1: /*
2: * Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: *
14: * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17: * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
18: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24: * SUCH DAMAGE.
25: *
26: */
27:
28: #ifndef ISTGT_PROTO_H
29: #define ISTGT_PROTO_H
30:
31: #ifdef HAVE_CONFIG_H
32: #include "config.h"
33: #endif
34:
35: #ifdef USE_ATOMIC
36: #ifdef HAVE_SYS_TYPES_H
37: #include <sys/types.h>
38: #endif
39: #ifdef HAVE_MACHINE_ATOMIC_H
40: #include <machine/atomic.h>
41: #endif
42: #ifdef HAVE_SYS_ATOMIC_H
43: #include <sys/atomic.h>
44: #endif
45: #endif /* USE_ATOMIC */
46:
47: #include <stdint.h>
48: #include <signal.h>
49: #include <sys/socket.h>
50: #ifdef HAVE_UUID_H
51: #include <uuid.h>
52: #endif
53: #include "istgt.h"
54: #include "istgt_iscsi.h"
55: #include "istgt_lu.h"
56:
57: #if !defined(__GNUC__)
58: #undef __attribute__
59: #define __attribute__(x)
60: #endif
61: #if defined(__GNUC__) && defined(__GNUC_MINOR__)
62: #define ISTGT_GNUC_PREREQ(ma,mi) \
63: (__GNUC__ > (ma) || (__GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)))
64: #else
65: #define ISTGT_GNUC_PREREQ(ma,mi) 0
66: #endif
67:
68: /* istgt_iscsi.c */
69: int istgt_chap_get_authinfo(ISTGT_CHAP_AUTH *auth, const char *authfile, const char *authuser, int ag_tag);
70: int istgt_iscsi_transfer_out(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd, uint8_t *data, size_t alloc_len, size_t transfer_len);
71: int istgt_create_sess(ISTGT_Ptr istgt, CONN_Ptr conn, ISTGT_LU_Ptr lu);
72: int istgt_create_conn(ISTGT_Ptr istgt, PORTAL_Ptr portal, int sock, struct sockaddr *sa, socklen_t salen);
73: void istgt_lock_gconns(void);
74: void istgt_unlock_gconns(void);
75: int istgt_get_gnconns(void);
76: CONN_Ptr istgt_get_gconn(int idx);
77: int istgt_get_active_conns(void);
78: int istgt_stop_conns(void);
79: CONN_Ptr istgt_find_conn(const char *initiator_port, const char *target_name, uint16_t tsih);
80: int istgt_iscsi_init(ISTGT_Ptr istgt);
81: int istgt_iscsi_shutdown(ISTGT_Ptr istgt);
82: int istgt_iscsi_copy_pdu(ISCSI_PDU_Ptr dst_pdu, ISCSI_PDU_Ptr src_pdu);
83:
84: /* istgt_lu.c */
85: int istgt_lu_allow_netmask(const char *netmask, const char *addr);
86: int istgt_lu_access(CONN_Ptr conn, ISTGT_LU_Ptr lu, const char *iqn, const char *addr);
87: int istgt_lu_visible(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu, const char *iqn, int pg_tag);
88: int istgt_lu_sendtargets(CONN_Ptr conn, const char *iiqn, const char *iaddr, const char *tiqn, uint8_t *data, int alloc_len, int data_len);
89: ISTGT_LU_Ptr istgt_lu_find_target(ISTGT_Ptr istgt, const char *target_name);
90: uint16_t istgt_lu_allocate_tsih(ISTGT_LU_Ptr lu, const char *initiator_port, int tag);
91: void istgt_lu_free_tsih(ISTGT_LU_Ptr lu, uint16_t tsih, char *initiator_port);
92: char *istgt_lu_get_media_flags_string(int flags, char *buf, size_t len);
93: uint64_t istgt_lu_get_devsize(const char *file);
94: uint64_t istgt_lu_get_filesize(const char *file);
95: uint64_t istgt_lu_parse_size(const char *size);
96: int istgt_lu_parse_media_flags(const char *flags);
97: uint64_t istgt_lu_parse_media_size(const char *file, const char *size, int *flags);
98: PORTAL_GROUP *istgt_lu_find_portalgroup(ISTGT_Ptr istgt, int tag);
99: INITIATOR_GROUP *istgt_lu_find_initiatorgroup(ISTGT_Ptr istgt, int tag);
100: int istgt_lu_init(ISTGT_Ptr istgt);
101: int istgt_lu_reload_delete(ISTGT_Ptr istgt);
102: int istgt_lu_reload_update(ISTGT_Ptr istgt);
103: int istgt_lu_set_all_state(ISTGT_Ptr istgt, ISTGT_STATE state);
