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Alex Aizman39e84792005-08-04 19:31:00 -07001/*
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>
Michael Chan43514772009-06-08 18:14:41 -070025#include <linux/in.h>
26#include <linux/in6.h>
27
28#define ISCSI_NL_GRP_ISCSID 1
29#define ISCSI_NL_GRP_UIP 2
Alex Aizman39e84792005-08-04 19:31:00 -070030
31#define UEVENT_BASE 10
32#define KEVENT_BASE 100
33#define ISCSI_ERR_BASE 1000
34
35enum 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
Or Gerlitz264faaa2006-05-02 19:46:36 -050051 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
Mike Christie01cb2252006-06-28 12:00:22 -050055 ISCSI_UEVENT_TGT_DSCVR = UEVENT_BASE + 15,
Mike Christie1d9bf132007-05-30 12:57:11 -050056 ISCSI_UEVENT_SET_HOST_PARAM = UEVENT_BASE + 16,
Mike Christie26974782007-12-13 12:43:29 -060057 ISCSI_UEVENT_UNBIND_SESSION = UEVENT_BASE + 17,
Mike Christie10eb0f02009-05-13 17:57:38 -050058 ISCSI_UEVENT_CREATE_BOUND_SESSION = UEVENT_BASE + 18,
59 ISCSI_UEVENT_TRANSPORT_EP_CONNECT_THROUGH_HOST = UEVENT_BASE + 19,
Mike Christie01cb2252006-06-28 12:00:22 -050060
Michael Chan43514772009-06-08 18:14:41 -070061 ISCSI_UEVENT_PATH_UPDATE = UEVENT_BASE + 20,
62
Alex Aizman39e84792005-08-04 19:31:00 -070063 /* up events */
64 ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
65 ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
66 ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
Mike Christie53cb8a12006-06-28 12:00:32 -050067 ISCSI_KEVENT_DESTROY_SESSION = KEVENT_BASE + 4,
Mike Christie26974782007-12-13 12:43:29 -060068 ISCSI_KEVENT_UNBIND_SESSION = KEVENT_BASE + 5,
69 ISCSI_KEVENT_CREATE_SESSION = KEVENT_BASE + 6,
Michael Chan43514772009-06-08 18:14:41 -070070
71 ISCSI_KEVENT_PATH_REQ = KEVENT_BASE + 7,
72 ISCSI_KEVENT_IF_DOWN = KEVENT_BASE + 8,
Alex Aizman39e84792005-08-04 19:31:00 -070073};
74
Mike Christie01cb2252006-06-28 12:00:22 -050075enum iscsi_tgt_dscvr {
76 ISCSI_TGT_DSCVR_SEND_TARGETS = 1,
77 ISCSI_TGT_DSCVR_ISNS = 2,
78 ISCSI_TGT_DSCVR_SLP = 3,
79};
80
Alex Aizman39e84792005-08-04 19:31:00 -070081struct iscsi_uevent {
82 uint32_t type; /* k/u events type */
83 uint32_t iferror; /* carries interface or resource errors */
84 uint64_t transport_handle;
85
86 union {
87 /* messages u -> k */
88 struct msg_create_session {
89 uint32_t initial_cmdsn;
Mike Christie15482712007-05-30 12:57:19 -050090 uint16_t cmds_max;
91 uint16_t queue_depth;
Alex Aizman39e84792005-08-04 19:31:00 -070092 } c_session;
Mike Christie40753ca2008-05-21 15:53:56 -050093 struct msg_create_bound_session {
Mike Christied82ff9be2008-05-21 15:54:13 -050094 uint64_t ep_handle;
Mike Christie40753ca2008-05-21 15:53:56 -050095 uint32_t initial_cmdsn;
