLASHNODE_DEF_TIME2RETAIN,
 588         ISCSI_FLASHNODE_MAX_R2T,
 589         ISCSI_FLASHNODE_KEEPALIVE_TMO,
 590         ISCSI_FLASHNODE_ISID,
 591         ISCSI_FLASHNODE_TSID,
 592         ISCSI_FLASHNODE_PORT,
 593         ISCSI_FLASHNODE_MAX_BURST,
 594         ISCSI_FLASHNODE_DEF_TASKMGMT_TMO,
 595         ISCSI_FLASHNODE_IPADDR,
 596         ISCSI_FLASHNODE_ALIAS,
 597         ISCSI_FLASHNODE_REDIRECT_IPADDR,
 598         ISCSI_FLASHNODE_MAX_SEGMENT_SIZE,
 599         ISCSI_FLASHNODE_LOCAL_PORT,
 600         ISCSI_FLASHNODE_IPV4_TOS,
 601         ISCSI_FLASHNODE_IPV6_TC,
 602         ISCSI_FLASHNODE_IPV6_FLOW_LABEL,
 603         ISCSI_FLASHNODE_NAME,
 604         ISCSI_FLASHNODE_TPGT,
 605         ISCSI_FLASHNODE_LINK_LOCAL_IPV6,
 606         ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX,
 607         ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE,
 608         ISCSI_FLASHNODE_TCP_XMIT_WSF,
 609         ISCSI_FLASHNODE_TCP_RECV_WSF,
 610         ISCSI_FLASHNODE_CHAP_IN_IDX,
 611         ISCSI_FLASHNODE_CHAP_OUT_IDX,
 612         ISCSI_FLASHNODE_USERNAME,
 613         ISCSI_FLASHNODE_USERNAME_IN,
 614         ISCSI_FLASHNODE_PASSWORD,
 615         ISCSI_FLASHNODE_PASSWORD_IN,
 616         ISCSI_FLASHNODE_STATSN,
 617         ISCSI_FLASHNODE_EXP_STATSN,
 618         ISCSI_FLASHNODE_IS_BOOT_TGT,
 619
 620         ISCSI_FLASHNODE_MAX,
 621 };
 622
 623 struct iscsi_flashnode_param_info {
 624         uint32_t len;           /* Actual length of the param */
 625         uint16_t param;         /* iscsi param value */
 626         uint8_t value[0];       /* length sized value follows */
 627 } __packed;
 628
 629 enum iscsi_discovery_parent_type {
 630         ISCSI_DISC_PARENT_UNKNOWN       = 0x1,
 631         ISCSI_DISC_PARENT_SENDTGT       = 0x2,
 632         ISCSI_DISC_PARENT_ISNS          = 0x3,
 633 };
 634
 635 /* iSCSI port Speed */
 636 enum iscsi_port_speed {
 637         ISCSI_PORT_SPEED_UNKNOWN        = 0x1,
 638         ISCSI_PORT_SPEED_10MBPS         = 0x2,
 639         ISCSI_PORT_SPEED_100MBPS        = 0x4,
 640         ISCSI_PORT_SPEED_1GBPS          = 0x8,
 641         ISCSI_PORT_SPEED_10GBPS         = 0x10,
 642 };
 643
 644 /* iSCSI port state */
 645 enum iscsi_port_state {
 646         ISCSI_PORT_STATE_DOWN           = 0x1,
 647         ISCSI_PORT_STATE_UP             = 0x2,
 648 };
 649
 650 /* iSCSI PING status/error code */
 651 enum iscsi_ping_status_code {
 652         ISCSI_PING_SUCCESS                      = 0,
 653         ISCSI_PING_FW_DISABLED                  = 0x1,
 654         ISCSI_PING_IPADDR_INVALID               = 0x2,
 655         ISCSI_PING_LINKLOCAL_IPV6_ADDR_INVALID  = 0x3,
 656         ISCSI_PING_TIMEOUT                      = 0x4,
 657         ISCSI_PING_INVALID_DEST_ADDR            = 0x5,
 658         ISCSI_PING_OVERSIZE_PACKET              = 0x6,
 659         ISCSI_PING_ICMP_ERROR                   = 0x7,
 660         ISCSI_PING_MAX_REQ_EXCEEDED             = 0x8,
 661         ISCSI_PING_NO_ARP_RECEIVED              = 0x9,
 662 };
 663
 664 #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
 665 #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
 666
 667 /*
 668  * These flags presents iSCSI Data-Path capabilities.
