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TOMOYO Linux Cross Reference
Linux/include/scsi/iscsi_if.h

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  1 /* SPDX-License-Identifier: GPL-2.0-or-later */
  2 /*
  3  * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
  4  *
  5  * Copyright (C) 2005 Dmitry Yusupov
  6  * Copyright (C) 2005 Alex Aizman
  7  * maintained by open-iscsi@googlegroups.com
  8  */
  9 
 10 #ifndef ISCSI_IF_H
 11 #define ISCSI_IF_H
 12 
 13 #include <scsi/iscsi_proto.h>
 14 #include <linux/in.h>
 15 #include <linux/in6.h>
 16 
 17 #define ISCSI_NL_GRP_ISCSID     1
 18 #define ISCSI_NL_GRP_UIP        2
 19 
 20 #define UEVENT_BASE                     10
 21 #define KEVENT_BASE                     100
 22 #define ISCSI_ERR_BASE                  1000
 23 
 24 enum iscsi_uevent_e {
 25         ISCSI_UEVENT_UNKNOWN            = 0,
 26 
 27         /* down events */
 28         ISCSI_UEVENT_CREATE_SESSION     = UEVENT_BASE + 1,
 29         ISCSI_UEVENT_DESTROY_SESSION    = UEVENT_BASE + 2,
 30         ISCSI_UEVENT_CREATE_CONN        = UEVENT_BASE + 3,
 31         ISCSI_UEVENT_DESTROY_CONN       = UEVENT_BASE + 4,
 32         ISCSI_UEVENT_BIND_CONN          = UEVENT_BASE + 5,
 33         ISCSI_UEVENT_SET_PARAM          = UEVENT_BASE + 6,
 34         ISCSI_UEVENT_START_CONN         = UEVENT_BASE + 7,
 35         ISCSI_UEVENT_STOP_CONN          = UEVENT_BASE + 8,
 36         ISCSI_UEVENT_SEND_PDU           = UEVENT_BASE + 9,
 37         ISCSI_UEVENT_GET_STATS          = UEVENT_BASE + 10,
 38         ISCSI_UEVENT_GET_PARAM          = UEVENT_BASE + 11,
 39 
 40         ISCSI_UEVENT_TRANSPORT_EP_CONNECT       = UEVENT_BASE + 12,
 41         ISCSI_UEVENT_TRANSPORT_EP_POLL          = UEVENT_BASE + 13,
 42         ISCSI_UEVENT_TRANSPORT_EP_DISCONNECT    = UEVENT_BASE + 14,
 43 
 44         ISCSI_UEVENT_TGT_DSCVR          = UEVENT_BASE + 15,
 45         ISCSI_UEVENT_SET_HOST_PARAM     = UEVENT_BASE + 16,
 46         ISCSI_UEVENT_UNBIND_SESSION     = UEVENT_BASE + 17,
 47         ISCSI_UEVENT_CREATE_BOUND_SESSION               = UEVENT_BASE + 18,
 48         ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST  = UEVENT_BASE + 19,
 49 
 50         ISCSI_UEVENT_PATH_UPDATE        = UEVENT_BASE + 20,
 51         ISCSI_UEVENT_SET_IFACE_PARAMS   = UEVENT_BASE + 21,
 52         ISCSI_UEVENT_PING               = UEVENT_BASE + 22,
 53         ISCSI_UEVENT_GET_CHAP           = UEVENT_BASE + 23,
 54         ISCSI_UEVENT_DELETE_CHAP        = UEVENT_BASE + 24,
 55         ISCSI_UEVENT_SET_FLASHNODE_PARAMS       = UEVENT_BASE + 25,
 56         ISCSI_UEVENT_NEW_FLASHNODE      = UEVENT_BASE + 26,
 57         ISCSI_UEVENT_DEL_FLASHNODE      = UEVENT_BASE + 27,
 58         ISCSI_UEVENT_LOGIN_FLASHNODE    = UEVENT_BASE + 28,
 59         ISCSI_UEVENT_LOGOUT_FLASHNODE   = UEVENT_BASE + 29,
 60         ISCSI_UEVENT_LOGOUT_FLASHNODE_SID       = UEVENT_BASE + 30,
 61         ISCSI_UEVENT_SET_CHAP           = UEVENT_BASE + 31,
 62         ISCSI_UEVENT_GET_HOST_STATS     = UEVENT_BASE + 32,
 63 
 64         /* up events */
 65         ISCSI_KEVENT_RECV_PDU           = KEVENT_BASE + 1,
 66         ISCSI_KEVENT_CONN_ERROR         = KEVENT_BASE + 2,
 67         ISCSI_KEVENT_IF_ERROR           = KEVENT_BASE + 3,
 68         ISCSI_KEVENT_DESTROY_SESSION    = KEVENT_BASE + 4,
 69         ISCSI_KEVENT_UNBIND_SESSION     = KEVENT_BASE + 5,
 70         ISCSI_KEVENT_CREATE_SESSION     = KEVENT_BASE + 6,
 71 
 72         ISCSI_KEVENT_PATH_REQ           = KEVENT_BASE + 7,
 73         ISCSI_KEVENT_IF_DOWN            = KEVENT_BASE + 8,
 74         ISCSI_KEVENT_CONN_LOGIN_STATE   = KEVENT_BASE + 9,
 75         ISCSI_KEVENT_HOST_EVENT         = KEVENT_BASE + 10,
 76         ISCSI_KEVENT_PING_COMP          = KEVENT_BASE + 11,
 77 };
 78 
 79 enum iscsi_tgt_dscvr {
 80         ISCSI_TGT_DSCVR_SEND_TARGETS    = 1,
 81         ISCSI_TGT_DSCVR_ISNS            = 2,
 82         ISCSI_TGT_DSCVR_SLP             = 3,
 83 };
 84 
 85 enum iscsi_host_event_code {
 86         ISCSI_EVENT_LINKUP              = 1,
 87         ISCSI_EVENT_LINKDOWN,
 88         /* must always be last */
 89         ISCSI_EVENT_MAX,
 90 };
 91 
 92 struct iscsi_uevent {
 93         uint32_t type; /* k/u events type */
 94         uint32_t iferror; /* carries interface or resource errors */
 95         uint64_t transport_handle;
 96 
 97         union {
 98                 /* messages u -> k */
 99                 struct msg_create_session {
100                         uint32_t        initial_cmdsn;
101                         uint16_t        cmds_max;
102                         uint16_t        queue_depth;
103                 } c_session;
104                 struct msg_create_bound_session {
105                         uint64_t        ep_handle;
106                         uint32_t        initial_cmdsn;
107                         uint16_t        cmds_max;
108                         uint16_t        queue_depth;
109                 } c_bound_session;
110                 struct msg_destroy_session {
111                         uint32_t        sid;
112                 } d_session;
113                 struct msg_create_conn {