96 uint16_t cmds_max;
97 uint16_t queue_depth;
98 } c_bound_session;
Alex Aizman39e84792005-08-04 19:31:00 -070099 struct msg_destroy_session {
Alex Aizman39e84792005-08-04 19:31:00 -0700100 uint32_t sid;
101 } d_session;
102 struct msg_create_conn {
Alex Aizman39e84792005-08-04 19:31:00 -0700103 uint32_t sid;
Mike Christieb5c7a122006-04-06 21:13:33 -0500104 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700105 } c_conn;
106 struct msg_bind_conn {
Mike Christieb5c7a122006-04-06 21:13:33 -0500107 uint32_t sid;
108 uint32_t cid;
Or Gerlitz264faaa2006-05-02 19:46:36 -0500109 uint64_t transport_eph;
Alex Aizman39e84792005-08-04 19:31:00 -0700110 uint32_t is_leading;
111 } b_conn;
112 struct msg_destroy_conn {
Mike Christieb5c7a122006-04-06 21:13:33 -0500113 uint32_t sid;
Alex Aizman39e84792005-08-04 19:31:00 -0700114 uint32_t cid;
115 } d_conn;
116 struct msg_send_pdu {
Mike Christieb5c7a122006-04-06 21:13:33 -0500117 uint32_t sid;
118 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700119 uint32_t hdr_size;
120 uint32_t data_size;
Alex Aizman39e84792005-08-04 19:31:00 -0700121 } send_pdu;
122 struct msg_set_param {
Mike Christieb5c7a122006-04-06 21:13:33 -0500123 uint32_t sid;
124 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700125 uint32_t param; /* enum iscsi_param */
Mike Christiefd7255f2006-04-06 21:13:36 -0500126 uint32_t len;
Alex Aizman39e84792005-08-04 19:31:00 -0700127 } set_param;
128 struct msg_start_conn {
Mike Christieb5c7a122006-04-06 21:13:33 -0500129 uint32_t sid;
130 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700131 } start_conn;
132 struct msg_stop_conn {
Mike Christieb5c7a122006-04-06 21:13:33 -0500133 uint32_t sid;
134 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700135 uint64_t conn_handle;
136 uint32_t flag;
137 } stop_conn;
138 struct msg_get_stats {
Mike Christieb5c7a122006-04-06 21:13:33 -0500139 uint32_t sid;
140 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700141 } get_stats;
Or Gerlitz264faaa2006-05-02 19:46:36 -0500142 struct msg_transport_connect {
143 uint32_t non_blocking;
144 } ep_connect;
Mike Christie10eb0f02009-05-13 17:57:38 -0500145 struct msg_transport_connect_through_host {
146 uint32_t host_no;
147 uint32_t non_blocking;
148 } ep_connect_through_host;
Or Gerlitz264faaa2006-05-02 19:46:36 -0500149 struct msg_transport_poll {
150 uint64_t ep_handle;
151 uint32_t timeout_ms;
152 } ep_poll;
153 struct msg_transport_disconnect {
154 uint64_t ep_handle;
155 } ep_disconnect;
Mike Christie01cb2252006-06-28 12:00:22 -0500156 struct msg_tgt_dscvr {
157 enum iscsi_tgt_dscvr type;
158 uint32_t host_no;
159 /*
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.
