1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * 6 * This software was developed by Edward Tomasz Napierala under sponsorship 7 * from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 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. 17 * 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 28 * SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef CTLD_H 34 #define CTLD_H 35 36 #include <sys/queue.h> 37 #ifdef ICL_KERNEL_PROXY 38 #include <sys/types.h> 39 #endif 40 #include <sys/socket.h> 41 #include <stdbool.h> 42 #include <libiscsiutil.h> 43 #include <libutil.h> 44 45 #define DEFAULT_CONFIG_PATH "/etc/ctl.conf" 46 #define DEFAULT_PIDFILE "/var/run/ctld.pid" 47 #define DEFAULT_BLOCKSIZE 512 48 #define DEFAULT_CD_BLOCKSIZE 2048 49 50 #define MAX_LUNS 1024 51 #define MAX_NAME_LEN 223 52 #define MAX_DATA_SEGMENT_LENGTH (128 * 1024) 53 #define SOCKBUF_SIZE 1048576 54 55 struct auth { 56 TAILQ_ENTRY(auth) a_next; 57 struct auth_group *a_auth_group; 58 char *a_user; 59 char *a_secret; 60 char *a_mutual_user; 61 char *a_mutual_secret; 62 }; 63 64 struct auth_name { 65 TAILQ_ENTRY(auth_name) an_next; 66 struct auth_group *an_auth_group; 67 char *an_initiator_name; 68 }; 69 70 struct auth_portal { 71 TAILQ_ENTRY(auth_portal) ap_next; 72 struct auth_group *ap_auth_group; 73 char *ap_initiator_portal; 74 struct sockaddr_storage ap_sa; 75 int ap_mask; 76 }; 77 78 #define AG_TYPE_UNKNOWN 0 79 #define AG_TYPE_DENY 1 80 #define AG_TYPE_NO_AUTHENTICATION 2 81 #define AG_TYPE_CHAP 3 82 #define AG_TYPE_CHAP_MUTUAL 4 83 84 struct auth_group { 85 TAILQ_ENTRY(auth_group) ag_next; 86 struct conf *ag_conf; 87 char *ag_name; 88 struct target *ag_target; 89 int ag_type; 90 TAILQ_HEAD(, auth) ag_auths; 91 TAILQ_HEAD(, auth_name) ag_names; 92 TAILQ_HEAD(, auth_portal) ag_portals; 93 }; 94 95 struct portal { 96 TAILQ_ENTRY(portal) p_next; 97 struct portal_group *p_portal_group; 98 bool p_iser; 99 char *p_listen; 100 struct addrinfo *p_ai; 101 #ifdef ICL_KERNEL_PROXY 102 int p_id; 103 #endif 104 105 TAILQ_HEAD(, target) p_targets; 106 int p_socket; 107 }; 108 109 TAILQ_HEAD(options, option); 110 111 #define PG_FILTER_UNKNOWN 0 112 #define PG_FILTER_NONE 1 113 #define PG_FILTER_PORTAL 2 114 #define PG_FILTER_PORTAL_NAME 3 115 #define PG_FILTER_PORTAL_NAME_AUTH 4 116 117 struct portal_group { 118 TAILQ_ENTRY(portal_group) pg_next; 119 struct conf *pg_conf; 120 struct options pg_options; 121 char *pg_name; 122 struct auth_group *pg_discovery_auth_group; 123 int pg_discovery_filter; 124 int pg_foreign; 125 bool pg_unassigned; 126 TAILQ_HEAD(, portal) pg_portals; 127 TAILQ_HEAD(, port) pg_ports; 128 char *pg_offload; 129 char *pg_redirection; 130 int pg_dscp; 131 int pg_pcp; 132 133 uint16_t pg_tag; 134 }; 135 136 struct pport { 137 TAILQ_ENTRY(pport) pp_next; 138 TAILQ_HEAD(, port) pp_ports; 139 struct conf *pp_conf; 140 char *pp_name; 141 142 uint32_t pp_ctl_port; 143 }; 144 145 struct port { 146 TAILQ_ENTRY(port) p_next; 147 TAILQ_ENTRY(port) p_pgs; 148 TAILQ_ENTRY(port) p_pps; 149 TAILQ_ENTRY(port) p_ts; 150 struct conf *p_conf; 151 char *p_name; 152 struct auth_group *p_auth_group; 153 struct portal_group *p_portal_group; 154 struct pport *p_pport; 155 struct target *p_target; 156 157 int p_ioctl_port; 158 int p_ioctl_pp; 159 int p_ioctl_vp; 160 uint32_t p_ctl_port; 161 }; 162 163 struct option { 164 TAILQ_ENTRY(option) o_next; 165 char *o_name; 166 char *o_value; 167 }; 168 169 struct lun { 170 TAILQ_ENTRY(lun) l_next; 171 struct conf *l_conf; 172 struct options l_options; 173 char *l_name; 174 char *l_backend; 175 uint8_t l_device_type; 176 int l_blocksize; 177 char *l_device_id; 178 char *l_path; 179 char *l_scsiname; 180 char *l_serial; 181 int64_t l_size; 182 