114                         uint32_t        sid;
115                         uint32_t        cid;
116                 } c_conn;
117                 struct msg_bind_conn {
118                         uint32_t        sid;
119                         uint32_t        cid;
120                         uint64_t        transport_eph;
121                         uint32_t        is_leading;
122                 } b_conn;
123                 struct msg_destroy_conn {
124                         uint32_t        sid;
125                         uint32_t        cid;
126                 } d_conn;
127                 struct msg_send_pdu {
128                         uint32_t        sid;
129                         uint32_t        cid;
130                         uint32_t        hdr_size;
131                         uint32_t        data_size;
132                 } send_pdu;
133                 struct msg_set_param {
134                         uint32_t        sid;
135                         uint32_t        cid;
136                         uint32_t        param; /* enum iscsi_param */
137                         uint32_t        len;
138                 } set_param;
139                 struct msg_start_conn {
140                         uint32_t        sid;
141                         uint32_t        cid;
142                 } start_conn;
143                 struct msg_stop_conn {
144                         uint32_t        sid;
145                         uint32_t        cid;
146                         uint64_t        conn_handle;
147                         uint32_t        flag;
148                 } stop_conn;
149                 struct msg_get_stats {
150                         uint32_t        sid;
151                         uint32_t        cid;
152                 } get_stats;
153                 struct msg_transport_connect {
154                         uint32_t        non_blocking;
155                 } ep_connect;
156                 struct msg_transport_connect_through_host {
157                         uint32_t        host_no;
158                         uint32_t        non_blocking;
159                 } ep_connect_through_host;
160                 struct msg_transport_poll {
161                         uint64_t        ep_handle;
162                         uint32_t        timeout_ms;
163                 } ep_poll;
164                 struct msg_transport_disconnect {
165                         uint64_t        ep_handle;
166                 } ep_disconnect;
167                 struct msg_tgt_dscvr {
168                         enum iscsi_tgt_dscvr    type;
169                         uint32_t        host_no;
170                         /*
171                          * enable = 1 to establish a new connection
172                          * with the server. enable = 0 to disconnect
173                          * from the server. Used primarily to switch
174                          * from one iSNS server to another.
175                          */
176                         uint32_t        enable;
177                 } tgt_dscvr;
178                 struct msg_set_host_param {
179                         uint32_t        host_no;
180                         uint32_t        param; /* enum iscsi_host_param */
181                         uint32_t        len;
182                 } set_host_param;
183                 struct msg_set_path {
184                         uint32_t        host_no;
185                 } set_path;
186                 struct msg_set_iface_params {
187                         uint32_t        host_no;
188                         uint32_t        count;
189                 } set_iface_params;
190                 struct msg_iscsi_ping {
191                         uint32_t        host_no;
192                         uint32_t        iface_num;
193                         uint32_t        iface_type;
194                         uint32_t        payload_size;
195                         uint32_t        pid;    /* unique ping id associated
196                                                    with each ping request */
197                 } iscsi_ping;
198                 struct msg_get_chap {
199                         uint32_t        host_no;
200                         uint32_t        num_entries; /* number of CHAP entries
201                                                       * on request, number of
202                                                       * valid CHAP entries on
203                                                       * response */
204                         uint16_t        chap_tbl_idx;
205                 } get_chap;
206                 struct msg_delete_chap {
207                        uint32_t        host_no;
208                        uint16_t        chap_tbl_idx;
209                 } delete_chap;
210                 struct msg_set_flashnode_param {
211                         uint32_t        host_no;
212                         uint32_t        flashnode_idx;
213                         uint32_t        count;
214                 } set_flashnode;
215                 struct msg_new_flashnode {
216                         uint32_t        host_no;
