1/** 2 * @file 3 * Management Information Base II (RFC1213) IP objects and functions. 4 */ 5 6/* 7 * Copyright (c) 2006 Axon Digital Design B.V., The Netherlands. 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without modification, 11 * are permitted provided that the following conditions are met: 12 * 13 * 1. Redistributions of source code must retain the above copyright notice, 14 * this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright notice, 16 * this list of conditions and the following disclaimer in the documentation 17 * and/or other materials provided with the distribution. 18 * 3. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 22 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 24 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 26 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 29 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 30 * OF SUCH DAMAGE. 31 * 32 * Author: Dirk Ziegelmeier <dziegel@gmx.de> 33 * Christiaan Simons <christiaan.simons@axon.tv> 34 */ 35 36#include "lwip/snmp.h" 37#include "lwip/apps/snmp.h" 38#include "lwip/apps/snmp_core.h" 39#include "lwip/apps/snmp_mib2.h" 40#include "lwip/apps/snmp_table.h" 41#include "lwip/apps/snmp_scalar.h" 42#include "lwip/stats.h" 43#include "lwip/netif.h" 44#include "lwip/ip.h" 45#include "lwip/etharp.h" 46 47#if LWIP_SNMP && SNMP_LWIP_MIB2 48 49#if SNMP_USE_NETCONN 50#define SYNC_NODE_NAME(node_name) node_name ## _synced 51#define CREATE_LWIP_SYNC_NODE(oid, node_name) \ 52 static const struct snmp_threadsync_node node_name ## _synced = SNMP_CREATE_THREAD_SYNC_NODE(oid, &node_name.node, &snmp_mib2_lwip_locks); 53#else 54#define SYNC_NODE_NAME(node_name) node_name 55#define CREATE_LWIP_SYNC_NODE(oid, node_name) 56#endif 57 58#if LWIP_IPV4 59/* --- ip .1.3.6.1.2.1.4 ----------------------------------------------------- */ 60 61static s16_t 62ip_get_value(struct snmp_node_instance *instance, void *value) 63{ 64 s32_t *sint_ptr = (s32_t *)value; 65 u32_t *uint_ptr = (u32_t *)value; 66 67 switch (instance->node->oid) { 68 case 1: /* ipForwarding */ 69#if IP_FORWARD 70 /* forwarding */ 71 *sint_ptr = 1; 72#else 73 /* not-forwarding */ 74 *sint_ptr = 2; 75#endif 76 return sizeof(*sint_ptr); 77 case 2: /* ipDefaultTTL */ 78 *sint_ptr = IP_DEFAULT_TTL; 79 return sizeof(*sint_ptr); 80 case 3: /* ipInReceives */ 81 *uint_ptr = STATS_GET(mib2.ipinreceives); 82 return sizeof(*uint_ptr); 83 case 4: /* ipInHdrErrors */ 84 *uint_ptr = STATS_GET(mib2.ipinhdrerrors); 85 return sizeof(*uint_ptr); 86 case 5: /* ipInAddrErrors */ 87 *uint_ptr = STATS_GET(mib2.ipinaddrerrors); 88 return sizeof(*uint_ptr); 89 case 6: /* ipForwDatagrams */ 90 *uint_ptr = STATS_GET(mib2.ipforwdatagrams); 91 return sizeof(*uint_ptr); 92 case 7: /* ipInUnknownProtos */ 93 *uint_ptr = STATS_GET(mib2.ipinunknownprotos); 94 return sizeof(*uint_ptr); 95 case 8: /* ipInDiscards */ 96 *uint_ptr = STATS_GET(mib2.ipindiscards); 97 return sizeof(*uint_ptr); 98 case 9: /* ipInDelivers */ 99 *uint_ptr = STATS_GET(mib2.ipindelivers); 100 return sizeof(*uint_ptr); 101 case 10: /* ipOutRequests */ 102 *uint_ptr = STATS_GET(mib2.ipoutrequests); 103 return sizeof(*uint_ptr); 104 case 11: /* ipOutDiscards */ 105 *uint_ptr = STATS_GET(mib2.ipoutdiscards); 106 return sizeof(*uint_ptr); 107 case 12: /* ipOutNoRoutes */ 108 *uint_ptr = STATS_GET(mib2.ipoutnoroutes); 109 return sizeof(*uint_ptr); 110 case 13: /* ipReasmTimeout */ 111#if IP_REASSEMBLY 112 *sint_ptr = IP_REASS_MAXAGE; 113#else 114 *sint_ptr = 0; 115#endif 116 return sizeof(*sint_ptr); 117 case 14: /* ipReasmReqds */ 118 *uint_ptr = STATS_GET(mib2.ipreasmreqds); 119 return