164 */
165 uint32_t enable;
166 } tgt_dscvr;
Mike Christie1d9bf132007-05-30 12:57:11 -0500167 struct msg_set_host_param {
168 uint32_t host_no;
169 uint32_t param; /* enum iscsi_host_param */
170 uint32_t len;
171 } set_host_param;
Michael Chan43514772009-06-08 18:14:41 -0700172 struct msg_set_path {
173 uint32_t host_no;
174 } set_path;
Alex Aizman39e84792005-08-04 19:31:00 -0700175 } u;
176 union {
177 /* messages k -> u */
Alex Aizman39e84792005-08-04 19:31:00 -0700178 int retcode;
179 struct msg_create_session_ret {
Alex Aizman39e84792005-08-04 19:31:00 -0700180 uint32_t sid;
Mike Christieb5c7a122006-04-06 21:13:33 -0500181 uint32_t host_no;
Alex Aizman39e84792005-08-04 19:31:00 -0700182 } c_session_ret;
Mike Christieb5c7a122006-04-06 21:13:33 -0500183 struct msg_create_conn_ret {
184 uint32_t sid;
185 uint32_t cid;
186 } c_conn_ret;
Mike Christie26974782007-12-13 12:43:29 -0600187 struct msg_unbind_session {
188 uint32_t sid;
189 uint32_t host_no;
190 } unbind_session;
Alex Aizman39e84792005-08-04 19:31:00 -0700191 struct msg_recv_req {
Mike Christieb5c7a122006-04-06 21:13:33 -0500192 uint32_t sid;
193 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700194 uint64_t recv_handle;
Alex Aizman39e84792005-08-04 19:31:00 -0700195 } recv_req;
196 struct msg_conn_error {
Mike Christieb5c7a122006-04-06 21:13:33 -0500197 uint32_t sid;
198 uint32_t cid;
Alex Aizman39e84792005-08-04 19:31:00 -0700199 uint32_t error; /* enum iscsi_err */
200 } connerror;
Mike Christie53cb8a12006-06-28 12:00:32 -0500201 struct msg_session_destroyed {
202 uint32_t host_no;
203 uint32_t sid;
204 } d_session;
Or Gerlitz264faaa2006-05-02 19:46:36 -0500205 struct msg_transport_connect_ret {
206 uint64_t handle;
207 } ep_connect_ret;
Michael Chan43514772009-06-08 18:14:41 -0700208 struct msg_req_path {
209 uint32_t host_no;
210 } req_path;
211 struct msg_notify_if_down {
212 uint32_t host_no;
213 } notify_if_down;
Alex Aizman39e84792005-08-04 19:31:00 -0700214 } r;
215} __attribute__ ((aligned (sizeof(uint64_t))));
216
217/*
Michael Chan43514772009-06-08 18:14:41 -0700218 * 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.
222 */
223struct iscsi_path {
224 uint64_t handle;
225 uint8_t mac_addr[6];
226 uint8_t mac_addr_old[6];
227 uint32_t ip_addr_len; /* 4 or 16 */
228 union {
229 struct in_addr v4_addr;
230 struct in6_addr v6_addr;
231 } src;
232 union {
233 struct in_addr v4_addr;
234 struct in6_addr v6_addr;
235 } dst;
236 uint16_t vlan_id;
237 uint16_t pmtu;
238} __attribute__ ((aligned (sizeof(uint64_t))));
239
240/*
Alex Aizman39e84792005-08-04 19:31:00 -0700241 * Common error codes
242 */
243enum iscsi_err {
244 ISCSI_OK = 0,
245
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,
Mike Christie7996a772006-04-06 21:13:41 -0500261 ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16,