217                         uint32_t        len;
218                 } new_flashnode;
219                 struct msg_del_flashnode {
220                         uint32_t        host_no;
221                         uint32_t        flashnode_idx;
222                 } del_flashnode;
223                 struct msg_login_flashnode {
224                         uint32_t        host_no;
225                         uint32_t        flashnode_idx;
226                 } login_flashnode;
227                 struct msg_logout_flashnode {
228                         uint32_t        host_no;
229                         uint32_t        flashnode_idx;
230                 } logout_flashnode;
231                 struct msg_logout_flashnode_sid {
232                         uint32_t        host_no;
233                         uint32_t        sid;
234                 } logout_flashnode_sid;
235                 struct msg_get_host_stats {
236                         uint32_t host_no;
237                 } get_host_stats;
238         } u;
239         union {
240                 /* messages k -> u */
241                 int                     retcode;
242                 struct msg_create_session_ret {
243                         uint32_t        sid;
244                         uint32_t        host_no;
245                 } c_session_ret;
246                 struct msg_create_conn_ret {
247                         uint32_t        sid;
248                         uint32_t        cid;
249                 } c_conn_ret;
250                 struct msg_unbind_session {
251                         uint32_t        sid;
252                         uint32_t        host_no;
253                 } unbind_session;
254                 struct msg_recv_req {
255                         uint32_t        sid;
256                         uint32_t        cid;
257                         uint64_t        recv_handle;
258                 } recv_req;
259                 struct msg_conn_login {
260                         uint32_t        sid;
261                         uint32_t        cid;
262                         uint32_t        state; /* enum iscsi_conn_state */
263                 } conn_login;
264                 struct msg_conn_error {
265                         uint32_t        sid;
266                         uint32_t        cid;
267                         uint32_t        error; /* enum iscsi_err */
268                 } connerror;
269                 struct msg_session_destroyed {
270                         uint32_t        host_no;
271                         uint32_t        sid;
272                 } d_session;
273                 struct msg_transport_connect_ret {
274                         uint64_t        handle;
275                 } ep_connect_ret;
276                 struct msg_req_path {
277                         uint32_t        host_no;
278                 } req_path;
279                 struct msg_notify_if_down {
280                         uint32_t        host_no;
281                 } notify_if_down;
282                 struct msg_host_event {
283                         uint32_t        host_no;
284                         uint32_t        data_size;
285                         enum iscsi_host_event_code code;
286                 } host_event;
287                 struct msg_ping_comp {
288                         uint32_t        host_no;
289                         uint32_t        status; /* enum
290                                                  * iscsi_ping_status_code */
291                         uint32_t        pid;    /* unique ping id associated
292                                                    with each ping request */
293                         uint32_t        data_size;
294                 } ping_comp;
295                 struct msg_new_flashnode_ret {
296                         uint32_t        flashnode_idx;
297                 } new_flashnode_ret;
298         } r;
299 } __attribute__ ((aligned (sizeof(uint64_t))));
300 
301 enum iscsi_param_type {
302         ISCSI_PARAM,            /* iscsi_param (session, conn, target, LU) */
303         ISCSI_HOST_PARAM,       /* iscsi_host_param */
304         ISCSI_NET_PARAM,        /* iscsi_net_param */
305         ISCSI_FLASHNODE_PARAM,  /* iscsi_flashnode_param */
306         ISCSI_CHAP_PARAM,       /* iscsi_chap_param */
307         ISCSI_IFACE_PARAM,      /* iscsi_iface_param */
308 };
309 
310 /* structure for minimalist usecase */
311 struct iscsi_param_info {
312         uint32_t len;           /* Actual length of the param value */
313         uint16_t param;         /* iscsi param */
314         uint8_t value[0];       /* length sized value follows */
315 } __packed;
316 
317 struct iscsi_iface_param_info {
318         uint32_t iface_num;     /* iface number, 0 - n */
319         uint32_t len;           /* Actual length of the param */
320         uint16_t param;         /* iscsi param value */
321         uint8_t iface_type;     /* IPv4 or IPv6 */
322         uint8_t param_type;     /* iscsi_param_type */
323         uint8_t value[0];       /* length sized value follows */
324 } __packed;
325 
326 /*