104: int istgt_lu_create_threads(ISTGT_Ptr istgt);
105: int istgt_lu_shutdown(ISTGT_Ptr istgt);
106: int istgt_lu_islun2lun(uint64_t islun);
107: uint64_t istgt_lu_lun2islun(int lun, int maxlun);
108: int istgt_lu_reset(ISTGT_LU_Ptr lu, uint64_t lun);
109: int istgt_lu_execute(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
110: int istgt_lu_create_task(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd, ISTGT_LU_TASK_Ptr lu_task, int lun);
111: int istgt_lu_destroy_task(ISTGT_LU_TASK_Ptr lu_task);
112: int istgt_lu_clear_task_IT(CONN_Ptr conn, ISTGT_LU_Ptr lu);
113: int istgt_lu_clear_task_ITL(CONN_Ptr conn, ISTGT_LU_Ptr lu, uint64_t lun);
114: int istgt_lu_clear_task_ITLQ(CONN_Ptr conn, ISTGT_LU_Ptr lu, uint64_t lun, uint32_t CmdSN);
115: int istgt_lu_clear_all_task(ISTGT_LU_Ptr lu, uint64_t lun);
116:
117: /* istgt_lu_ctl.c */
118: int istgt_create_uctl(ISTGT_Ptr istgt, PORTAL_Ptr portal, int sock, struct sockaddr *sa, socklen_t salen);
119: int istgt_uctl_init(ISTGT_Ptr istgt);
120: int istgt_uctl_shutdown(ISTGT_Ptr istgt);
121:
122: /* istgt_lu_disk.c */
123: struct istgt_lu_disk_t;
124: void istgt_scsi_dump_cdb(uint8_t *cdb);
125: void istgt_strcpy_pad(uint8_t *dst, size_t size, const char *src, int pad);
126: #ifdef HAVE_UUID_H
127: uint64_t istgt_uuid2uint64(uuid_t *uuid);
128: #endif /* HAVE_UUID_H */
129: uint64_t istgt_get_lui(const char *name, int lun);
130: uint64_t istgt_get_rkey(const char *initiator_name, uint64_t lui);
131: int istgt_lu_set_lid(uint8_t *buf, uint64_t vid);
132: int istgt_lu_set_id(uint8_t *buf, uint64_t vid);
133: int istgt_lu_set_extid(uint8_t *buf, uint64_t vid, uint64_t vide);
134: int istgt_lu_scsi_build_sense_data(uint8_t *data, int sk, int asc, int ascq);
135: int istgt_lu_scsi_build_sense_data2(uint8_t *data, int sk, int asc, int ascq);
136: int istgt_lu_disk_init(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
137: int istgt_lu_disk_shutdown(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
138: int istgt_lu_disk_reset(ISTGT_LU_Ptr lu, int lun);
139: int istgt_lu_disk_execute(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
140: int istgt_lu_disk_queue_clear_IT(CONN_Ptr conn, ISTGT_LU_Ptr lu);
141: int istgt_lu_disk_queue_clear_ITL(CONN_Ptr conn, ISTGT_LU_Ptr lu, int lun);
142: int istgt_lu_disk_queue_clear_ITLQ(CONN_Ptr conn, ISTGT_LU_Ptr lu, int lun, uint32_t CmdSN);
143: int istgt_lu_disk_queue_clear_all(ISTGT_LU_Ptr lu, int lun);
144: int istgt_lu_disk_queue(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
145: int istgt_lu_disk_queue_count(ISTGT_LU_Ptr lu, int *lun);
146: int istgt_lu_disk_queue_start(ISTGT_LU_Ptr lu, int lun);
147: void istgt_lu_disk_aio_done(siginfo_t *info);
148:
149: /* istgt_lu_disk_vbox.c */
150: int istgt_lu_disk_vbox_lun_init(ISTGT_LU_DISK *spec, ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
151: int istgt_lu_disk_vbox_lun_shutdown(ISTGT_LU_DISK *spec, ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
152:
153: /* istgt_lu_dvd.c */
154: struct istgt_lu_dvd_t;
155: int istgt_lu_dvd_media_present(struct istgt_lu_dvd_t *spec);
156: int istgt_lu_dvd_media_lock(struct istgt_lu_dvd_t *spec);
157: int istgt_lu_dvd_load_media(struct istgt_lu_dvd_t *spec);
158: int istgt_lu_dvd_unload_media(struct istgt_lu_dvd_t *spec);
159: int istgt_lu_dvd_change_media(struct istgt_lu_dvd_t *spec, char *type, char *flags, char *file, char *size);
160: int istgt_lu_dvd_init(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