sizeof(*uint_ptr); 120 case 15: /* ipReasmOKs */ 121 *uint_ptr = STATS_GET(mib2.ipreasmoks); 122 return sizeof(*uint_ptr); 123 case 16: /* ipReasmFails */ 124 *uint_ptr = STATS_GET(mib2.ipreasmfails); 125 return sizeof(*uint_ptr); 126 case 17: /* ipFragOKs */ 127 *uint_ptr = STATS_GET(mib2.ipfragoks); 128 return sizeof(*uint_ptr); 129 case 18: /* ipFragFails */ 130 *uint_ptr = STATS_GET(mib2.ipfragfails); 131 return sizeof(*uint_ptr); 132 case 19: /* ipFragCreates */ 133 *uint_ptr = STATS_GET(mib2.ipfragcreates); 134 return sizeof(*uint_ptr); 135 case 23: /* ipRoutingDiscards: not supported -> always 0 */ 136 *uint_ptr = 0; 137 return sizeof(*uint_ptr); 138 default: 139 LWIP_DEBUGF(SNMP_MIB_DEBUG, ("ip_get_value(): unknown id: %"S32_F"\n", instance->node->oid)); 140 break; 141 } 142 143 return 0; 144} 145 146/** 147 * Test ip object value before setting. 148 * 149 * @param instance node instance 150 * @param len return value space (in bytes) 151 * @param value points to (varbind) space to copy value from. 152 * 153 * @note we allow set if the value matches the hardwired value, 154 * otherwise return badvalue. 155 */ 156static snmp_err_t 157ip_set_test(struct snmp_node_instance *instance, u16_t len, void *value) 158{ 159 snmp_err_t ret = SNMP_ERR_WRONGVALUE; 160 s32_t *sint_ptr = (s32_t *)value; 161 162 LWIP_UNUSED_ARG(len); 163 switch (instance->node->oid) { 164 case 1: /* ipForwarding */ 165#if IP_FORWARD 166 /* forwarding */ 167 if (*sint_ptr == 1) 168#else 169 /* not-forwarding */ 170 if (*sint_ptr == 2) 171#endif 172 { 173 ret = SNMP_ERR_NOERROR; 174 } 175 break; 176 case 2: /* ipDefaultTTL */ 177 if (*sint_ptr == IP_DEFAULT_TTL) { 178 ret = SNMP_ERR_NOERROR; 179 } 180 break; 181 default: 182 LWIP_DEBUGF(SNMP_MIB_DEBUG, ("ip_set_test(): unknown id: %"S32_F"\n", instance->node->oid)); 183 break; 184 } 185 186 return ret; 187} 188 189static snmp_err_t 190ip_set_value(struct snmp_node_instance *instance, u16_t len, void *value) 191{ 192 LWIP_UNUSED_ARG(instance); 193 LWIP_UNUSED_ARG(len); 194 LWIP_UNUSED_ARG(value); 195 /* nothing to do here because in set_test we only accept values being the same as our own stored value -> no need to store anything */ 196 return SNMP_ERR_NOERROR; 197} 198 199/* --- ipAddrTable --- */ 200 201/* list of allowed value ranges for incoming OID */ 202static const struct snmp_oid_range ip_AddrTable_oid_ranges[] = { 203 { 0, 0xff }, /* IP A */ 204 { 0, 0xff }, /* IP B */ 205 { 0, 0xff }, /* IP C */ 206 { 0, 0xff } /* IP D */ 207}; 208 209static snmp_err_t 210ip_AddrTable_get_cell_value_core(struct netif *netif, const u32_t *column, union snmp_variant_value *value, u32_t *value_len) 211{ 212 LWIP_UNUSED_ARG(value_len); 213 214 switch (*column) { 215 case 1: /* ipAdEntAddr */ 216 value->u32 = netif_ip4_addr(netif)->addr; 217 break; 218 case 2: /* ipAdEntIfIndex */ 219 value->u32 = netif_to_num(netif); 220 break; 221 case 3: /* ipAdEntNetMask */ 222 value->u32 = netif_ip4_netmask(netif)->addr; 223 break; 224 case 4: /* ipAdEntBcastAddr */ 225 /* lwIP oddity, there's no broadcast 226 address in the netif we can rely on */ 227 value->u32 = IPADDR_BROADCAST & 1; 228 break; 229 case 5: /* ipAdEntReasmMaxSize */ 230#if IP_REASSEMBLY 231 /* @todo The theoretical maximum is IP_REASS_MAX_PBUFS * size of the pbufs, 232 * but only if receiving one fragmented packet at a time. 233 * The current solution is to calculate for 2 simultaneous packets... 