327  * To keep the struct iscsi_uevent size the same for userspace code
328  * compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
329  * ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
330  * struct iscsi_uevent in the NETLINK_ISCSI message.
331  */
332 struct iscsi_path {
333         uint64_t        handle;
334         uint8_t         mac_addr[6];
335         uint8_t         mac_addr_old[6];
336         uint32_t        ip_addr_len;    /* 4 or 16 */
337         union {
338                 struct in_addr  v4_addr;
339                 struct in6_addr v6_addr;
340         } src;
341         union {
342                 struct in_addr  v4_addr;
343                 struct in6_addr v6_addr;
344         } dst;
345         uint16_t        vlan_id;
346         uint16_t        pmtu;
347 } __attribute__ ((aligned (sizeof(uint64_t))));
348 
349 /* iscsi iface enabled/disabled setting */
350 #define ISCSI_IFACE_DISABLE     0x01
351 #define ISCSI_IFACE_ENABLE      0x02
352 
353 /* ipv4 bootproto */
354 #define ISCSI_BOOTPROTO_STATIC          0x01
355 #define ISCSI_BOOTPROTO_DHCP            0x02
356 
357 /* ipv6 addr autoconfig type */
358 #define ISCSI_IPV6_AUTOCFG_DISABLE              0x01
359 #define ISCSI_IPV6_AUTOCFG_ND_ENABLE            0x02
360 #define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE        0x03
361 
362 /* ipv6 link local addr type */
363 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE     0x01
364 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE    0x02
365 
366 /* ipv6 router addr type */
367 #define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE        0x01
368 #define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE       0x02
369 
370 #define ISCSI_IFACE_TYPE_IPV4           0x01
371 #define ISCSI_IFACE_TYPE_IPV6           0x02
372 
373 #define ISCSI_MAX_VLAN_ID               4095
374 #define ISCSI_MAX_VLAN_PRIORITY         7
375 
376 /* iscsi vlan enable/disabled setting */
377 #define ISCSI_VLAN_DISABLE      0x01
378 #define ISCSI_VLAN_ENABLE       0x02
379 
380 /* iscsi generic enable/disabled setting for various features */
381 #define ISCSI_NET_PARAM_DISABLE         0x01
382 #define ISCSI_NET_PARAM_ENABLE          0x02
383 
384 /* iSCSI network params */
385 enum iscsi_net_param {
386         ISCSI_NET_PARAM_IPV4_ADDR               = 1,
387         ISCSI_NET_PARAM_IPV4_SUBNET,
388         ISCSI_NET_PARAM_IPV4_GW,
389         ISCSI_NET_PARAM_IPV4_BOOTPROTO,
390         ISCSI_NET_PARAM_MAC,
391         ISCSI_NET_PARAM_IPV6_LINKLOCAL,
392         ISCSI_NET_PARAM_IPV6_ADDR,
393         ISCSI_NET_PARAM_IPV6_ROUTER,
394         ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG,
395         ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG,
396         ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG,
397         ISCSI_NET_PARAM_IFACE_ENABLE,
398         ISCSI_NET_PARAM_VLAN_ID,
399         ISCSI_NET_PARAM_VLAN_PRIORITY,
400         ISCSI_NET_PARAM_VLAN_ENABLED,
401         ISCSI_NET_PARAM_VLAN_TAG,
402         ISCSI_NET_PARAM_IFACE_TYPE,
403         ISCSI_NET_PARAM_IFACE_NAME,
404         ISCSI_NET_PARAM_MTU,
405         ISCSI_NET_PARAM_PORT,
406         ISCSI_NET_PARAM_IPADDR_STATE,
407         ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE,
408         ISCSI_NET_PARAM_IPV6_ROUTER_STATE,
409         ISCSI_NET_PARAM_DELAYED_ACK_EN,
410         ISCSI_NET_PARAM_TCP_NAGLE_DISABLE,
411         ISCSI_NET_PARAM_TCP_WSF_DISABLE,
412         ISCSI_NET_PARAM_TCP_WSF,
413         ISCSI_NET_PARAM_TCP_TIMER_SCALE,
414         ISCSI_NET_PARAM_TCP_TIMESTAMP_EN,
415         ISCSI_NET_PARAM_CACHE_ID,
416         ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN,
417         ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN,
418         ISCSI_NET_PARAM_IPV4_TOS_EN,
419         ISCSI_NET_PARAM_IPV4_TOS,
420         ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN,
421         ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN,
422         ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID,
423         ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN,
424         ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN,
425         ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID,
426         ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN,
427         ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE,
428         ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN,
429         ISCSI_NET_PARAM_IPV4_TTL,
430         ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN,
431         ISCSI_NET_PARAM_IPV6_MLD_EN,
432         ISCSI_NET_PARAM_IPV6_FLOW_LABEL,
433         ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS,
434         ISCSI_NET_PARAM_IPV6_HOP_LIMIT,
435         ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO,
436         ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME,
437         ISCSI_NET_PARAM_IPV6_ND_STALE_TMO,
438         ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT,
439         ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU,
440         ISCSI_NET_PARAM_REDIRECT_EN,
441 };
442 
443 enum iscsi_ipaddress_state {