 669  */
 670 #define CAP_RECOVERY_L0         0x1
 671 #define CAP_RECOVERY_L1         0x2
 672 #define CAP_RECOVERY_L2         0x4
 673 #define CAP_MULTI_R2T           0x8
 674 #define CAP_HDRDGST             0x10
 675 #define CAP_DATADGST            0x20
 676 #define CAP_MULTI_CONN          0x40
 677 #define CAP_TEXT_NEGO           0x80
 678 #define CAP_MARKERS             0x100
 679 #define CAP_FW_DB               0x200
 680 #define CAP_SENDTARGETS_OFFLOAD 0x400   /* offload discovery process */
 681 #define CAP_DATA_PATH_OFFLOAD   0x800   /* offload entire IO path */
 682 #define CAP_DIGEST_OFFLOAD      0x1000  /* offload hdr and data digests */
 683 #define CAP_PADDING_OFFLOAD     0x2000  /* offload padding insertion, removal,
 684                                          and verification */
 685 #define CAP_LOGIN_OFFLOAD       0x4000  /* offload session login */
 686
 687 /*
 688  * These flags describes reason of stop_conn() call
 689  */
 690 #define STOP_CONN_TERM          0x1
 691 #define STOP_CONN_SUSPEND       0x2
 692 #define STOP_CONN_RECOVER       0x3
 693
 694 #define ISCSI_STATS_CUSTOM_MAX          32
 695 #define ISCSI_STATS_CUSTOM_DESC_MAX     64
 696 struct iscsi_stats_custom {
 697         char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
 698         uint64_t value;
 699 };
 700
 701 /*
 702  * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
 703  *
 704  * Note: this structure contains counters collected on per-connection basis.
 705  */
 706 struct iscsi_stats {
 707         /* octets */
 708         uint64_t txdata_octets;
 709         uint64_t rxdata_octets;
 710
 711         /* xmit pdus */
 712         uint32_t noptx_pdus;
 713         uint32_t scsicmd_pdus;
 714         uint32_t tmfcmd_pdus;
 715         uint32_t login_pdus;
 716         uint32_t text_pdus;
 717         uint32_t dataout_pdus;
 718         uint32_t logout_pdus;
 719         uint32_t snack_pdus;
 720
 721         /* recv pdus */
 722         uint32_t noprx_pdus;
 723         uint32_t scsirsp_pdus;
 724         uint32_t tmfrsp_pdus;
 725         uint32_t textrsp_pdus;
 726         uint32_t datain_pdus;
 727         uint32_t logoutrsp_pdus;
 728         uint32_t r2t_pdus;
 729         uint32_t async_pdus;
 730         uint32_t rjt_pdus;
 731
 732         /* errors */
 733         uint32_t digest_err;
 734         uint32_t timeout_err;
 735
 736         /*
 737          * iSCSI Custom Statistics support, i.e. Transport could
 738          * extend existing MIB statistics with its own specific statistics
 739          * up to ISCSI_STATS_CUSTOM_MAX
 740          */
 741         uint32_t custom_length;
 742         struct iscsi_stats_custom custom[0]
 743                 __attribute__ ((aligned (sizeof(uint64_t))));
 744 };
 745
 746 enum chap_type_e {
 747         CHAP_TYPE_OUT,
 748         CHAP_TYPE_IN,
 749 };
 750
 751 enum iscsi_chap_param {
 752         ISCSI_CHAP_PARAM_INDEX,
 753         ISCSI_CHAP_PARAM_CHAP_TYPE,
 754         ISCSI_CHAP_PARAM_USERNAME,
 755         ISCSI_CHAP_PARAM_PASSWORD,
 756         ISCSI_CHAP_PARAM_PASSWORD_LEN
 757 };
 758
 759 #define ISCSI_CHAP_AUTH_NAME_MAX_LEN    256
 760 #define ISCSI_CHAP_AUTH_SECRET_MAX_LEN  256
 761 struct iscsi_chap_rec {
 762         uint16_t chap_tbl_idx;
 763         enum chap_type_e chap_type;
 764         char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
 765         uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
 766         uint8_t password_length;
 767 };
 768
 769 #endif