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,
64 ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
65 ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
66 ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
67 ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
68 ISCSI_KEVENT_UNBIND_SESSION = KEVENT_BASE + 5,
69 ISCSI_KEVENT_CREATE_SESSION = KEVENT_BASE + 6,
71 ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7,
72 ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8,
75 enum iscsi_tgt_dscvr {
76 ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
77 ISCSI_TGT_DSCVR_ISNS = 2,
78 ISCSI_TGT_DSCVR_SLP = 3,
82 uint32_t type; /* k/u events type */
83 uint32_t iferror; /* carries interface or resource errors */
84 uint64_t transport_handle;
88 struct msg_create_session {
89 uint32_t initial_cmdsn;
93 struct msg_create_bound_session {
95 uint32_t initial_cmdsn;
99 struct msg_destroy_session {
102 struct msg_create_conn {
106 struct msg_bind_conn {
109 uint64_t transport_eph;
112 struct msg_destroy_conn {
116 struct msg_send_pdu {
122 struct msg_set_param {
125 uint32_t param; /* enum iscsi_param */
128 struct msg_start_conn {
132 struct msg_stop_conn {
135 uint64_t conn_handle;
138 struct msg_get_stats {
142 struct msg_transport_connect {
143 uint32_t non_blocking;
145 struct msg_transport_connect_through_host {
147 uint32_t non_blocking;
148 } ep_connect_through_host;
149 struct msg_transport_poll {
153 struct msg_transport_disconnect {
156 struct msg_tgt_dscvr {
157 enum iscsi_tgt_dscvr type;
160 * enable = 1 to establish a new connection
161 * with the server. enable = 0 to disconnect
162 * from the server. Used primarily to switch
163 * from one iSNS server to another.
167 struct msg_set_host_param {
169 uint32_t param; /* enum iscsi_host_param */
172 struct msg_set_path {
177 /* messages k -> u */
179 struct msg_create_session_ret {
183 struct msg_create_conn_ret {
187 struct msg_unbind_session {
191 struct msg_recv_req {
194 uint64_t recv_handle;
196 struct msg_conn_error {
199 uint32_t error; /* enum iscsi_err */
201 struct msg_session_destroyed {
205 struct msg_transport_connect_ret {
208 struct msg_req_path {
211 struct msg_notify_if_down {
215 } __attribute__ ((aligned (sizeof(uint64_t))));
218 * To keep the struct iscsi_uevent size the same for userspace code
219 * compatibility, the main structure for ISCSI_UEVENT_PATH_UPDATE and
220 * ISCSI_KEVENT_PATH_REQ is defined separately and comes after the
221 * struct iscsi_uevent in the NETLINK_ISCSI message.
226 uint8_t mac_addr_old[6];
227 uint32_t ip_addr_len; /* 4 or 16 */
229 struct in_addr v4_addr;
230 struct in6_addr v6_addr;
233 struct in_addr v4_addr;
234 struct in6_addr v6_addr;
238 } __attribute__ ((aligned (sizeof(uint64_t))));
246 ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
247 ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
248 ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
249 ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
250 ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
251 ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
252 ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