444         ISCSI_IPDDRESS_STATE_UNCONFIGURED,
445         ISCSI_IPDDRESS_STATE_ACQUIRING,
446         ISCSI_IPDDRESS_STATE_TENTATIVE,
447         ISCSI_IPDDRESS_STATE_VALID,
448         ISCSI_IPDDRESS_STATE_DISABLING,
449         ISCSI_IPDDRESS_STATE_INVALID,
450         ISCSI_IPDDRESS_STATE_DEPRECATED,
451 };
452 
453 enum iscsi_router_state {
454         ISCSI_ROUTER_STATE_UNKNOWN,
455         ISCSI_ROUTER_STATE_ADVERTISED,
456         ISCSI_ROUTER_STATE_MANUAL,
457         ISCSI_ROUTER_STATE_STALE,
458 };
459 
460 /* iSCSI specific settings params for iface */
461 enum iscsi_iface_param {
462         ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO,
463         ISCSI_IFACE_PARAM_HDRDGST_EN,
464         ISCSI_IFACE_PARAM_DATADGST_EN,
465         ISCSI_IFACE_PARAM_IMM_DATA_EN,
466         ISCSI_IFACE_PARAM_INITIAL_R2T_EN,
467         ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN,
468         ISCSI_IFACE_PARAM_PDU_INORDER_EN,
469         ISCSI_IFACE_PARAM_ERL,
470         ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH,
471         ISCSI_IFACE_PARAM_FIRST_BURST,
472         ISCSI_IFACE_PARAM_MAX_R2T,
473         ISCSI_IFACE_PARAM_MAX_BURST,
474         ISCSI_IFACE_PARAM_CHAP_AUTH_EN,
475         ISCSI_IFACE_PARAM_BIDI_CHAP_EN,
476         ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL,
477         ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN,
478         ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN,
479         ISCSI_IFACE_PARAM_INITIATOR_NAME,
480 };
481 
482 enum iscsi_conn_state {
483         ISCSI_CONN_STATE_FREE,
484         ISCSI_CONN_STATE_XPT_WAIT,
485         ISCSI_CONN_STATE_IN_LOGIN,
486         ISCSI_CONN_STATE_LOGGED_IN,
487         ISCSI_CONN_STATE_IN_LOGOUT,
488         ISCSI_CONN_STATE_LOGOUT_REQUESTED,
489         ISCSI_CONN_STATE_CLEANUP_WAIT,
490 };
491 
492 /*
493  * Common error codes
494  */
495 enum iscsi_err {
496         ISCSI_OK                        = 0,
497 
498         ISCSI_ERR_DATASN                = ISCSI_ERR_BASE + 1,
499         ISCSI_ERR_DATA_OFFSET           = ISCSI_ERR_BASE + 2,
500         ISCSI_ERR_MAX_CMDSN             = ISCSI_ERR_BASE + 3,
501         ISCSI_ERR_EXP_CMDSN             = ISCSI_ERR_BASE + 4,
502         ISCSI_ERR_BAD_OPCODE            = ISCSI_ERR_BASE + 5,
503         ISCSI_ERR_DATALEN               = ISCSI_ERR_BASE + 6,
504         ISCSI_ERR_AHSLEN                = ISCSI_ERR_BASE + 7,
505         ISCSI_ERR_PROTO                 = ISCSI_ERR_BASE + 8,
506         ISCSI_ERR_LUN                   = ISCSI_ERR_BASE + 9,
507         ISCSI_ERR_BAD_ITT               = ISCSI_ERR_BASE + 10,
508         ISCSI_ERR_CONN_FAILED           = ISCSI_ERR_BASE + 11,
509         ISCSI_ERR_R2TSN                 = ISCSI_ERR_BASE + 12,
510         ISCSI_ERR_SESSION_FAILED        = ISCSI_ERR_BASE + 13,
511         ISCSI_ERR_HDR_DGST              = ISCSI_ERR_BASE + 14,
512         ISCSI_ERR_DATA_DGST             = ISCSI_ERR_BASE + 15,
513         ISCSI_ERR_PARAM_NOT_FOUND       = ISCSI_ERR_BASE + 16,
514         ISCSI_ERR_NO_SCSI_CMD           = ISCSI_ERR_BASE + 17,
515         ISCSI_ERR_INVALID_HOST          = ISCSI_ERR_BASE + 18,
516         ISCSI_ERR_XMIT_FAILED           = ISCSI_ERR_BASE + 19,
517         ISCSI_ERR_TCP_CONN_CLOSE        = ISCSI_ERR_BASE + 20,
518         ISCSI_ERR_SCSI_EH_SESSION_RST   = ISCSI_ERR_BASE + 21,
519         ISCSI_ERR_NOP_TIMEDOUT          = ISCSI_ERR_BASE + 22,
520 };
521 
522 /*
523  * iSCSI Parameters (RFC3720)
524  */
525 enum iscsi_param {
526         /* passed in using netlink set param */
527         ISCSI_PARAM_MAX_RECV_DLENGTH,
528         ISCSI_PARAM_MAX_XMIT_DLENGTH,
529         ISCSI_PARAM_HDRDGST_EN,
530         ISCSI_PARAM_DATADGST_EN,
531         ISCSI_PARAM_INITIAL_R2T_EN,
532         ISCSI_PARAM_MAX_R2T,
533         ISCSI_PARAM_IMM_DATA_EN,
534         ISCSI_PARAM_FIRST_BURST,
535         ISCSI_PARAM_MAX_BURST,
536         ISCSI_PARAM_PDU_INORDER_EN,
537         ISCSI_PARAM_DATASEQ_INORDER_EN,
538         ISCSI_PARAM_ERL,
539         ISCSI_PARAM_IFMARKER_EN,
540         ISCSI_PARAM_OFMARKER_EN,
541         ISCSI_PARAM_EXP_STATSN,
542         ISCSI_PARAM_TARGET_NAME,
543         ISCSI_PARAM_TPGT,
544         ISCSI_PARAM_PERSISTENT_ADDRESS,
545         ISCSI_PARAM_PERSISTENT_PORT,
546         ISCSI_PARAM_SESS_RECOVERY_TMO,
547 
548         /* passed in through bind conn using transport_fd */
549         ISCSI_PARAM_CONN_PORT,
550         ISCSI_PARAM_CONN_ADDRESS,
551 
552         ISCSI_PARAM_USERNAME,
553         ISCSI_PARAM_USERNAME_IN,
554         ISCSI_PARAM_PASSWORD,
555         ISCSI_PARAM_PASSWORD_IN,
556 
557         ISCSI_PARAM_FAST_ABORT,
558         ISCSI_PARAM_ABORT_TMO,
559         ISCSI_PARAM_LU_RESET_TMO,
560         ISCSI_PARAM_HOST_RESET_TMO,
561 
562         ISCSI_PARAM_PING_TMO,
563         ISCSI_PARAM_RECV_TMO,
564 
565         ISCSI_PARAM_IFACE_NAME,
566         ISCSI_PARAM_ISID,
567         ISCSI_PARAM_INITIATOR_NAME,
568 
569         ISCSI_PARAM_TGT_RESET_TMO,
570         ISCSI_PARAM_TARGET_ALIAS,
571 
572         ISCSI_PARAM_CHAP_IN_IDX,
573         ISCSI_PARAM_CHAP_OUT_IDX,
574 
575         ISCSI_PARAM_BOOT_ROOT,