262 ISCSI_ERR_NO_SCSI_CMD = ISCSI_ERR_BASE + 17,
Mike Christiee5bd7b52008-09-24 11:46:10 -0500263 ISCSI_ERR_INVALID_HOST = ISCSI_ERR_BASE + 18,
Mike Christie6f481e32008-09-24 11:46:13 -0500264 ISCSI_ERR_XMIT_FAILED = ISCSI_ERR_BASE + 19,
Mike Christied1af8a32009-08-20 15:11:02 -0500265 ISCSI_ERR_TCP_CONN_CLOSE = ISCSI_ERR_BASE + 20,
Alex Aizman39e84792005-08-04 19:31:00 -0700266};
267
268/*
269 * iSCSI Parameters (RFC3720)
270 */
271enum iscsi_param {
Mike Christiefd7255f2006-04-06 21:13:36 -0500272 /* passed in using netlink set param */
273 ISCSI_PARAM_MAX_RECV_DLENGTH,
274 ISCSI_PARAM_MAX_XMIT_DLENGTH,
275 ISCSI_PARAM_HDRDGST_EN,
276 ISCSI_PARAM_DATADGST_EN,
277 ISCSI_PARAM_INITIAL_R2T_EN,
278 ISCSI_PARAM_MAX_R2T,
279 ISCSI_PARAM_IMM_DATA_EN,
280 ISCSI_PARAM_FIRST_BURST,
281 ISCSI_PARAM_MAX_BURST,
282 ISCSI_PARAM_PDU_INORDER_EN,
283 ISCSI_PARAM_DATASEQ_INORDER_EN,
284 ISCSI_PARAM_ERL,
285 ISCSI_PARAM_IFMARKER_EN,
286 ISCSI_PARAM_OFMARKER_EN,
Mike Christie8d2860b2006-05-02 19:46:47 -0500287 ISCSI_PARAM_EXP_STATSN,
Mike Christiefd7255f2006-04-06 21:13:36 -0500288 ISCSI_PARAM_TARGET_NAME,
289 ISCSI_PARAM_TPGT,
290 ISCSI_PARAM_PERSISTENT_ADDRESS,
291 ISCSI_PARAM_PERSISTENT_PORT,
Mike Christie30a6c652006-04-06 21:13:39 -0500292 ISCSI_PARAM_SESS_RECOVERY_TMO,
Mike Christiefd7255f2006-04-06 21:13:36 -0500293
294 /* pased in through bind conn using transport_fd */
295 ISCSI_PARAM_CONN_PORT,
296 ISCSI_PARAM_CONN_ADDRESS,
297
Mike Christieb2c64162007-05-30 12:57:16 -0500298 ISCSI_PARAM_USERNAME,
299 ISCSI_PARAM_USERNAME_IN,
300 ISCSI_PARAM_PASSWORD,
301 ISCSI_PARAM_PASSWORD_IN,
302
Mike Christie843c0a82007-12-13 12:43:20 -0600303 ISCSI_PARAM_FAST_ABORT,
Mike Christief6d51802007-12-13 12:43:30 -0600304 ISCSI_PARAM_ABORT_TMO,
305 ISCSI_PARAM_LU_RESET_TMO,
306 ISCSI_PARAM_HOST_RESET_TMO,
307
308 ISCSI_PARAM_PING_TMO,
309 ISCSI_PARAM_RECV_TMO,
Mike Christie88dfd342008-05-21 15:54:16 -0500310
311 ISCSI_PARAM_IFACE_NAME,
312 ISCSI_PARAM_ISID,
313 ISCSI_PARAM_INITIATOR_NAME,
Mike Christiefd7255f2006-04-06 21:13:36 -0500314 /* must always be last */
315 ISCSI_PARAM_MAX,
Alex Aizman39e84792005-08-04 19:31:00 -0700316};
Mike Christiefd7255f2006-04-06 21:13:36 -0500317
Mike Christie88dfd342008-05-21 15:54:16 -0500318#define ISCSI_MAX_RECV_DLENGTH (1ULL << ISCSI_PARAM_MAX_RECV_DLENGTH)
319#define ISCSI_MAX_XMIT_DLENGTH (1ULL << ISCSI_PARAM_MAX_XMIT_DLENGTH)
320#define ISCSI_HDRDGST_EN (1ULL << ISCSI_PARAM_HDRDGST_EN)
321#define ISCSI_DATADGST_EN (1ULL << ISCSI_PARAM_DATADGST_EN)
322#define ISCSI_INITIAL_R2T_EN (1ULL << ISCSI_PARAM_INITIAL_R2T_EN)
323#define ISCSI_MAX_R2T (1ULL << ISCSI_PARAM_MAX_R2T)
324#define ISCSI_IMM_DATA_EN (1ULL << ISCSI_PARAM_IMM_DATA_EN)
325#define ISCSI_FIRST_BURST (1ULL << ISCSI_PARAM_FIRST_BURST)
326#define ISCSI_MAX_BURST (1ULL << ISCSI_PARAM_MAX_BURST)
