2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2012 The FreeBSD Foundation
6 * This software was developed by Edward Tomasz Napierala under sponsorship
7 * from the FreeBSD Foundation.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 #include <sys/queue.h>
37 #ifdef ICL_KERNEL_PROXY
38 #include <sys/types.h>
40 #include <sys/socket.h>
44 #define DEFAULT_CONFIG_PATH "/etc/ctl.conf"
45 #define DEFAULT_PIDFILE "/var/run/ctld.pid"
46 #define DEFAULT_BLOCKSIZE 512
47 #define DEFAULT_CD_BLOCKSIZE 2048
50 #define MAX_NAME_LEN 223
51 #define MAX_DATA_SEGMENT_LENGTH (128 * 1024)
52 #define SOCKBUF_SIZE 1048576
55 TAILQ_ENTRY(auth) a_next;
56 struct auth_group *a_auth_group;
60 char *a_mutual_secret;
64 TAILQ_ENTRY(auth_name) an_next;
65 struct auth_group *an_auth_group;
66 char *an_initiator_name;
70 TAILQ_ENTRY(auth_portal) ap_next;
71 struct auth_group *ap_auth_group;
72 char *ap_initiator_portal;
73 struct sockaddr_storage ap_sa;
77 #define AG_TYPE_UNKNOWN 0
78 #define AG_TYPE_DENY 1
79 #define AG_TYPE_NO_AUTHENTICATION 2
80 #define AG_TYPE_CHAP 3
81 #define AG_TYPE_CHAP_MUTUAL 4
84 TAILQ_ENTRY(auth_group) ag_next;
87 struct target *ag_target;
89 TAILQ_HEAD(, auth) ag_auths;
90 TAILQ_HEAD(, auth_name) ag_names;
91 TAILQ_HEAD(, auth_portal) ag_portals;
95 TAILQ_ENTRY(portal) p_next;
96 struct portal_group *p_portal_group;
99 struct addrinfo *p_ai;
100 #ifdef ICL_KERNEL_PROXY
104 TAILQ_HEAD(, target) p_targets;
108 TAILQ_HEAD(options, option);
110 #define PG_FILTER_UNKNOWN 0
111 #define PG_FILTER_NONE 1
112 #define PG_FILTER_PORTAL 2
113 #define PG_FILTER_PORTAL_NAME 3
114 #define PG_FILTER_PORTAL_NAME_AUTH 4
116 struct portal_group {
117 TAILQ_ENTRY(portal_group) pg_next;
118 struct conf *pg_conf;
119 struct options pg_options;
121 struct auth_group *pg_discovery_auth_group;
122 int pg_discovery_filter;
125 TAILQ_HEAD(, portal) pg_portals;
126 TAILQ_HEAD(, port) pg_ports;
128 char *pg_redirection;
136 TAILQ_ENTRY(pport) pp_next;
137 TAILQ_HEAD(, port) pp_ports;
138 struct conf *pp_conf;
141 uint32_t pp_ctl_port;
145 TAILQ_ENTRY(port) p_next;
146 TAILQ_ENTRY(port) p_pgs;
147 TAILQ_ENTRY(port) p_pps;
148 TAILQ_ENTRY(port) p_ts;
151 struct auth_group *p_auth_group;
152 struct portal_group *p_portal_group;
153 struct pport *p_pport;
154 struct target *p_target;
163 TAILQ_ENTRY(option) o_next;
169 TAILQ_ENTRY(lun) l_next;
171 struct options l_options;
174 uint8_t l_device_type;
186 TAILQ_ENTRY(target) t_next;
188 struct lun *t_luns[MAX_LUNS];
189 struct auth_group *t_auth_group;
190 TAILQ_HEAD(, port) t_ports;
197 TAILQ_ENTRY(isns) i_next;
200 struct addrinfo *i_ai;
204 char *conf_pidfile_path;
205 TAILQ_HEAD(, lun) conf_luns;
206 TAILQ_HEAD(, target) conf_targets;
207 TAILQ_HEAD(, auth_group) conf_auth_groups;
208 TAILQ_HEAD(, port) conf_ports;
209 TAILQ_HEAD(, portal_group) conf_portal_groups;
210 TAILQ_HEAD(, pport) conf_pports;
211 TAILQ_HEAD(, isns) conf_isns;
212 int conf_isns_period;
213 int conf_isns_timeout;
218 #ifdef ICL_KERNEL_PROXY
221 struct pidfh *conf_pidfh;
223 bool conf_default_pg_defined;
224 bool conf_default_ag_defined;
225 bool conf_kernel_port_on;
228 #define CONN_SESSION_TYPE_NONE 0
229 #define CONN_SESSION_TYPE_DISCOVERY 1
230 #define CONN_SESSION_TYPE_NORMAL 2
232 #define CONN_DIGEST_NONE 0
233 #define CONN_DIGEST_CRC32C 1
236 struct portal *conn_portal;
237 struct port *conn_port;
238 struct target *conn_target;
240 int conn_session_type;
241 char *conn_initiator_name;
242 char *conn_initiator_addr;
243 char *conn_initiator_alias;
244 uint8_t conn_initiator_isid[6];
245 struct sockaddr_storage conn_initiator_sa;
247 uint32_t conn_statsn;
248 int conn_max_recv_data_segment_limit;
249 int conn_max_send_data_segment_limit;
250 int conn_max_burst_limit;
251 int conn_first_burst_limit;
252 int conn_max_recv_data_segment_length;