234 */ 235 value->u32 = (IP_HLEN + ((IP_REASS_MAX_PBUFS / 2) * 236 (PBUF_POOL_BUFSIZE - PBUF_LINK_ENCAPSULATION_HLEN - PBUF_LINK_HLEN - IP_HLEN))); 237#else 238 /** @todo returning MTU would be a bad thing and 239 returning a wild guess like '576' isn't good either */ 240 value->u32 = 0; 241#endif 242 break; 243 default: 244 return SNMP_ERR_NOSUCHINSTANCE; 245 } 246 247 return SNMP_ERR_NOERROR; 248} 249 250static snmp_err_t 251ip_AddrTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len) 252{ 253 ip4_addr_t ip; 254 struct netif *netif; 255 256 /* check if incoming OID length and if values are in plausible range */ 257 if (!snmp_oid_in_range(row_oid, row_oid_len, ip_AddrTable_oid_ranges, LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges))) { 258 return SNMP_ERR_NOSUCHINSTANCE; 259 } 260 261 /* get IP from incoming OID */ 262 snmp_oid_to_ip4(&row_oid[0], &ip); /* we know it succeeds because of oid_in_range check above */ 263 264 /* find netif with requested ip */ 265 NETIF_FOREACH(netif) { 266 if (ip4_addr_cmp(&ip, netif_ip4_addr(netif))) { 267 /* fill in object properties */ 268 return ip_AddrTable_get_cell_value_core(netif, column, value, value_len); 269 } 270 } 271 272 /* not found */ 273 return SNMP_ERR_NOSUCHINSTANCE; 274} 275 276static snmp_err_t 277ip_AddrTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len) 278{ 279 struct netif *netif; 280 struct snmp_next_oid_state state; 281 u32_t result_temp[LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)]; 282 283 /* init struct to search next oid */ 284 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)); 285 286 /* iterate over all possible OIDs to find the next one */ 287 NETIF_FOREACH(netif) { 288 u32_t test_oid[LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)]; 289 snmp_ip4_to_oid(netif_ip4_addr(netif), &test_oid[0]); 290 291 /* check generated OID: is it a candidate for the next one? */ 292 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges), netif); 293 } 294 295 /* did we find a next one? */ 296 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 297 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 298 /* fill in object properties */ 299 return ip_AddrTable_get_cell_value_core((struct netif *)state.reference, column, value, value_len); 300 } 301 302 /* not found */ 303 return SNMP_ERR_NOSUCHINSTANCE; 304} 305 306/* --- ipRouteTable --- */ 307 308/* list of allowed value ranges for incoming OID */ 309static const struct snmp_oid_range ip_RouteTable_oid_ranges[] = { 310 { 0, 0xff }, /* IP A */ 311 { 0, 0xff }, /* IP B */ 312 { 0, 0xff }, /* IP C */ 313 { 0, 0xff }, /* IP D */ 314}; 315 316static snmp_err_t 317ip_RouteTable_get_cell_value_core(struct netif *netif, u8_t default_route, const u32_t *column, union snmp_variant_value *value, u32_t *value_len) 318{ 319 switch (*column) { 320 case 1: /* ipRouteDest */ 321 if (default_route) { 322 /* default rte has 0.0.0.0 dest */ 323 value->u32 = IP4_ADDR_ANY4->addr; 324 } else { 325 /* netifs have netaddress dest */ 326 ip4_addr_t tmp; 327 ip4_addr_get_network(&tmp, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 328 value->u32 = tmp.addr; 329 } 330 break; 331 case 2: /* ipRouteIfIndex */ 332 value->u32 = netif_to_num(netif); 333 break; 334 case 3: /* ipRouteMetric1 */ 335 if (default_route) { 336 value->s32 = 1; /* default */ 337 } else { 338 value->s32 = 0; /* normal */ 339 } 340 break; 341 case 4: /* ipRouteMetric2 */ 342 case 5: /* ipRouteMetric3 */ 343 case 6: /* ipRouteMetric4 */ 344 value->s32 = -1; /* none */ 345 break; 346 case 7: /* ipRouteNextHop */ 347 if (default_route) { 348 /* default rte: gateway */ 349 value->u32 = netif_ip4_gw(netif)->addr; 350 } else { 351 /* other rtes: netif ip_addr */ 352 value->u32 = netif_ip4_addr(netif)->addr; 353 } 354 break; 355 case 8: /* ipRouteType */ 356 if (default_route) { 357 /* default rte is indirect */ 358 value->u32 = 4; /* indirect */ 359 } else { 360 /* other rtes are direct */ 361 value->u32 = 3; /* direct */ 362 } 363 break; 364 case 9: /* ipRouteProto */ 365 /* locally defined routes */ 366 value->u32 = 2; /* local */ 367 break; 368 case 10: /* ipRouteAge */ 369 /* @todo (sysuptime - timestamp last change) / 100 */ 370 value->u32 = 0; 371 break; 372 case 11: /* ipRouteMask */ 373 if (default_route) { 374 /* default rte use 0.0.0.0 mask */ 375 value->u32 = IP4_ADDR_ANY4->addr; 376 } else { 377 /* other rtes use netmask */ 378 value->u32 = netif_ip4_netmask(netif)->addr; 379 } 380 break; 381 case 12: /* ipRouteMetric5 */ 382 value->s32 = -1; /* none */ 383 break; 384 case 13: /* ipRouteInfo */ 385 value->const_ptr = snmp_zero_dot_zero.id; 386 *value_len = snmp_zero_dot_zero.len * sizeof(u32_t); 387 break; 388 default: 389 return SNMP_ERR_NOSUCHINSTANCE; 390 } 391 392 return SNMP_ERR_NOERROR; 393} 394 395static snmp_err_t 396ip_RouteTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len) 397{ 398 ip4_addr_t test_ip; 399 struct netif *netif; 400 401 /* check if incoming OID length and if values are in plausible range */ 402 if (!snmp_oid_in_range(row_oid, row_oid_len, ip_RouteTable_oid_ranges, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges))) { 403 return SNMP_ERR_NOSUCHINSTANCE; 404 } 405 406 /* get IP and port from incoming OID */ 407 snmp_oid_to_ip4(&row_oid[0], &test_ip); /* we know it succeeds because of oid_in_range check above */ 408 409 /* default route is on default netif */ 410 if (ip4_addr_isany_val(test_ip) && (netif_default != NULL)) { 411 /* fill in object properties */ 412 return ip_RouteTable_get_cell_value_core(netif_default, 1, column, value, value_len); 413 } 414 415 /* find netif with requested route */ 416 NETIF_FOREACH(netif) { 417 ip4_addr_t dst; 418 ip4_addr_get_network(&dst, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 419 420 if (ip4_addr_cmp(&dst, &test_ip)) { 421 /* fill in object properties */ 422 return ip_RouteTable_get_cell_value_core(netif, 0, column, value, value_len); 423 } 424 } 425 426 /* not found */ 427 return SNMP_ERR_NOSUCHINSTANCE; 428} 429 430static snmp_err_t 431ip_RouteTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len) 432{ 433 struct netif *netif; 434 struct snmp_next_oid_state state; 435 u32_t result_temp[LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)]; 436 u32_t test_oid[LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)]; 437 438 /* init struct to search next oid */ 439 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)); 440 441 /* check default route */ 442 if (netif_default != NULL) { 443 snmp_ip4_to_oid(IP4_ADDR_ANY4, &test_oid[0]); 444 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges), netif_default); 445 } 446 447 /* iterate over all possible OIDs to find the next one */ 448 NETIF_FOREACH(netif) { 449 ip4_addr_t dst; 450 ip4_addr_get_network(&dst, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 451 452 /* check generated OID: is it a candidate for the next one? */ 453 if (!ip4_addr_isany_val(dst)) { 454 snmp_ip4_to_oid(&dst, &test_oid[0]); 455 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges), netif); 456 } 457 } 458 459 /* did we find a next one? */ 460 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 461 ip4_addr_t dst; 462 snmp_oid_to_ip4(&result_temp[0], &dst); 463 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 464 /* fill in object properties */ 465 return ip_RouteTable_get_cell_value_core((struct netif *)state.reference, ip4_addr_isany_val(dst), column, value, value_len); 466 } else { 467 /* not found */ 468 return SNMP_ERR_NOSUCHINSTANCE; 469 } 470} 471 472#if LWIP_ARP && LWIP_IPV4 473/* --- ipNetToMediaTable --- */ 474 475/* list of allowed value ranges for incoming OID */ 476static const struct snmp_oid_range ip_NetToMediaTable_oid_ranges[] = { 477 { 1, 0xff }, /* IfIndex */ 478 { 0, 0xff }, /* IP A */ 479 { 0, 0xff }, /* IP B */ 480 { 0, 0xff }, /* IP C */ 481 { 0, 0xff } /* IP D */ 482}; 483 484static snmp_err_t 485ip_NetToMediaTable_get_cell_value_core(size_t arp_table_index, const u32_t *column, union snmp_variant_value *value, u32_t *value_len) 486{ 487 ip4_addr_t *ip; 488 struct netif *netif; 489 struct eth_addr *ethaddr; 490 491 etharp_get_entry(arp_table_index, &ip, &netif, ðaddr); 492 493 /* value */ 494 switch (*column) { 495 case 1: /* atIfIndex / ipNetToMediaIfIndex */ 496 value->u32 = netif_to_num(netif); 497 break; 498 case 2: /* atPhysAddress / ipNetToMediaPhysAddress */ 499 value->ptr = ethaddr; 500 *value_len = sizeof(*ethaddr); 501 break; 502 case 3: /* atNetAddress / ipNetToMediaNetAddress */ 503 value->u32 = ip->addr; 504 break; 505 case 4: /* ipNetToMediaType */ 506 value->u32 = 3; /* dynamic*/ 507 break; 508 default: 509 return SNMP_ERR_NOSUCHINSTANCE; 510 } 511 512 return SNMP_ERR_NOERROR; 513} 514 515static snmp_err_t 516ip_NetToMediaTable_get_cell_value(const u32_t *column, const u32_t *row_oid, u8_t row_oid_len, union snmp_variant_value *value, u32_t *value_len) 517{ 518 ip4_addr_t ip_in; 519 u8_t netif_index; 520 size_t i; 521 522 /* check if incoming OID length and if values are in plausible range */ 523 if (!snmp_oid_in_range(row_oid, row_oid_len, ip_NetToMediaTable_oid_ranges, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges))) { 524 return SNMP_ERR_NOSUCHINSTANCE; 525 } 526 527 /* get IP from incoming OID */ 528 netif_index = (u8_t)row_oid[0]; 529 snmp_oid_to_ip4(&row_oid[1], &ip_in); /* we know it succeeds because of oid_in_range check above */ 530 531 /* find requested entry */ 532 for (i = 0; i < ARP_TABLE_SIZE; i++) { 533 ip4_addr_t *ip; 534 struct netif *netif; 535 struct eth_addr *ethaddr; 536 537 if (etharp_get_entry(i, &ip, &netif, ðaddr)) { 538 if ((netif_index == netif_to_num(netif)) && ip4_addr_cmp(&ip_in, ip)) { 539 /* fill in object properties */ 540 return ip_NetToMediaTable_get_cell_value_core(i, column, value, value_len); 541 } 542 } 543 } 544 545 /* not found */ 546 return SNMP_ERR_NOSUCHINSTANCE; 547} 548 549static snmp_err_t 550ip_NetToMediaTable_get_next_cell_instance_and_value(const u32_t *column, struct snmp_obj_id *row_oid, union snmp_variant_value *value, u32_t *value_len) 551{ 552 size_t i; 553 struct snmp_next_oid_state state; 554 u32_t result_temp[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)]; 555 556 /* init struct to search next oid */ 557 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)); 558 559 /* iterate over all possible OIDs to find the next one */ 560 for (i = 0; i < ARP_TABLE_SIZE; i++) { 561 ip4_addr_t *ip; 562 struct netif *netif; 563 struct eth_addr *ethaddr; 564 565 if (etharp_get_entry(i, &ip, &netif, ðaddr)) { 566 u32_t test_oid[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)]; 567 568 test_oid[0] = netif_to_num(netif); 569 snmp_ip4_to_oid(ip, &test_oid[1]); 570 571 /* check generated OID: is it a candidate for the next one? */ 572 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges), LWIP_PTR_NUMERIC_CAST(void *, i)); 573 } 574 } 575 576 /* did we find a next one? */ 577 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 578 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 579 /* fill in object properties */ 580 return