327#define ISCSI_PDU_INORDER_EN (1ULL << ISCSI_PARAM_PDU_INORDER_EN)
328#define ISCSI_DATASEQ_INORDER_EN (1ULL << ISCSI_PARAM_DATASEQ_INORDER_EN)
329#define ISCSI_ERL (1ULL << ISCSI_PARAM_ERL)
330#define ISCSI_IFMARKER_EN (1ULL << ISCSI_PARAM_IFMARKER_EN)
331#define ISCSI_OFMARKER_EN (1ULL << ISCSI_PARAM_OFMARKER_EN)
332#define ISCSI_EXP_STATSN (1ULL << ISCSI_PARAM_EXP_STATSN)
333#define ISCSI_TARGET_NAME (1ULL << ISCSI_PARAM_TARGET_NAME)
334#define ISCSI_TPGT (1ULL << ISCSI_PARAM_TPGT)
335#define ISCSI_PERSISTENT_ADDRESS (1ULL << ISCSI_PARAM_PERSISTENT_ADDRESS)
336#define ISCSI_PERSISTENT_PORT (1ULL << ISCSI_PARAM_PERSISTENT_PORT)
337#define ISCSI_SESS_RECOVERY_TMO (1ULL << ISCSI_PARAM_SESS_RECOVERY_TMO)
338#define ISCSI_CONN_PORT (1ULL << ISCSI_PARAM_CONN_PORT)
339#define ISCSI_CONN_ADDRESS (1ULL << ISCSI_PARAM_CONN_ADDRESS)
340#define ISCSI_USERNAME (1ULL << ISCSI_PARAM_USERNAME)
341#define ISCSI_USERNAME_IN (1ULL << ISCSI_PARAM_USERNAME_IN)
342#define ISCSI_PASSWORD (1ULL << ISCSI_PARAM_PASSWORD)
343#define ISCSI_PASSWORD_IN (1ULL << ISCSI_PARAM_PASSWORD_IN)
344#define ISCSI_FAST_ABORT (1ULL << ISCSI_PARAM_FAST_ABORT)
345#define ISCSI_ABORT_TMO (1ULL << ISCSI_PARAM_ABORT_TMO)
346#define ISCSI_LU_RESET_TMO (1ULL << ISCSI_PARAM_LU_RESET_TMO)
347#define ISCSI_HOST_RESET_TMO (1ULL << ISCSI_PARAM_HOST_RESET_TMO)
348#define ISCSI_PING_TMO (1ULL << ISCSI_PARAM_PING_TMO)
349#define ISCSI_RECV_TMO (1ULL << ISCSI_PARAM_RECV_TMO)
350#define ISCSI_IFACE_NAME (1ULL << ISCSI_PARAM_IFACE_NAME)
351#define ISCSI_ISID (1ULL << ISCSI_PARAM_ISID)
352#define ISCSI_INITIATOR_NAME (1ULL << ISCSI_PARAM_INITIATOR_NAME)
Alex Aizman39e84792005-08-04 19:31:00 -0700353
Mike Christie1819dc82007-05-30 12:57:08 -0500354/* iSCSI HBA params */
355enum iscsi_host_param {
356 ISCSI_HOST_PARAM_HWADDRESS,
Mike Christie8ad57812007-05-30 12:57:13 -0500357 ISCSI_HOST_PARAM_INITIATOR_NAME,
Mike Christied8196ed2007-05-30 12:57:25 -0500358 ISCSI_HOST_PARAM_NETDEV_NAME,
Mike Christie22236962007-05-30 12:57:24 -0500359 ISCSI_HOST_PARAM_IPADDRESS,
Mike Christie1819dc82007-05-30 12:57:08 -0500360 ISCSI_HOST_PARAM_MAX,
361};
362
Mike Christie88dfd342008-05-21 15:54:16 -0500363#define ISCSI_HOST_HWADDRESS (1ULL << ISCSI_HOST_PARAM_HWADDRESS)
364#define ISCSI_HOST_INITIATOR_NAME (1ULL << ISCSI_HOST_PARAM_INITIATOR_NAME)
365#define ISCSI_HOST_NETDEV_NAME (1ULL << ISCSI_HOST_PARAM_NETDEV_NAME)
366#define ISCSI_HOST_IPADDRESS (1ULL << ISCSI_HOST_PARAM_IPADDRESS)
Mike Christie1819dc82007-05-30 12:57:08 -0500367
Alex Aizman39e84792005-08-04 19:31:00 -0700368#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
369#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
Alex Aizman39e84792005-08-04 19:31:00 -0700370
371/*
372 * These flags presents iSCSI Data-Path capabilities.