253 int conn_max_send_data_segment_length;
254 int conn_max_burst_length;
255 int conn_first_burst_length;
256 int conn_immediate_data;
257 int conn_header_digest;
258 int conn_data_digest;
259 const char *conn_user;
260 struct chap *conn_chap;
264 struct connection *pdu_connection;
265 struct iscsi_bhs *pdu_bhs;
270 #define KEYS_MAX 1024
273 char *keys_names[KEYS_MAX];
274 char *keys_values[KEYS_MAX];
276 size_t keys_data_len;
279 #define CHAP_CHALLENGE_LEN 1024
280 #define CHAP_DIGEST_LEN 16 /* Equal to MD5 digest size. */
283 unsigned char chap_id;
284 char chap_challenge[CHAP_CHALLENGE_LEN];
285 char chap_response[CHAP_DIGEST_LEN];
290 unsigned char rchap_id;
291 void *rchap_challenge;
292 size_t rchap_challenge_len;
295 struct chap *chap_new(void);
296 char *chap_get_id(const struct chap *chap);
297 char *chap_get_challenge(const struct chap *chap);
298 int chap_receive(struct chap *chap, const char *response);
299 int chap_authenticate(struct chap *chap,
301 void chap_delete(struct chap *chap);
303 struct rchap *rchap_new(const char *secret);
304 int rchap_receive(struct rchap *rchap,
305 const char *id, const char *challenge);
306 char *rchap_get_response(struct rchap *rchap);
307 void rchap_delete(struct rchap *rchap);
309 int parse_conf(struct conf *conf, const char *path);
310 int uclparse_conf(struct conf *conf, const char *path);
312 struct conf *conf_new(void);
313 struct conf *conf_new_from_kernel(void);
314 void conf_delete(struct conf *conf);
315 int conf_verify(struct conf *conf);
317 struct auth_group *auth_group_new(struct conf *conf, const char *name);
318 void auth_group_delete(struct auth_group *ag);
319 struct auth_group *auth_group_find(const struct conf *conf,
321 int auth_group_set_type(struct auth_group *ag,
324 const struct auth *auth_new_chap(struct auth_group *ag,
325 const char *user, const char *secret);
326 const struct auth *auth_new_chap_mutual(struct auth_group *ag,
327 const char *user, const char *secret,
328 const char *user2, const char *secret2);
329 const struct auth *auth_find(const struct auth_group *ag,
332 const struct auth_name *auth_name_new(struct auth_group *ag,
333 const char *initiator_name);
334 bool auth_name_defined(const struct auth_group *ag);
335 const struct auth_name *auth_name_find(const struct auth_group *ag,
336 const char *initiator_name);
337 int auth_name_check(const struct auth_group *ag,
338 const char *initiator_name);
340 const struct auth_portal *auth_portal_new(struct auth_group *ag,
341 const char *initiator_portal);
342 bool auth_portal_defined(const struct auth_group *ag);
343 const struct auth_portal *auth_portal_find(const struct auth_group *ag,
344 const struct sockaddr_storage *sa);
345 int auth_portal_check(const struct auth_group *ag,
346 const struct sockaddr_storage *sa);
348 struct portal_group *portal_group_new(struct conf *conf, const char *name);
349 void portal_group_delete(struct portal_group *pg);
350 struct portal_group *portal_group_find(const struct conf *conf,
352 int portal_group_add_listen(struct portal_group *pg,
353 const char *listen, bool iser);
354 int portal_group_set_filter(struct portal_group *pg,
356 int portal_group_set_offload(struct portal_group *pg,
357 const char *offload);
358 int portal_group_set_redirection(struct portal_group *pg,
361 int isns_new(struct conf *conf, const char *addr);
362 void isns_delete(struct isns *is);
363 void isns_register(struct isns *isns, struct isns *oldisns);
364 void isns_check(struct isns *isns);
365 void isns_deregister(struct isns *isns);
367 struct pport *pport_new(struct conf *conf, const char *name,
369 struct pport *pport_find(const struct conf *conf, const char *name);
370 struct pport *pport_copy(struct pport *pport, struct conf *conf);
371 void pport_delete(struct pport *pport);
373 struct port *port_new(struct conf *conf, struct target *target,
