1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2006 Shteryana Shopova <syrinx@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * Bridge MIB implementation for SNMPd. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef SNMP_BRIDGE_H 34 #define SNMP_BRIDGE_H 35 36 #define SNMP_BRIDGE_ID_LEN 8 37 38 typedef uint8_t port_id[2]; 39 typedef u_char bridge_id[SNMP_BRIDGE_ID_LEN]; 40 41 #define SNMP_BRIDGE_MAX_PRIORITY 65535 42 43 #define SNMP_BRIDGE_MIN_AGE_TIME 10 44 #define SNMP_BRIDGE_MAX_AGE_TIME 1000000 45 46 #define SNMP_BRIDGE_MIN_TXHC 1 47 #define SNMP_BRIDGE_MAX_TXHC 10 48 49 #define SNMP_BRIDGE_MIN_MAGE 600 50 #define SNMP_BRIDGE_MAX_MAGE 4000 51 52 #define SNMP_BRIDGE_MIN_HTIME 100 53 #define SNMP_BRIDGE_MAX_HTIME 1000 54 55 #define SNMP_BRIDGE_MIN_FDELAY 400 56 #define SNMP_BRIDGE_MAX_FDELAY 3000 57 58 #define SNMP_PORT_PATHCOST_OBSOLETE 65535 59 #define SNMP_PORT_MIN_PATHCOST 0 60 #define SNMP_PORT_MAX_PATHCOST 200000000 61 #define SNMP_PORT_PATHCOST_AUTO 0 62 63 #define SNMP_BRIDGE_DATA_MAXAGE 10 64 #define SNMP_BRIDGE_DATA_MAXAGE_MIN 1 65 #define SNMP_BRIDGE_DATA_MAXAGE_MAX 300 66 67 /* By default poll kernel data every 5 minutes. */ 68 #define SNMP_BRIDGE_POLL_INTERVAL (5 * 60) 69 #define SNMP_BRIDGE_POLL_INTERVAL_MIN 1 70 #define SNMP_BRIDGE_POLL_INTERVAL_MAX 3600 71 72 /* Poll for a topology change once every 30 seconds. */ 73 #define SNMP_BRIDGE_TC_POLL_INTERVAL 30 74 75 struct bridge_if *bridge_get_default(void); 76 77 void bridge_set_default(struct bridge_if *bif); 78 79 const char *bridge_get_default_name(void); 80 81 int bridge_get_data_maxage(void); 82 83 /* 84 * Bridge Addresses Table. 85 */ 86 struct tp_entry { 87 uint32_t sysindex; /* The bridge if sysindex. */ 88 int32_t port_no; 89 enum TpFdbStatus status; 90 uint8_t tp_addr[ETHER_ADDR_LEN]; 91 uint8_t flags; 92 TAILQ_ENTRY(tp_entry) tp_e; 93 }; 94 95 /* 96 * Bridge ports. 97 * The bridge port system interface index is used for a 98 * port number. Transparent bridging statistics and STP 99 * information for a port are also contained here. 100 */ 101 struct bridge_port { 102 /* dot1dBase subtree objects. */ 103 uint32_t sysindex; /* The bridge interface sysindex. */ 104 int32_t port_no; /* The bridge member system index. */ 105 int32_t if_idx; /* SNMP ifIndex from mibII. */ 106 int8_t span_enable; /* Span flag set - private MIB. */ 107 struct asn_oid circuit; /* Unused. */ 108 uint32_t dly_ex_drops; /* Drops on output. */ 109 uint32_t dly_mtu_drops; /* MTU exceeded drops. */ 110 int32_t status; /* The entry status. */ 111 enum TruthValue priv_set; /* The private flag. */ 112 113 /* dot1dStp subtree objects. */ 114 int32_t path_cost; 115 int32_t priority; 116 int32_t design_cost; 117 uint32_t fwd_trans; 118 char p_name[IFNAMSIZ]; /* Not in BRIDGE-MIB. */ 119 enum StpPortState state; 120 enum dot1dStpPortEnable enable; 121 port_id design_port; 122 bridge_id design_root; 123 bridge_id design_bridge; 124 125 /* rstpMib extensions. */ 126 int32_t admin_path_cost; 127 enum TruthValue proto_migr; 128 enum TruthValue admin_edge; 129 enum TruthValue oper_edge; 130 enum TruthValue oper_ptp; 131 enum StpPortAdminPointToPointType admin_ptp; 132 133 /* dot1dTp subtree objects. */ 134 int32_t max_info; 135 int32_t in_frames; 136 int32_t out_frames; 137 int32_t in_drops; 138 139 uint8_t flags; 140 TAILQ_ENTRY(bridge_port) b_p; 141 }; 142 143 /* 144 * A bridge interface. 145 * The system interface index of the bridge is not required neither by the 146 * standard BRIDGE-MIB nor by the private BEGEMOT-BRIDGE-MIB, but is used 147 * as key for looking up the other info for this bridge. 