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