161: int istgt_lu_dvd_shutdown(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
162: int istgt_lu_dvd_reset(ISTGT_LU_Ptr lu, int lun);
163: int istgt_lu_dvd_execute(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
164:
165: /* istgt_lu_tape.c */
166: struct istgt_lu_tape_t;
167: int istgt_lu_tape_media_present(struct istgt_lu_tape_t *spec);
168: int istgt_lu_tape_media_lock(struct istgt_lu_tape_t *spec);
169: int istgt_lu_tape_load_media(struct istgt_lu_tape_t *spec);
170: int istgt_lu_tape_unload_media(struct istgt_lu_tape_t *spec);
171: int istgt_lu_tape_change_media(struct istgt_lu_tape_t *spec, char *type, char *flags, char *file, char *size);
172: int istgt_lu_tape_init(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
173: int istgt_lu_tape_shutdown(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
174: int istgt_lu_tape_reset(ISTGT_LU_Ptr lu, int lun);
175: int istgt_lu_tape_execute(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
176:
177: /* istgt_lu_pass.c */
178: int istgt_lu_pass_init(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
179: int istgt_lu_pass_shutdown(ISTGT_Ptr istgt, ISTGT_LU_Ptr lu);
180: int istgt_lu_pass_reset(ISTGT_LU_Ptr lu, int lun);
181: int istgt_lu_pass_execute(CONN_Ptr conn, ISTGT_LU_CMD_Ptr lu_cmd);
182:
183: #ifdef USE_ATOMIC
184: static inline __attribute__((__always_inline__)) int
185: istgt_lu_get_state(ISTGT_LU_Ptr lu)
186: {
187: ISTGT_STATE state;
188: #if defined HAVE_ATOMIC_LOAD_ACQ_INT
189: state = atomic_load_acq_int((unsigned int *)&lu->state);
190: #elif defined HAVE_ATOMIC_OR_UINT_NV
191: state = (int)atomic_or_uint_nv((unsigned int *)&lu->state, 0);
192: #else
193: #error "no atomic operation"
194: #endif
195: return state;
196: }
197: static inline __attribute__((__always_inline__)) void
198: istgt_lu_set_state(ISTGT_LU_Ptr lu, ISTGT_STATE state)
199: {
200: #if defined HAVE_ATOMIC_STORE_REL_INT
201: atomic_store_rel_int((unsigned int *)&lu->state, state);
202: #elif defined HAVE_ATOMIC_SWAP_UINT
203: (void)atomic_swap_uint((unsigned int *)&lu->state, state);
204: #if defined HAVE_MEMBAR_PRODUCER
205: membar_producer();
206: #endif
207: #else
208: #error "no atomic operation"
209: #endif
210: }
211: #elif defined (USE_GCC_ATOMIC)
212: /* gcc >= 4.1 builtin functions */
213: static inline __attribute__((__always_inline__)) int
214: istgt_lu_get_state(ISTGT_LU_Ptr lu)
215: {
216: ISTGT_STATE state;
217: state = __sync_fetch_and_add((unsigned int *)&lu->state, 0);
218: return state;
219: }
220: static inline __attribute__((__always_inline__)) void
221: istgt_lu_set_state(ISTGT_LU_Ptr lu, ISTGT_STATE state)
222: {
223: ISTGT_STATE state_old;
224: do {
225: state_old = __sync_fetch_and_add((unsigned int *)&lu->state, 0);
226: } while (__sync_val_compare_and_swap((unsigned int *)&lu->state,
227: state_old, state) != state_old);
228: #if defined (HAVE_GCC_ATOMIC_SYNCHRONIZE)
229: __sync_synchronize();
230: #endif
231: }
232: #else /* !USE_ATOMIC && !USE_GCC_ATOMIC */
233: static inline __attribute__((__always_inline__)) int
234: istgt_lu_get_state(ISTGT_LU_Ptr lu)
235: {
236: ISTGT_STATE state;
237: MTX_LOCK(&lu->state_mutex);
238: state = lu->state;
239: MTX_UNLOCK(&lu->state_mutex);
240: return state;
241: }
242:
243: static inline __attribute__((__always_inline__)) void
244: istgt_lu_set_state(ISTGT_LU_Ptr lu, ISTGT_STATE state)
245: {
246: MTX_LOCK(&lu->state_mutex);
247: lu->state = state;
248: MTX_UNLOCK(&lu->state_mutex);
249: }
250: #endif /* USE_ATOMIC */
251:
252: #endif /* ISTGT_PROTO_H */
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