253 ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
254 ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
255 ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
256 ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
257 ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
258 ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
259 ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
260 ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
261 ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
262 ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
263 ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18,
264 ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19,
268 * iSCSI Parameters (RFC3720)
271 /* passed in using netlink set param */
272 ISCSI_PARAM_MAX_RECV_DLENGTH,
273 ISCSI_PARAM_MAX_XMIT_DLENGTH,
274 ISCSI_PARAM_HDRDGST_EN,
275 ISCSI_PARAM_DATADGST_EN,
276 ISCSI_PARAM_INITIAL_R2T_EN,
278 ISCSI_PARAM_IMM_DATA_EN,
279 ISCSI_PARAM_FIRST_BURST,
280 ISCSI_PARAM_MAX_BURST,
281 ISCSI_PARAM_PDU_INORDER_EN,
282 ISCSI_PARAM_DATASEQ_INORDER_EN,
284 ISCSI_PARAM_IFMARKER_EN,
285 ISCSI_PARAM_OFMARKER_EN,
286 ISCSI_PARAM_EXP_STATSN,
287 ISCSI_PARAM_TARGET_NAME,
289 ISCSI_PARAM_PERSISTENT_ADDRESS,
290 ISCSI_PARAM_PERSISTENT_PORT,
291 ISCSI_PARAM_SESS_RECOVERY_TMO,
293 /* pased in through bind conn using transport_fd */
294 ISCSI_PARAM_CONN_PORT,
295 ISCSI_PARAM_CONN_ADDRESS,
297 ISCSI_PARAM_USERNAME,
298 ISCSI_PARAM_USERNAME_IN,
299 ISCSI_PARAM_PASSWORD,
300 ISCSI_PARAM_PASSWORD_IN,
302 ISCSI_PARAM_FAST_ABORT,
303 ISCSI_PARAM_ABORT_TMO,
304 ISCSI_PARAM_LU_RESET_TMO,
305 ISCSI_PARAM_HOST_RESET_TMO,
307 ISCSI_PARAM_PING_TMO,
308 ISCSI_PARAM_RECV_TMO,
310 ISCSI_PARAM_IFACE_NAME,
312 ISCSI_PARAM_INITIATOR_NAME,
313 /* must always be last */
317 #define ISCSI_MAX_RECV_DLENGTH (1ULL << ISCSI_PARAM_MAX_RECV_DLENGTH)
318 #define ISCSI_MAX_XMIT_DLENGTH (1ULL << ISCSI_PARAM_MAX_XMIT_DLENGTH)
319 #define ISCSI_HDRDGST_EN (1ULL << ISCSI_PARAM_HDRDGST_EN)
320 #define ISCSI_DATADGST_EN (1ULL << ISCSI_PARAM_DATADGST_EN)
321 #define ISCSI_INITIAL_R2T_EN (1ULL << ISCSI_PARAM_INITIAL_R2T_EN)
322 #define ISCSI_MAX_R2T (1ULL << ISCSI_PARAM_MAX_R2T)
323 #define ISCSI_IMM_DATA_EN (1ULL << ISCSI_PARAM_IMM_DATA_EN)
324 #define ISCSI_FIRST_BURST (1ULL << ISCSI_PARAM_FIRST_BURST)
325 #define ISCSI_MAX_BURST (1ULL << ISCSI_PARAM_MAX_BURST)
326 #define ISCSI_PDU_INORDER_EN (1ULL << ISCSI_PARAM_PDU_INORDER_EN)
327 #define ISCSI_DATASEQ_INORDER_EN (1ULL << ISCSI_PARAM_DATASEQ_INORDER_EN)
328 #define ISCSI_ERL (1ULL << ISCSI_PARAM_ERL)
329 #define ISCSI_IFMARKER_EN (1ULL << ISCSI_PARAM_IFMARKER_EN)
330 #define ISCSI_OFMARKER_EN (1ULL << ISCSI_PARAM_OFMARKER_EN)
331 #define ISCSI_EXP_STATSN (1ULL << ISCSI_PARAM_EXP_STATSN)
332 #define ISCSI_TARGET_NAME (1ULL << ISCSI_PARAM_TARGET_NAME)
333 #define ISCSI_TPGT (1ULL << ISCSI_PARAM_TPGT)
334 #define ISCSI_PERSISTENT_ADDRESS (1ULL << ISCSI_PARAM_PERSISTENT_ADDRESS)
335 #define ISCSI_PERSISTENT_PORT (1ULL << ISCSI_PARAM_PERSISTENT_PORT)
336 #define ISCSI_SESS_RECOVERY_TMO (1ULL << ISCSI_PARAM_SESS_RECOVERY_TMO)
337 #define ISCSI_CONN_PORT (1ULL << ISCSI_PARAM_CONN_PORT)
338 #define ISCSI_CONN_ADDRESS (1ULL << ISCSI_PARAM_CONN_ADDRESS)