576         ISCSI_PARAM_BOOT_NIC,
577         ISCSI_PARAM_BOOT_TARGET,
578 
579         ISCSI_PARAM_AUTO_SND_TGT_DISABLE,
580         ISCSI_PARAM_DISCOVERY_SESS,
581         ISCSI_PARAM_PORTAL_TYPE,
582         ISCSI_PARAM_CHAP_AUTH_EN,
583         ISCSI_PARAM_DISCOVERY_LOGOUT_EN,
584         ISCSI_PARAM_BIDI_CHAP_EN,
585         ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL,
586 
587         ISCSI_PARAM_DEF_TIME2WAIT,
588         ISCSI_PARAM_DEF_TIME2RETAIN,
589         ISCSI_PARAM_MAX_SEGMENT_SIZE,
590         ISCSI_PARAM_STATSN,
591         ISCSI_PARAM_KEEPALIVE_TMO,
592         ISCSI_PARAM_LOCAL_PORT,
593         ISCSI_PARAM_TSID,
594         ISCSI_PARAM_DEF_TASKMGMT_TMO,
595 
596         ISCSI_PARAM_TCP_TIMESTAMP_STAT,
597         ISCSI_PARAM_TCP_WSF_DISABLE,
598         ISCSI_PARAM_TCP_NAGLE_DISABLE,
599         ISCSI_PARAM_TCP_TIMER_SCALE,
600         ISCSI_PARAM_TCP_TIMESTAMP_EN,
601         ISCSI_PARAM_TCP_XMIT_WSF,
602         ISCSI_PARAM_TCP_RECV_WSF,
603         ISCSI_PARAM_IP_FRAGMENT_DISABLE,
604         ISCSI_PARAM_IPV4_TOS,
605         ISCSI_PARAM_IPV6_TC,
606         ISCSI_PARAM_IPV6_FLOW_LABEL,
607         ISCSI_PARAM_IS_FW_ASSIGNED_IPV6,
608 
609         ISCSI_PARAM_DISCOVERY_PARENT_IDX,
610         ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
611         ISCSI_PARAM_LOCAL_IPADDR,
612         /* must always be last */
613         ISCSI_PARAM_MAX,
614 };
615 
616 /* iSCSI HBA params */
617 enum iscsi_host_param {
618         ISCSI_HOST_PARAM_HWADDRESS,
619         ISCSI_HOST_PARAM_INITIATOR_NAME,
620         ISCSI_HOST_PARAM_NETDEV_NAME,
621         ISCSI_HOST_PARAM_IPADDRESS,
622         ISCSI_HOST_PARAM_PORT_STATE,
623         ISCSI_HOST_PARAM_PORT_SPEED,
624         ISCSI_HOST_PARAM_MAX,
625 };
626 
627 /* portal type */
628 #define PORTAL_TYPE_IPV4        "ipv4"
629 #define PORTAL_TYPE_IPV6        "ipv6"
630 
631 /* iSCSI Flash Target params */
632 enum iscsi_flashnode_param {
633         ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6,
634         ISCSI_FLASHNODE_PORTAL_TYPE,
635         ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE,
636         ISCSI_FLASHNODE_DISCOVERY_SESS,
637         ISCSI_FLASHNODE_ENTRY_EN,
638         ISCSI_FLASHNODE_HDR_DGST_EN,
639         ISCSI_FLASHNODE_DATA_DGST_EN,
640         ISCSI_FLASHNODE_IMM_DATA_EN,
641         ISCSI_FLASHNODE_INITIAL_R2T_EN,
642         ISCSI_FLASHNODE_DATASEQ_INORDER,
643         ISCSI_FLASHNODE_PDU_INORDER,
644         ISCSI_FLASHNODE_CHAP_AUTH_EN,
645         ISCSI_FLASHNODE_SNACK_REQ_EN,
646         ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN,
647         ISCSI_FLASHNODE_BIDI_CHAP_EN,
648         /* make authentication for discovery sessions optional */
649         ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL,
650         ISCSI_FLASHNODE_ERL,
651         ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT,
652         ISCSI_FLASHNODE_TCP_NAGLE_DISABLE,
653         ISCSI_FLASHNODE_TCP_WSF_DISABLE,
654         ISCSI_FLASHNODE_TCP_TIMER_SCALE,
655         ISCSI_FLASHNODE_TCP_TIMESTAMP_EN,
656         ISCSI_FLASHNODE_IP_FRAG_DISABLE,
657         ISCSI_FLASHNODE_MAX_RECV_DLENGTH,
658         ISCSI_FLASHNODE_MAX_XMIT_DLENGTH,
659         ISCSI_FLASHNODE_FIRST_BURST,
660         ISCSI_FLASHNODE_DEF_TIME2WAIT,
661         ISCSI_FLASHNODE_DEF_TIME2RETAIN,
662         ISCSI_FLASHNODE_MAX_R2T,
663         ISCSI_FLASHNODE_KEEPALIVE_TMO,
664         ISCSI_FLASHNODE_ISID,
665         ISCSI_FLASHNODE_TSID,
666         ISCSI_FLASHNODE_PORT,
667         ISCSI_FLASHNODE_MAX_BURST,
668         ISCSI_FLASHNODE_DEF_TASKMGMT_TMO,
669         ISCSI_FLASHNODE_IPADDR,
670         ISCSI_FLASHNODE_ALIAS,
671         ISCSI_FLASHNODE_REDIRECT_IPADDR,
672         ISCSI_FLASHNODE_MAX_SEGMENT_SIZE,
673         ISCSI_FLASHNODE_LOCAL_PORT,
674         ISCSI_FLASHNODE_IPV4_TOS,
675         ISCSI_FLASHNODE_IPV6_TC,
676         ISCSI_FLASHNODE_IPV6_FLOW_LABEL,
677         ISCSI_FLASHNODE_NAME,
678         ISCSI_FLASHNODE_TPGT,
679         ISCSI_FLASHNODE_LINK_LOCAL_IPV6,
680         ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX,
681         ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE,
682         ISCSI_FLASHNODE_TCP_XMIT_WSF,
683         ISCSI_FLASHNODE_TCP_RECV_WSF,
684         ISCSI_FLASHNODE_CHAP_IN_IDX,
685         ISCSI_FLASHNODE_CHAP_OUT_IDX,
686         ISCSI_FLASHNODE_USERNAME,
687         ISCSI_FLASHNODE_USERNAME_IN,
688         ISCSI_FLASHNODE_PASSWORD,
689         ISCSI_FLASHNODE_PASSWORD_IN,
690         ISCSI_FLASHNODE_STATSN,
691         ISCSI_FLASHNODE_EXP_STATSN,
692         ISCSI_FLASHNODE_IS_BOOT_TGT,
693 
694         ISCSI_FLASHNODE_MAX,
695 };
696 
697 struct iscsi_flashnode_param_info {
698         uint32_t len;           /* Actual length of the param */
699         uint16_t param;         /* iscsi param value */
700         uint8_t value[0];       /* length sized value follows */
701 } __packed;
702 
703 enum iscsi_discovery_parent_type {
704         ISCSI_DISC_PARENT_UNKNOWN       = 0x1,
705         ISCSI_DISC_PARENT_SENDTGT       = 0x2,
706         ISCSI_DISC_PARENT_ISNS          = 0x3,
707 };
708 
709 /* iSCSI port Speed */
710 enum iscsi_port_speed {