374 struct portal_group *pg);
375 struct port *port_new_ioctl(struct conf *conf, struct target *target,
377 struct port *port_new_pp(struct conf *conf, struct target *target,
379 struct port *port_find(const struct conf *conf, const char *name);
380 struct port *port_find_in_pg(const struct portal_group *pg,
382 void port_delete(struct port *port);
383 int port_is_dummy(struct port *port);
385 struct target *target_new(struct conf *conf, const char *name);
386 void target_delete(struct target *target);
387 struct target *target_find(struct conf *conf,
389 int target_set_redirection(struct target *target,
392 struct lun *lun_new(struct conf *conf, const char *name);
393 void lun_delete(struct lun *lun);
394 struct lun *lun_find(const struct conf *conf, const char *name);
395 void lun_set_backend(struct lun *lun, const char *value);
396 void lun_set_device_type(struct lun *lun, uint8_t value);
397 void lun_set_blocksize(struct lun *lun, size_t value);
398 void lun_set_device_id(struct lun *lun, const char *value);
399 void lun_set_path(struct lun *lun, const char *value);
400 void lun_set_scsiname(struct lun *lun, const char *value);
401 void lun_set_serial(struct lun *lun, const char *value);
402 void lun_set_size(struct lun *lun, size_t value);
403 void lun_set_ctl_lun(struct lun *lun, uint32_t value);
405 struct option *option_new(struct options *os,
406 const char *name, const char *value);
407 void option_delete(struct options *os, struct option *co);
408 struct option *option_find(const struct options *os, const char *name);
409 void option_set(struct option *o, const char *value);
411 void kernel_init(void);
412 int kernel_lun_add(struct lun *lun);
413 int kernel_lun_modify(struct lun *lun);
414 int kernel_lun_remove(struct lun *lun);
415 void kernel_handoff(struct connection *conn);
416 void kernel_limits(const char *offload,
417 int *max_recv_data_segment_length,
418 int *max_send_data_segment_length,
419 int *max_burst_length,
420 int *first_burst_length);
421 int kernel_port_add(struct port *port);
422 int kernel_port_update(struct port *port, struct port *old);
423 int kernel_port_remove(struct port *port);
424 void kernel_capsicate(void);
426 #ifdef ICL_KERNEL_PROXY
427 void kernel_listen(struct addrinfo *ai, bool iser,
429 void kernel_accept(int *connection_id, int *portal_id,
430 struct sockaddr *client_sa,
431 socklen_t *client_salen);
432 void kernel_send(struct pdu *pdu);
433 void kernel_receive(struct pdu *pdu);
436 struct keys *keys_new(void);
437 void keys_delete(struct keys *keys);
438 void keys_load(struct keys *keys, const struct pdu *pdu);
439 void keys_save(struct keys *keys, struct pdu *pdu);
440 const char *keys_find(struct keys *keys, const char *name);
441 void keys_add(struct keys *keys,
442 const char *name, const char *value);
443 void keys_add_int(struct keys *keys,
444 const char *name, int value);
446 struct pdu *pdu_new(struct connection *conn);
447 struct pdu *pdu_new_response(struct pdu *request);
448 void pdu_delete(struct pdu *pdu);
449 void pdu_receive(struct pdu *request);
450 void pdu_send(struct pdu *response);
452 void login(struct connection *conn);
454 void discovery(struct connection *conn);
456 void log_init(int level);
457 void log_set_peer_name(const char *name);
458 void log_set_peer_addr(const char *addr);
459 void log_err(int, const char *, ...)
460 __dead2 __printflike(2, 3);
461 void log_errx(int, const char *, ...)
462 __dead2 __printflike(2, 3);
463 void log_warn(const char *, ...) __printflike(1, 2);
464 void log_warnx(const char *, ...) __printflike(1, 2);
465 void log_debugx(const char *, ...) __printflike(1, 2);
467 char *checked_strdup(const char *);
468 bool valid_iscsi_name(const char *name);
469 void set_timeout(int timeout, int fatal);
470 bool timed_out(void);