2 * iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
4 * Copyright (C) 2005 Dmitry Yusupov
5 * Copyright (C) 2005 Alex Aizman
6 * maintained by open-iscsi@googlegroups.com
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.
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.
18 * See the file COPYING included with this distribution for more details.
24 #include <scsi/iscsi_proto.h>
26 #include <linux/in6.h>
28 #define ISCSI_NL_GRP_ISCSID 1
29 #define ISCSI_NL_GRP_UIP 2
31 #define UEVENT_BASE 10
32 #define KEVENT_BASE 100
33 #define ISCSI_ERR_BASE 1000
36 ISCSI_UEVENT_UNKNOWN = 0,
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,
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,
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,
61 ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
62 ISCSI_UEVENT_SET_IFACE_PARAMS = UEVENT_BASE + 21,
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,
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,
77 enum iscsi_tgt_dscvr {
78 ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
79 ISCSI_TGT_DSCVR_ISNS = 2,
80 ISCSI_TGT_DSCVR_SLP = 3,
84 uint32_t type; /* k/u events type */
85 uint32_t iferror; /* carries interface or resource errors */
86 uint64_t transport_handle;
90 struct msg_create_session {
91 uint32_t initial_cmdsn;
95 struct msg_create_bound_session {
97 uint32_t initial_cmdsn;
101 struct msg_destroy_session {
104 struct msg_create_conn {
108 struct msg_bind_conn {
111 uint64_t transport_eph;
114 struct msg_destroy_conn {
118 struct msg_send_pdu {
124 struct msg_set_param {
127 uint32_t param; /* enum iscsi_param */
130 struct msg_start_conn {
134 struct msg_stop_conn {
137 uint64_t conn_handle;
140 struct msg_get_stats {
144 struct msg_transport_connect {
145 uint32_t non_blocking;
147 struct msg_transport_connect_through_host {
149 uint32_t non_blocking;
150 } ep_connect_through_host;
151 struct msg_transport_poll {
155 struct msg_transport_disconnect {
158 struct msg_tgt_dscvr {
159 enum iscsi_tgt_dscvr type;
162 * enable = 1 to establish a new connection
163 * with the server. enable = 0 to disconnect
164 * from the server. Used primarily to switch
165 * from one iSNS server to another.
169 struct msg_set_host_param {
171 uint32_t param; /* enum iscsi_host_param */
174 struct msg_set_path {
177 struct msg_set_iface_params {
183 /* messages k -> u */
185 struct msg_create_session_ret {
189 struct msg_create_conn_ret {
193 struct msg_unbind_session {
197 struct msg_recv_req {
200 uint64_t recv_handle;
202 struct msg_conn_login {
205 uint32_t state; /* enum iscsi_conn_state */
207 struct msg_conn_error {
210 uint32_t error; /* enum iscsi_err */
212 struct msg_session_destroyed {
216 struct msg_transport_connect_ret {
219 struct msg_req_path {
222 struct msg_notify_if_down {
226 } __attribute__ ((aligned (sizeof(uint64_t))));
228 enum iscsi_param_type {
229 ISCSI_PARAM, /* iscsi_param (session, conn, target, LU) */
230 ISCSI_HOST_PARAM, /* iscsi_host_param */
231 ISCSI_NET_PARAM, /* iscsi_net_param */
234 struct iscsi_iface_param_info {
235 uint32_t iface_num; /* iface number, 0 - n */
236 uint32_t len; /* Actual length of the param */
237 uint16_t param; /* iscsi param value */
238 uint8_t iface_type; /* IPv4 or IPv6 */
239 uint8_t param_type; /* iscsi_param_type */
240 uint8_t value[0]; /* length sized value follows */
244 * To keep the struct iscsi_uevent size the same for userspace code
245 * compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
246 * ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
247 * struct iscsi_uevent in the NETLINK_ISCSI message.