711         ISCSI_PORT_SPEED_UNKNOWN        = 0x1,
712         ISCSI_PORT_SPEED_10MBPS         = 0x2,
713         ISCSI_PORT_SPEED_100MBPS        = 0x4,
714         ISCSI_PORT_SPEED_1GBPS          = 0x8,
715         ISCSI_PORT_SPEED_10GBPS         = 0x10,
716         ISCSI_PORT_SPEED_25GBPS         = 0x20,
717         ISCSI_PORT_SPEED_40GBPS         = 0x40,
718 };
719 
720 /* iSCSI port state */
721 enum iscsi_port_state {
722         ISCSI_PORT_STATE_DOWN           = 0x1,
723         ISCSI_PORT_STATE_UP             = 0x2,
724 };
725 
726 /* iSCSI PING status/error code */
727 enum iscsi_ping_status_code {
728         ISCSI_PING_SUCCESS                      = 0,
729         ISCSI_PING_FW_DISABLED                  = 0x1,
730         ISCSI_PING_IPADDR_INVALID               = 0x2,
731         ISCSI_PING_LINKLOCAL_IPV6_ADDR_INVALID  = 0x3,
732         ISCSI_PING_TIMEOUT                      = 0x4,
733         ISCSI_PING_INVALID_DEST_ADDR            = 0x5,
734         ISCSI_PING_OVERSIZE_PACKET              = 0x6,
735         ISCSI_PING_ICMP_ERROR                   = 0x7,
736         ISCSI_PING_MAX_REQ_EXCEEDED             = 0x8,
737         ISCSI_PING_NO_ARP_RECEIVED              = 0x9,
738 };
739 
740 #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
741 #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
742 
743 /*
744  * These flags presents iSCSI Data-Path capabilities.
745  */
746 #define CAP_RECOVERY_L0         0x1
747 #define CAP_RECOVERY_L1         0x2
748 #define CAP_RECOVERY_L2         0x4
749 #define CAP_MULTI_R2T           0x8
750 #define CAP_HDRDGST             0x10
751 #define CAP_DATADGST            0x20
752 #define CAP_MULTI_CONN          0x40
753 #define CAP_TEXT_NEGO           0x80
754 #define CAP_MARKERS             0x100
755 #define CAP_FW_DB               0x200
756 #define CAP_SENDTARGETS_OFFLOAD 0x400   /* offload discovery process */
757 #define CAP_DATA_PATH_OFFLOAD   0x800   /* offload entire IO path */
758 #define CAP_DIGEST_OFFLOAD      0x1000  /* offload hdr and data digests */
759 #define CAP_PADDING_OFFLOAD     0x2000  /* offload padding insertion, removal,
760                                          and verification */
761 #define CAP_LOGIN_OFFLOAD       0x4000  /* offload session login */
762 
763 /*
764  * These flags describes reason of stop_conn() call
765  */
766 #define STOP_CONN_TERM          0x1
767 #define STOP_CONN_SUSPEND       0x2
768 #define STOP_CONN_RECOVER       0x3
769 
770 #define ISCSI_STATS_CUSTOM_MAX          32
771 #define ISCSI_STATS_CUSTOM_DESC_MAX     64
772 struct iscsi_stats_custom {
773         char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
774         uint64_t value;
775 };
776 
777 /*
778  * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
779  *
780  * Note: this structure contains counters collected on per-connection basis.
781  */
782 struct iscsi_stats {
783         /* octets */
784         uint64_t txdata_octets;
785         uint64_t rxdata_octets;
786 
787         /* xmit pdus */
788         uint32_t noptx_pdus;
789         uint32_t scsicmd_pdus;
790         uint32_t tmfcmd_pdus;
791         uint32_t login_pdus;
792         uint32_t text_pdus;
793         uint32_t dataout_pdus;
794         uint32_t logout_pdus;
795         uint32_t snack_pdus;
796 
797         /* recv pdus */
798         uint32_t noprx_pdus;
799         uint32_t scsirsp_pdus;
800         uint32_t tmfrsp_pdus;
801         uint32_t textrsp_pdus;
802         uint32_t datain_pdus;
803         uint32_t logoutrsp_pdus;
804         uint32_t r2t_pdus;
805         uint32_t async_pdus;
806         uint32_t rjt_pdus;
807 
808         /* errors */
809         uint32_t digest_err;
810         uint32_t timeout_err;
811 
812         /*
813          * iSCSI Custom Statistics support, i.e. Transport could
814          * extend existing MIB statistics with its own specific statistics
815          * up to ISCSI_STATS_CUSTOM_MAX
816          */
817         uint32_t custom_length;
818         struct iscsi_stats_custom custom[0]
819                 __attribute__ ((aligned (sizeof(uint64_t))));
820 };
821 
822 enum chap_type_e {
823         CHAP_TYPE_OUT,
824         CHAP_TYPE_IN,
825 };
826 
827 enum iscsi_chap_param {
828         ISCSI_CHAP_PARAM_INDEX,
829         ISCSI_CHAP_PARAM_CHAP_TYPE,
830         ISCSI_CHAP_PARAM_USERNAME,
831         ISCSI_CHAP_PARAM_PASSWORD,
832         ISCSI_CHAP_PARAM_PASSWORD_LEN
833 };
834 
835 #define ISCSI_CHAP_AUTH_NAME_MAX_LEN    256
836 #define ISCSI_CHAP_AUTH_SECRET_MAX_LEN  256
837 struct iscsi_chap_rec {
838         uint16_t chap_tbl_idx;
839         enum chap_type_e chap_type;
840         char username[ISCSI_CHAP_AUTH_NAME_MAX_LEN];
841         uint8_t password[ISCSI_CHAP_AUTH_SECRET_MAX_LEN];
842         uint8_t password_length;
843 };
844 
845 #define ISCSI_HOST_STATS_CUSTOM_MAX             32
846 #define ISCSI_HOST_STATS_CUSTOM_DESC_MAX        64
847 struct iscsi_host_stats_custom {
848         char desc[ISCSI_HOST_STATS_CUSTOM_DESC_MAX];
849         uint64_t value;
850 };
851 
852 /* struct iscsi_offload_host_stats: Host statistics,
853  * Include statistics for MAC, IP, TCP & iSCSI.