183 int l_ctl_lun; 184 }; 185 186 struct target { 187 TAILQ_ENTRY(target) t_next; 188 struct conf *t_conf; 189 struct lun *t_luns[MAX_LUNS]; 190 struct auth_group *t_auth_group; 191 TAILQ_HEAD(, port) t_ports; 192 char *t_name; 193 char *t_alias; 194 char *t_redirection; 195 }; 196 197 struct isns { 198 TAILQ_ENTRY(isns) i_next; 199 struct conf *i_conf; 200 char *i_addr; 201 struct addrinfo *i_ai; 202 }; 203 204 struct conf { 205 char *conf_pidfile_path; 206 TAILQ_HEAD(, lun) conf_luns; 207 TAILQ_HEAD(, target) conf_targets; 208 TAILQ_HEAD(, auth_group) conf_auth_groups; 209 TAILQ_HEAD(, port) conf_ports; 210 TAILQ_HEAD(, portal_group) conf_portal_groups; 211 TAILQ_HEAD(, pport) conf_pports; 212 TAILQ_HEAD(, isns) conf_isns; 213 int conf_isns_period; 214 int conf_isns_timeout; 215 int conf_debug; 216 int conf_timeout; 217 int conf_maxproc; 218 219 #ifdef ICL_KERNEL_PROXY 220 int conf_portal_id; 221 #endif 222 struct pidfh *conf_pidfh; 223 224 bool conf_default_pg_defined; 225 bool conf_default_ag_defined; 226 bool conf_kernel_port_on; 227 }; 228 229 #define CONN_SESSION_TYPE_NONE 0 230 #define CONN_SESSION_TYPE_DISCOVERY 1 231 #define CONN_SESSION_TYPE_NORMAL 2 232 233 struct ctld_connection { 234 struct connection conn; 235 struct portal *conn_portal; 236 struct port *conn_port; 237 struct target *conn_target; 238 int conn_session_type; 239 char *conn_initiator_name; 240 char *conn_initiator_addr; 241 char *conn_initiator_alias; 242 uint8_t conn_initiator_isid[6]; 243 struct sockaddr_storage conn_initiator_sa; 244 int conn_max_recv_data_segment_limit; 245 int conn_max_send_data_segment_limit; 246 int conn_max_burst_limit; 247 int conn_first_burst_limit; 248 const char *conn_user; 249 struct chap *conn_chap; 250 }; 251 252 int parse_conf(struct conf *conf, const char *path); 253 int uclparse_conf(struct conf *conf, const char *path); 254 255 struct conf *conf_new(void); 256 struct conf *conf_new_from_kernel(void); 257 void conf_delete(struct conf *conf); 258 int conf_verify(struct conf *conf); 259 260 struct auth_group *auth_group_new(struct conf *conf, const char *name); 261 void auth_group_delete(struct auth_group *ag); 262 struct auth_group *auth_group_find(const struct conf *conf, 263 const char *name); 264 int auth_group_set_type(struct auth_group *ag, 265 const char *type); 266 267 const struct auth *auth_new_chap(struct auth_group *ag, 268 const char *user, const char *secret); 269 const struct auth *auth_new_chap_mutual(struct auth_group *ag, 270 const char *user, const char *secret, 271 const char *user2, const char *secret2); 272 const struct auth *auth_find(const struct auth_group *ag, 273 const char *user); 274 275 const struct auth_name *auth_name_new(struct auth_group *ag, 276 const char *initiator_name); 277 bool auth_name_defined(const struct auth_group *ag); 278 const struct auth_name *auth_name_find(const struct auth_group *ag, 279 const char *initiator_name); 280 int auth_name_check(const struct auth_group *ag, 281 const char *initiator_name); 282 283 const struct auth_portal *auth_portal_new(struct auth_group *ag, 284 const char *initiator_portal); 285 bool auth_portal_defined(const struct auth_group *ag); 286 const struct auth_portal *auth_portal_find(const struct auth_group *ag, 287 const struct sockaddr_storage *sa); 288 int auth_portal_check(const struct auth_group *ag, 289 const struct sockaddr_storage *sa); 290 291 struct portal_group *portal_group_new(struct conf *conf, const char *name); 292 void portal_group_delete(struct portal_group *pg); 293 struct portal_group *portal_group_find(const struct conf *conf, 294 const char *name); 295 int portal_group_add_listen(struct portal_group *pg, 296 const char *listen, bool iser); 297 int