252 uint8_t mac_addr_old[6];
253 uint32_t ip_addr_len; /* 4 or 16 */
255 struct in_addr v4_addr;
256 struct in6_addr v6_addr;
259 struct in_addr v4_addr;
260 struct in6_addr v6_addr;
264 } __attribute__ ((aligned (sizeof(uint64_t))));
266 /* iscsi iface enabled/disabled setting */
267 #define ISCSI_IFACE_DISABLE 0x01
268 #define ISCSI_IFACE_ENABLE 0x02
271 #define ISCSI_BOOTPROTO_STATIC 0x01
272 #define ISCSI_BOOTPROTO_DHCP 0x02
274 /* ipv6 addr autoconfig type */
275 #define ISCSI_IPV6_AUTOCFG_DISABLE 0x01
276 #define ISCSI_IPV6_AUTOCFG_ND_ENABLE 0x02
277 #define ISCSI_IPV6_AUTOCFG_DHCPV6_ENABLE 0x03
279 /* ipv6 link local addr type */
280 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE 0x01
281 #define ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE 0x02
283 /* ipv6 router addr type */
284 #define ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE 0x01
285 #define ISCSI_IPV6_ROUTER_AUTOCFG_DISABLE 0x02
287 #define ISCSI_IFACE_TYPE_IPV4 0x01
288 #define ISCSI_IFACE_TYPE_IPV6 0x02
290 #define ISCSI_MAX_VLAN_ID 4095
291 #define ISCSI_MAX_VLAN_PRIORITY 7
293 /* iscsi vlan enable/disabled setting */
294 #define ISCSI_VLAN_DISABLE 0x01
295 #define ISCSI_VLAN_ENABLE 0x02
297 /* iSCSI network params */
298 enum iscsi_net_param {
299 ISCSI_NET_PARAM_IPV4_ADDR = 1,
300 ISCSI_NET_PARAM_IPV4_SUBNET = 2,
301 ISCSI_NET_PARAM_IPV4_GW = 3,
302 ISCSI_NET_PARAM_IPV4_BOOTPROTO = 4,
303 ISCSI_NET_PARAM_MAC = 5,
304 ISCSI_NET_PARAM_IPV6_LINKLOCAL = 6,
305 ISCSI_NET_PARAM_IPV6_ADDR = 7,
306 ISCSI_NET_PARAM_IPV6_ROUTER = 8,
307 ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG = 9,
308 ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG = 10,
309 ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG = 11,
310 ISCSI_NET_PARAM_IFACE_ENABLE = 12,
311 ISCSI_NET_PARAM_VLAN_ID = 13,
312 ISCSI_NET_PARAM_VLAN_PRIORITY = 14,
313 ISCSI_NET_PARAM_VLAN_ENABLED = 15,
314 ISCSI_NET_PARAM_VLAN_TAG = 16,
315 ISCSI_NET_PARAM_IFACE_TYPE = 17,
316 ISCSI_NET_PARAM_IFACE_NAME = 18,
317 ISCSI_NET_PARAM_MTU = 19,
318 ISCSI_NET_PARAM_PORT = 20,
321 enum iscsi_conn_state {
322 ISCSI_CONN_STATE_FREE,
323 ISCSI_CONN_STATE_XPT_WAIT,
324 ISCSI_CONN_STATE_IN_LOGIN,
325 ISCSI_CONN_STATE_LOGGED_IN,
326 ISCSI_CONN_STATE_IN_LOGOUT,
327 ISCSI_CONN_STATE_LOGOUT_REQUESTED,
328 ISCSI_CONN_STATE_CLEANUP_WAIT,
337 ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
338 ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
339 ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
340 ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
341 ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
342 ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
343 ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
344 ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
345 ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
346 ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
347 ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
348 ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
349 ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
350 ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
351 ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
352 ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
353 ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
354 ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18,
355 ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19,