854  */
855 struct iscsi_offload_host_stats {
856         /* MAC */
857         uint64_t mactx_frames;
858         uint64_t mactx_bytes;
859         uint64_t mactx_multicast_frames;
860         uint64_t mactx_broadcast_frames;
861         uint64_t mactx_pause_frames;
862         uint64_t mactx_control_frames;
863         uint64_t mactx_deferral;
864         uint64_t mactx_excess_deferral;
865         uint64_t mactx_late_collision;
866         uint64_t mactx_abort;
867         uint64_t mactx_single_collision;
868         uint64_t mactx_multiple_collision;
869         uint64_t mactx_collision;
870         uint64_t mactx_frames_dropped;
871         uint64_t mactx_jumbo_frames;
872         uint64_t macrx_frames;
873         uint64_t macrx_bytes;
874         uint64_t macrx_unknown_control_frames;
875         uint64_t macrx_pause_frames;
876         uint64_t macrx_control_frames;
877         uint64_t macrx_dribble;
878         uint64_t macrx_frame_length_error;
879         uint64_t macrx_jabber;
880         uint64_t macrx_carrier_sense_error;
881         uint64_t macrx_frame_discarded;
882         uint64_t macrx_frames_dropped;
883         uint64_t mac_crc_error;
884         uint64_t mac_encoding_error;
885         uint64_t macrx_length_error_large;
886         uint64_t macrx_length_error_small;
887         uint64_t macrx_multicast_frames;
888         uint64_t macrx_broadcast_frames;
889         /* IP */
890         uint64_t iptx_packets;
891         uint64_t iptx_bytes;
892         uint64_t iptx_fragments;
893         uint64_t iprx_packets;
894         uint64_t iprx_bytes;
895         uint64_t iprx_fragments;
896         uint64_t ip_datagram_reassembly;
897         uint64_t ip_invalid_address_error;
898         uint64_t ip_error_packets;
899         uint64_t ip_fragrx_overlap;
900         uint64_t ip_fragrx_outoforder;
901         uint64_t ip_datagram_reassembly_timeout;
902         uint64_t ipv6tx_packets;
903         uint64_t ipv6tx_bytes;
904         uint64_t ipv6tx_fragments;
905         uint64_t ipv6rx_packets;
906         uint64_t ipv6rx_bytes;
907         uint64_t ipv6rx_fragments;
908         uint64_t ipv6_datagram_reassembly;
909         uint64_t ipv6_invalid_address_error;
910         uint64_t ipv6_error_packets;
911         uint64_t ipv6_fragrx_overlap;
912         uint64_t ipv6_fragrx_outoforder;
913         uint64_t ipv6_datagram_reassembly_timeout;
914         /* TCP */
915         uint64_t tcptx_segments;
916         uint64_t tcptx_bytes;
917         uint64_t tcprx_segments;
918         uint64_t tcprx_byte;
919         uint64_t tcp_duplicate_ack_retx;
920         uint64_t tcp_retx_timer_expired;
921         uint64_t tcprx_duplicate_ack;
922         uint64_t tcprx_pure_ackr;
923         uint64_t tcptx_delayed_ack;
924         uint64_t tcptx_pure_ack;
925         uint64_t tcprx_segment_error;
926         uint64_t tcprx_segment_outoforder;
927         uint64_t tcprx_window_probe;
928         uint64_t tcprx_window_update;
929         uint64_t tcptx_window_probe_persist;
930         /* ECC */
931         uint64_t ecc_error_correction;
932         /* iSCSI */
933         uint64_t iscsi_pdu_tx;
934         uint64_t iscsi_data_bytes_tx;
935         uint64_t iscsi_pdu_rx;
936         uint64_t iscsi_data_bytes_rx;
937         uint64_t iscsi_io_completed;
938         uint64_t iscsi_unexpected_io_rx;
939         uint64_t iscsi_format_error;
940         uint64_t iscsi_hdr_digest_error;
941         uint64_t iscsi_data_digest_error;
942         uint64_t iscsi_sequence_error;
943         /*
944          * iSCSI Custom Host Statistics support, i.e. Transport could
945          * extend existing host statistics with its own specific statistics
946          * up to ISCSI_HOST_STATS_CUSTOM_MAX
947          */
948         uint32_t custom_length;
949         struct iscsi_host_stats_custom custom[0]
950                 __aligned(sizeof(uint64_t));
951 };
952 
953 #endif
954 

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