portal_group_set_filter(struct portal_group *pg, 298 const char *filter); 299 int portal_group_set_offload(struct portal_group *pg, 300 const char *offload); 301 int portal_group_set_redirection(struct portal_group *pg, 302 const char *addr); 303 304 int isns_new(struct conf *conf, const char *addr); 305 void isns_delete(struct isns *is); 306 void isns_register(struct isns *isns, struct isns *oldisns); 307 void isns_check(struct isns *isns); 308 void isns_deregister(struct isns *isns); 309 310 struct pport *pport_new(struct conf *conf, const char *name, 311 uint32_t ctl_port); 312 struct pport *pport_find(const struct conf *conf, const char *name); 313 struct pport *pport_copy(struct pport *pport, struct conf *conf); 314 void pport_delete(struct pport *pport); 315 316 struct port *port_new(struct conf *conf, struct target *target, 317 struct portal_group *pg); 318 struct port *port_new_ioctl(struct conf *conf, struct target *target, 319 int pp, int vp); 320 struct port *port_new_pp(struct conf *conf, struct target *target, 321 struct pport *pp); 322 struct port *port_find(const struct conf *conf, const char *name); 323 struct port *port_find_in_pg(const struct portal_group *pg, 324 const char *target); 325 void port_delete(struct port *port); 326 int port_is_dummy(struct port *port); 327 328 struct target *target_new(struct conf *conf, const char *name); 329 void target_delete(struct target *target); 330 struct target *target_find(struct conf *conf, 331 const char *name); 332 int target_set_redirection(struct target *target, 333 const char *addr); 334 335 struct lun *lun_new(struct conf *conf, const char *name); 336 void lun_delete(struct lun *lun); 337 struct lun *lun_find(const struct conf *conf, const char *name); 338 void lun_set_backend(struct lun *lun, const char *value); 339 void lun_set_device_type(struct lun *lun, uint8_t value); 340 void lun_set_blocksize(struct lun *lun, size_t value); 341 void lun_set_device_id(struct lun *lun, const char *value); 342 void lun_set_path(struct lun *lun, const char *value); 343 void lun_set_scsiname(struct lun *lun, const char *value); 344 void lun_set_serial(struct lun *lun, const char *value); 345 void lun_set_size(struct lun *lun, size_t value); 346 void lun_set_ctl_lun(struct lun *lun, uint32_t value); 347 348 struct option *option_new(struct options *os, 349 const char *name, const char *value); 350 void option_delete(struct options *os, struct option *co); 351 struct option *option_find(const struct options *os, const char *name); 352 void option_set(struct option *o, const char *value); 353 354 void kernel_init(void); 355 int kernel_lun_add(struct lun *lun); 356 int kernel_lun_modify(struct lun *lun); 357 int kernel_lun_remove(struct lun *lun); 358 void kernel_handoff(struct ctld_connection *conn); 359 void kernel_limits(const char *offload, int s, 360 int *max_recv_data_segment_length, 361 int *max_send_data_segment_length, 362 int *max_burst_length, 363 int *first_burst_length); 364 int kernel_port_add(struct port *port); 365 int kernel_port_update(struct port *port, struct port *old); 366 int kernel_port_remove(struct port *port); 367 void kernel_capsicate(void); 368 369 #ifdef ICL_KERNEL_PROXY 370 void kernel_listen(struct addrinfo *ai, bool iser, 371 int portal_id); 372 void kernel_accept(int *connection_id, int *portal_id, 373 struct sockaddr *client_sa, 374 socklen_t *client_salen); 375 void kernel_send(struct pdu *pdu); 376 void kernel_receive(struct pdu *pdu); 377 #endif 378 379 void login(struct ctld_connection *conn); 380 381 void discovery(struct ctld_connection *conn); 382 383 bool valid_iscsi_name(const char *name); 384 void set_timeout(int timeout, int fatal); 385 386 #endif /* !CTLD_H */ 387