373 */
374#define CAP_RECOVERY_L0 0x1
375#define CAP_RECOVERY_L1 0x2
376#define CAP_RECOVERY_L2 0x4
377#define CAP_MULTI_R2T 0x8
378#define CAP_HDRDGST 0x10
379#define CAP_DATADGST 0x20
380#define CAP_MULTI_CONN 0x40
381#define CAP_TEXT_NEGO 0x80
382#define CAP_MARKERS 0x100
Mike Christie0ab823d2007-05-30 12:57:22 -0500383#define CAP_FW_DB 0x200
Mike Christie63c62f12008-12-02 00:32:04 -0600384#define CAP_SENDTARGETS_OFFLOAD 0x400 /* offload discovery process */
385#define CAP_DATA_PATH_OFFLOAD 0x800 /* offload entire IO path */
386#define CAP_DIGEST_OFFLOAD 0x1000 /* offload hdr and data digests */
Mike Christie6df19a72008-12-02 00:32:16 -0600387#define CAP_PADDING_OFFLOAD 0x2000 /* offload padding insertion, removal,
388 and verification */
Alex Aizman39e84792005-08-04 19:31:00 -0700389
390/*
391 * These flags describes reason of stop_conn() call
392 */
393#define STOP_CONN_TERM 0x1
394#define STOP_CONN_SUSPEND 0x2
395#define STOP_CONN_RECOVER 0x3
396
397#define ISCSI_STATS_CUSTOM_MAX 32
398#define ISCSI_STATS_CUSTOM_DESC_MAX 64
399struct iscsi_stats_custom {
400 char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
401 uint64_t value;
402};
403
404/*
405 * struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
406 *
407 * Note: this structure contains counters collected on per-connection basis.
408 */
409struct iscsi_stats {
410 /* octets */
411 uint64_t txdata_octets;
412 uint64_t rxdata_octets;
413
414 /* xmit pdus */
415 uint32_t noptx_pdus;
416 uint32_t scsicmd_pdus;
417 uint32_t tmfcmd_pdus;
418 uint32_t login_pdus;
419 uint32_t text_pdus;
420 uint32_t dataout_pdus;
421 uint32_t logout_pdus;
422 uint32_t snack_pdus;
423
424 /* recv pdus */
425 uint32_t noprx_pdus;
426 uint32_t scsirsp_pdus;
427 uint32_t tmfrsp_pdus;
428 uint32_t textrsp_pdus;
429 uint32_t datain_pdus;
430 uint32_t logoutrsp_pdus;
431 uint32_t r2t_pdus;
432 uint32_t async_pdus;
433 uint32_t rjt_pdus;
434
435 /* errors */
436 uint32_t digest_err;
437 uint32_t timeout_err;
438
439 /*
440 * iSCSI Custom Statistics support, i.e. Transport could
441 * extend existing MIB statistics with its own specific statistics
442 * up to ISCSI_STATS_CUSTOM_MAX
443 */
444 uint32_t custom_length;
445 struct iscsi_stats_custom custom[0]
446 __attribute__ ((aligned (sizeof(uint64_t))));
447};
448
449#endif