339 #define ISCSI_USERNAME (1ULL << ISCSI_PARAM_USERNAME)
340 #define ISCSI_USERNAME_IN (1ULL << ISCSI_PARAM_USERNAME_IN)
341 #define ISCSI_PASSWORD (1ULL << ISCSI_PARAM_PASSWORD)
342 #define ISCSI_PASSWORD_IN (1ULL << ISCSI_PARAM_PASSWORD_IN)
343 #define ISCSI_FAST_ABORT (1ULL << ISCSI_PARAM_FAST_ABORT)
344 #define ISCSI_ABORT_TMO (1ULL << ISCSI_PARAM_ABORT_TMO)
345 #define ISCSI_LU_RESET_TMO (1ULL << ISCSI_PARAM_LU_RESET_TMO)
346 #define ISCSI_HOST_RESET_TMO (1ULL << ISCSI_PARAM_HOST_RESET_TMO)
347 #define ISCSI_PING_TMO (1ULL << ISCSI_PARAM_PING_TMO)
348 #define ISCSI_RECV_TMO (1ULL << ISCSI_PARAM_RECV_TMO)
349 #define ISCSI_IFACE_NAME (1ULL << ISCSI_PARAM_IFACE_NAME)
350 #define ISCSI_ISID (1ULL << ISCSI_PARAM_ISID)
351 #define ISCSI_INITIATOR_NAME (1ULL << ISCSI_PARAM_INITIATOR_NAME)
353 /* iSCSI HBA params */
354 enum iscsi_host_param {
355 ISCSI_HOST_PARAM_HWADDRESS,
356 ISCSI_HOST_PARAM_INITIATOR_NAME,
357 ISCSI_HOST_PARAM_NETDEV_NAME,
358 ISCSI_HOST_PARAM_IPADDRESS,
359 ISCSI_HOST_PARAM_MAX,
362 #define ISCSI_HOST_HWADDRESS (1ULL << ISCSI_HOST_PARAM_HWADDRESS)
363 #define ISCSI_HOST_INITIATOR_NAME (1ULL << ISCSI_HOST_PARAM_INITIATOR_NAME)
364 #define ISCSI_HOST_NETDEV_NAME (1ULL << ISCSI_HOST_PARAM_NETDEV_NAME)
365 #define ISCSI_HOST_IPADDRESS (1ULL << ISCSI_HOST_PARAM_IPADDRESS)
367 #define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
368 #define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
371 * These flags presents iSCSI Data-Path capabilities.
373 #define CAP_RECOVERY_L0 0x1
374 #define CAP_RECOVERY_L1 0x2
375 #define CAP_RECOVERY_L2 0x4
376 #define CAP_MULTI_R2T 0x8
377 #define CAP_HDRDGST 0x10
378 #define CAP_DATADGST 0x20
379 #define CAP_MULTI_CONN 0x40
380 #define CAP_TEXT_NEGO 0x80
381 #define CAP_MARKERS 0x100
382 #define CAP_FW_DB 0x200
383 #define CAP_SENDTARGETS_OFFLOAD 0x400 /* offload discovery process */
384 #define CAP_DATA_PATH_OFFLOAD 0x800 /* offload entire IO path */
385 #define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */
386 #define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal,
390 * These flags describes reason of stop_conn() call
392 #define STOP_CONN_TERM 0x1
393 #define STOP_CONN_SUSPEND 0x2
394 #define STOP_CONN_RECOVER 0x3
396 #define ISCSI_STATS_CUSTOM_MAX 32
397 #define ISCSI_STATS_CUSTOM_DESC_MAX 64
398 struct iscsi_stats_custom {
399 char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
404 * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
406 * Note: this structure contains counters collected on per-connection basis.
410 uint64_t txdata_octets;
411 uint64_t rxdata_octets;
415 uint32_t scsicmd_pdus;
416 uint32_t tmfcmd_pdus;
419 uint32_t dataout_pdus;
420 uint32_t logout_pdus;
425 uint32_t scsirsp_pdus;
426 uint32_t tmfrsp_pdus;
427 uint32_t textrsp_pdus;
428 uint32_t datain_pdus;
429 uint32_t logoutrsp_pdus;
436 uint32_t timeout_err;
439 * iSCSI Custom Statistics support, i.e. Transport could
440 * extend existing MIB statistics with its own specific statistics
441 * up to ISCSI_STATS_CUSTOM_MAX
443 uint32_t custom_length;
444 struct iscsi_stats_custom custom[0]
445 __attribute__ ((aligned (sizeof(uint64_t))));