148 */ 149 struct bridge_if { 150 /* dot1dBase subtree objects. */ 151 uint32_t sysindex; /* The system interface index. */ 152 int32_t num_ports; /* Number of ports. */ 153 enum BaseType br_type; /* Bridge type. */ 154 enum RowStatus if_status; /* Bridge status. */ 155 char bif_name[IFNAMSIZ]; /* Bridge interface name. */ 156 struct ether_addr br_addr; /* Bridge address. */ 157 struct bridge_port *f_bp; /* This bridge's first entry 158 * in the base ports TAILQ. */ 159 /* dot1dStp subtree objects. */ 160 int32_t priority; 161 int32_t root_cost; 162 int32_t root_port; 163 int32_t max_age; /* Current max age. */ 164 int32_t hello_time; /* Current hello time. */ 165 int32_t fwd_delay; /* Current forward delay. */ 166 int32_t hold_time; 167 int32_t bridge_max_age; /* Configured max age. */ 168 int32_t bridge_hello_time; /* Configured hello time. */ 169 int32_t bridge_fwd_delay; /* Configured forward delay. */ 170 int32_t tx_hold_count; 171 uint32_t top_changes; 172 enum dot1dStpVersion stp_version; 173 enum dot1dStpProtocolSpecification prot_spec; 174 struct timeval last_tc_time; 175 bridge_id design_root; 176 177 /* dot1dTp subtree objects. */ 178 int32_t lrnt_drops; /* Dropped addresses. */ 179 int32_t age_time; /* Address entry timeout. */ 180 int32_t num_addrs; /* Current # of addresses in cache. */ 181 int32_t max_addrs; /* Max # of addresses in cache. */ 182 struct tp_entry *f_tpa; /* This bridge's first entry in 183 * the tp addresses TAILQ. */ 184 185 time_t entry_age; 186 time_t ports_age; 187 time_t addrs_age; 188 TAILQ_ENTRY(bridge_if) b_if; 189 }; 190 191 void bridge_ifs_fini(void); 192 193 struct bridge_if *bridge_if_find_ifs(uint32_t sysindex); 194 195 struct bridge_if *bridge_if_find_ifname(const char *b_name); 196 197 const char *bridge_if_find_name(uint32_t sysindex); 198 199 int bridge_compare_sysidx(uint32_t i1, uint32_t i2); 200 201 int bridge_attach_newif(struct mibif *ifp); 202 203 struct bridge_if *bridge_first_bif(void); 204 205 struct bridge_if *bridge_next_bif(struct bridge_if *b_pr); 206 207 void bridge_remove_bif(struct bridge_if *bif); 208 209 void bridge_update_all_ports(void); 210 211 void bridge_update_all_addrs(void); 212 213 void bridge_update_all_ifs(void); 214 215 void bridge_update_all(void *arg); 216 217 void bridge_update_tc_time(void *arg); 218 219 void bridge_ifs_dump(void); 220 221 /* Bridge ports. */ 222 void bridge_ports_update_listage(void); 223 224 void bridge_ports_fini(void); 225 226 void bridge_members_free(struct bridge_if *bif); 227 228 struct bridge_port *bridge_new_port(struct mibif *mif, struct bridge_if *bif); 229 230 void bridge_port_remove(struct bridge_port *bp, struct bridge_if *bif); 231 232 struct bridge_port *bridge_port_bif_first(struct bridge_if *bif); 233 234 struct bridge_port *bridge_port_bif_next(struct bridge_port *bp); 235 236 struct bridge_port *bridge_port_find(int32_t if_idx, struct bridge_if *bif); 237 238 void bridge_port_getinfo_mibif(struct mibif *m_if, struct bridge_port *bp); 239 240 int bridge_getinfo_bif_ports(struct bridge_if *bif); 241 242 int bridge_update_memif(struct bridge_if *bif); 243 244 void bridge_ports_dump(struct bridge_if *bif); 245 246 /* Bridge addresses. */ 247 void bridge_addrs_update_listage(void); 248 249 void bridge_addrs_fini(void); 250 251 void bridge_addrs_free(struct bridge_if *bif); 252 253 struct tp_entry *bridge_new_addrs(uint8_t *mac, struct bridge_if *bif); 254 255 void bridge_addrs_remove(struct tp_entry *te, struct bridge_if *bif); 256 257 struct tp_entry *bridge_addrs_find(uint8_t *mac, struct bridge_if *bif); 258 259 struct tp_entry *bridge_addrs_bif_first(struct bridge_if *bif); 260 261 struct tp_entry *bridge_addrs_bif_next(struct tp_entry *te); 262 263 int bridge_getinfo_bif_addrs(struct bridge_if *bif); 264 265 int bridge_update_addrs(struct bridge_if *bif); 266 267 void bridge_addrs_dump(struct bridge_if *bif); 268 269 /* Bridge PF. */ 270 271 void bridge_pf_dump(void); 272 273 /* System specific. */ 274 275 /* Open the socket for the ioctls. */ 276 int bridge_ioctl_init(void); 277 278 /* Load bridge kernel module. */ 279 int bridge_kmod_load(void); 280 281 /* Get the bridge interface information. */ 282 int bridge_getinfo_bif(struct bridge_if *bif); 283 284 /* Get the bridge interface STP parameters. */ 285 int bridge_get_op_param(struct bridge_if *bif); 286 287 /* Set the bridge priority. */ 288 int bridge_set_priority(struct bridge_if *bif, int32_t priority); 289 290 /* Set the bridge max age. */ 291 int bridge_set_maxage(struct bridge_if *bif, int32_t max_age); 292 293 /* Set the bridge hello time.*/ 294 int bridge_set_hello_time(struct bridge_if *bif, int32_t hello_time); 295 296 /* Set the bridge forward delay.*/ 297 int bridge_set_forward_delay(struct bridge_if *bif, int32_t fwd_delay); 298 299 /* Set the bridge address cache max age. */ 300 int bridge_set_aging_time(struct bridge_if *bif, int32_t age_time); 301 302 /* Set the max number of entries in the bridge address cache. */ 303 int bridge_set_max_cache(struct bridge_if *bif, int32_t max_cache); 304 305 /* Set the bridge TX hold count. */ 306 int bridge_set_tx_hold_count(struct bridge_if *bif, int32_t tx_hc); 307 308 /* Set the bridge STP protocol version. */ 309 int bridge_set_stp_version(struct bridge_if *bif, int32_t stp_proto); 310 311 /* Set the bridge interface status to up/down. */ 312 int bridge_set_if_up(const char* b_name, int8_t up); 313 314 /* Create a bridge interface. */ 315 int bridge_create(const char *b_name); 316 317 /* Destroy a bridge interface. */ 318 int bridge_destroy(const char *b_name); 319 320 /* Fetch the bridge mac address. */ 321 u_char *bridge_get_basemac(const char *bif_name, u_char *mac, size_t mlen); 322 323 /* Set a bridge member priority. */ 324 int bridge_port_set_priority(const char *bif_name, struct bridge_port *bp, 325 int32_t priority); 326 327 /* Set a bridge member STP-enabled flag. */ 328 int bridge_port_set_stp_enable(const char *bif_name, struct bridge_port *bp, 329 uint32_t enable); 330 331 /* Set a bridge member STP path cost. */ 332 int bridge_port_set_path_cost(const char *bif_name, struct bridge_port *bp, 333 int32_t path_cost); 334 335 /* Set admin point-to-point link. */ 336 int bridge_port_set_admin_ptp(const char *bif_name, struct bridge_port *bp, 337 uint32_t admin_ptp); 338 339 /* Set admin edge. */ 340 int bridge_port_set_admin_edge(const char *bif_name, struct bridge_port *bp, 341 uint32_t enable); 342 343 /* Set 'private' flag. */ 344 int bridge_port_set_private(const char *bif_name, struct bridge_port *bp, 345 uint32_t priv_set); 346 347 /* Add a bridge member port. */ 348 int bridge_port_addm(struct bridge_port *bp, const char *b_name); 349 350 /* Delete a bridge member port. */ 351 int bridge_port_delm(struct bridge_port *bp, const char *b_name); 352 353 /* Get the current value from the module for bridge PF control. */ 354 int32_t bridge_get_pfval(uint8_t which); 355 356 /* Get/Set a bridge PF control. */ 357 int32_t bridge_do_pfctl(int32_t bridge_ctl, enum snmp_op op, int32_t *val); 358 359 #endif /* SNMP_BRIDGE_H */ 360