356 ISCSI_ERR_TCP_CONN_CLOSE = ISCSI_ERR_BASE + 20,
357 ISCSI_ERR_SCSI_EH_SESSION_RST = ISCSI_ERR_BASE + 21,
361 * iSCSI Parameters (RFC3720)
364 /* passed in using netlink set param */
365 ISCSI_PARAM_MAX_RECV_DLENGTH,
366 ISCSI_PARAM_MAX_XMIT_DLENGTH,
367 ISCSI_PARAM_HDRDGST_EN,
368 ISCSI_PARAM_DATADGST_EN,
369 ISCSI_PARAM_INITIAL_R2T_EN,
371 ISCSI_PARAM_IMM_DATA_EN,
372 ISCSI_PARAM_FIRST_BURST,
373 ISCSI_PARAM_MAX_BURST,
374 ISCSI_PARAM_PDU_INORDER_EN,
375 ISCSI_PARAM_DATASEQ_INORDER_EN,
377 ISCSI_PARAM_IFMARKER_EN,
378 ISCSI_PARAM_OFMARKER_EN,
379 ISCSI_PARAM_EXP_STATSN,
380 ISCSI_PARAM_TARGET_NAME,
382 ISCSI_PARAM_PERSISTENT_ADDRESS,
383 ISCSI_PARAM_PERSISTENT_PORT,
384 ISCSI_PARAM_SESS_RECOVERY_TMO,
386 /* passed in through bind conn using transport_fd */
387 ISCSI_PARAM_CONN_PORT,
388 ISCSI_PARAM_CONN_ADDRESS,
390 ISCSI_PARAM_USERNAME,
391 ISCSI_PARAM_USERNAME_IN,
392 ISCSI_PARAM_PASSWORD,
393 ISCSI_PARAM_PASSWORD_IN,
395 ISCSI_PARAM_FAST_ABORT,
396 ISCSI_PARAM_ABORT_TMO,
397 ISCSI_PARAM_LU_RESET_TMO,
398 ISCSI_PARAM_HOST_RESET_TMO,
400 ISCSI_PARAM_PING_TMO,
401 ISCSI_PARAM_RECV_TMO,
403 ISCSI_PARAM_IFACE_NAME,
405 ISCSI_PARAM_INITIATOR_NAME,
407 ISCSI_PARAM_TGT_RESET_TMO,
408 ISCSI_PARAM_TARGET_ALIAS,
409 /* must always be last */
413 /* iSCSI HBA params */
414 enum iscsi_host_param {
415 ISCSI_HOST_PARAM_HWADDRESS,
416 ISCSI_HOST_PARAM_INITIATOR_NAME,
417 ISCSI_HOST_PARAM_NETDEV_NAME,
418 ISCSI_HOST_PARAM_IPADDRESS,
419 ISCSI_HOST_PARAM_MAX,
422 #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
423 #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
426 * These flags presents iSCSI Data-Path capabilities.
428 #define CAP_RECOVERY_L0 0x1
429 #define CAP_RECOVERY_L1 0x2
430 #define CAP_RECOVERY_L2 0x4
431 #define CAP_MULTI_R2T 0x8
432 #define CAP_HDRDGST 0x10
433 #define CAP_DATADGST 0x20
434 #define CAP_MULTI_CONN 0x40
435 #define CAP_TEXT_NEGO 0x80
436 #define CAP_MARKERS 0x100
437 #define CAP_FW_DB 0x200
438 #define CAP_SENDTARGETS_OFFLOAD 0x400 /* offload discovery process */
439 #define CAP_DATA_PATH_OFFLOAD 0x800 /* offload entire IO path */
440 #define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */
441 #define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal,
443 #define CAP_LOGIN_OFFLOAD 0x4000 /* offload session login */
446 * These flags describes reason of stop_conn() call
448 #define STOP_CONN_TERM 0x1
449 #define STOP_CONN_SUSPEND 0x2
450 #define STOP_CONN_RECOVER 0x3
452 #define ISCSI_STATS_CUSTOM_MAX 32
453 #define ISCSI_STATS_CUSTOM_DESC_MAX 64
454 struct iscsi_stats_custom {
455 char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
460 * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
462 * Note: this structure contains counters collected on per-connection basis.
466 uint64_t txdata_octets;
467 uint64_t rxdata_octets;
471 uint32_t scsicmd_pdus;
472 uint32_t tmfcmd_pdus;
475 uint32_t dataout_pdus;
476 uint32_t logout_pdus;
481 uint32_t scsirsp_pdus;
482 uint32_t tmfrsp_pdus;
483 uint32_t textrsp_pdus;
484 uint32_t datain_pdus;
485 uint32_t logoutrsp_pdus;
492 uint32_t timeout_err;
495 * iSCSI Custom Statistics support, i.e. Transport could
496 * extend existing MIB statistics with its own specific statistics
497 * up to ISCSI_STATS_CUSTOM_MAX
499 uint32_t custom_length;
500 struct iscsi_stats_custom custom[0]
501 __attribute__ ((aligned (sizeof(uint64_t))));