ip_NetToMediaTable_get_cell_value_core(LWIP_PTR_NUMERIC_CAST(size_t, state.reference), column, value, value_len); 581 } 582 583 /* not found */ 584 return SNMP_ERR_NOSUCHINSTANCE; 585} 586 587#endif /* LWIP_ARP && LWIP_IPV4 */ 588 589static const struct snmp_scalar_node ip_Forwarding = SNMP_SCALAR_CREATE_NODE(1, SNMP_NODE_INSTANCE_READ_WRITE, SNMP_ASN1_TYPE_INTEGER, ip_get_value, ip_set_test, ip_set_value); 590static const struct snmp_scalar_node ip_DefaultTTL = SNMP_SCALAR_CREATE_NODE(2, SNMP_NODE_INSTANCE_READ_WRITE, SNMP_ASN1_TYPE_INTEGER, ip_get_value, ip_set_test, ip_set_value); 591static const struct snmp_scalar_node ip_InReceives = SNMP_SCALAR_CREATE_NODE_READONLY(3, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 592static const struct snmp_scalar_node ip_InHdrErrors = SNMP_SCALAR_CREATE_NODE_READONLY(4, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 593static const struct snmp_scalar_node ip_InAddrErrors = SNMP_SCALAR_CREATE_NODE_READONLY(5, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 594static const struct snmp_scalar_node ip_ForwDatagrams = SNMP_SCALAR_CREATE_NODE_READONLY(6, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 595static const struct snmp_scalar_node ip_InUnknownProtos = SNMP_SCALAR_CREATE_NODE_READONLY(7, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 596static const struct snmp_scalar_node ip_InDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(8, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 597static const struct snmp_scalar_node ip_InDelivers = SNMP_SCALAR_CREATE_NODE_READONLY(9, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 598static const struct snmp_scalar_node ip_OutRequests = SNMP_SCALAR_CREATE_NODE_READONLY(10, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 599static const struct snmp_scalar_node ip_OutDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(11, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 600static const struct snmp_scalar_node ip_OutNoRoutes = SNMP_SCALAR_CREATE_NODE_READONLY(12, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 601static const struct snmp_scalar_node ip_ReasmTimeout = SNMP_SCALAR_CREATE_NODE_READONLY(13, SNMP_ASN1_TYPE_INTEGER, ip_get_value); 602static const struct snmp_scalar_node ip_ReasmReqds = SNMP_SCALAR_CREATE_NODE_READONLY(14, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 603static const struct snmp_scalar_node ip_ReasmOKs = SNMP_SCALAR_CREATE_NODE_READONLY(15, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 604static const struct snmp_scalar_node ip_ReasmFails = SNMP_SCALAR_CREATE_NODE_READONLY(16, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 605static const struct snmp_scalar_node ip_FragOKs = SNMP_SCALAR_CREATE_NODE_READONLY(17, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 606static const struct snmp_scalar_node ip_FragFails = SNMP_SCALAR_CREATE_NODE_READONLY(18, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 607static const struct snmp_scalar_node ip_FragCreates = SNMP_SCALAR_CREATE_NODE_READONLY(19, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 608static const struct snmp_scalar_node ip_RoutingDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(23, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 609 610static const struct snmp_table_simple_col_def ip_AddrTable_columns[] = { 611 { 1, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntAddr */ 612 { 2, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntIfIndex */ 613 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntNetMask */ 614 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntBcastAddr */ 615 { 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* ipAdEntReasmMaxSize */ 616}; 617 618static const struct snmp_table_simple_node ip_AddrTable = SNMP_TABLE_CREATE_SIMPLE(20, ip_AddrTable_columns, ip_AddrTable_get_cell_value, ip_AddrTable_get_next_cell_instance_and_value); 619 620static const struct snmp_table_simple_col_def ip_RouteTable_columns[] = { 621 { 1, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteDest */ 622 { 2, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteIfIndex */ 623 { 3, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric1 */ 624 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric2 */ 625 { 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric3 */ 626 { 6, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric4 */ 627 { 7, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteNextHop */ 628 { 8, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteType */ 629 { 9, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteProto */ 630 { 10, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteAge */ 631 { 11, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteMask */ 632 { 12, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric5 */ 633 { 13, SNMP_ASN1_TYPE_OBJECT_ID, SNMP_VARIANT_VALUE_TYPE_PTR } /* ipRouteInfo */ 634}; 635 636static const struct snmp_table_simple_node ip_RouteTable = SNMP_TABLE_CREATE_SIMPLE(21, ip_RouteTable_columns, ip_RouteTable_get_cell_value, ip_RouteTable_get_next_cell_instance_and_value); 637#endif /* LWIP_IPV4 */ 638 639#if LWIP_ARP && LWIP_IPV4 640static const struct snmp_table_simple_col_def ip_NetToMediaTable_columns[] = { 641 { 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipNetToMediaIfIndex */ 642 { 2, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_VARIANT_VALUE_TYPE_PTR }, /* ipNetToMediaPhysAddress */ 643 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipNetToMediaNetAddress */ 644 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* ipNetToMediaType */ 645}; 646 647static const struct snmp_table_simple_node ip_NetToMediaTable = SNMP_TABLE_CREATE_SIMPLE(22, ip_NetToMediaTable_columns, ip_NetToMediaTable_get_cell_value, ip_NetToMediaTable_get_next_cell_instance_and_value); 648#endif /* LWIP_ARP && LWIP_IPV4 */ 649 650#if LWIP_IPV4 651/* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */ 652CREATE_LWIP_SYNC_NODE( 1, ip_Forwarding) 653CREATE_LWIP_SYNC_NODE( 2, ip_DefaultTTL) 654CREATE_LWIP_SYNC_NODE( 3, ip_InReceives) 655CREATE_LWIP_SYNC_NODE( 4, ip_InHdrErrors) 656CREATE_LWIP_SYNC_NODE( 5, ip_InAddrErrors) 657CREATE_LWIP_SYNC_NODE( 6, ip_ForwDatagrams) 658CREATE_LWIP_SYNC_NODE( 7, ip_InUnknownProtos) 659CREATE_LWIP_SYNC_NODE( 8, ip_InDiscards) 660CREATE_LWIP_SYNC_NODE( 9, ip_InDelivers) 661CREATE_LWIP_SYNC_NODE(10, ip_OutRequests) 662CREATE_LWIP_SYNC_NODE(11, ip_OutDiscards) 663CREATE_LWIP_SYNC_NODE(12, ip_OutNoRoutes) 664CREATE_LWIP_SYNC_NODE(13, ip_ReasmTimeout) 665CREATE_LWIP_SYNC_NODE(14, ip_ReasmReqds) 666CREATE_LWIP_SYNC_NODE(15, ip_ReasmOKs) 667CREATE_LWIP_SYNC_NODE(15, ip_ReasmFails) 668CREATE_LWIP_SYNC_NODE(17, ip_FragOKs) 669CREATE_LWIP_SYNC_NODE(18, ip_FragFails) 670CREATE_LWIP_SYNC_NODE(19, ip_FragCreates) 671CREATE_LWIP_SYNC_NODE(20, ip_AddrTable) 672CREATE_LWIP_SYNC_NODE(21, ip_RouteTable) 673#if LWIP_ARP 674CREATE_LWIP_SYNC_NODE(22, ip_NetToMediaTable) 675#endif /* LWIP_ARP */ 676CREATE_LWIP_SYNC_NODE(23, ip_RoutingDiscards) 677 678static const struct snmp_node *const ip_nodes[] = { 679 &SYNC_NODE_NAME(ip_Forwarding).node.node, 680 &SYNC_NODE_NAME(ip_DefaultTTL).node.node, 681 &SYNC_NODE_NAME(ip_InReceives).node.node, 682 &SYNC_NODE_NAME(ip_InHdrErrors).node.node, 683 &SYNC_NODE_NAME(ip_InAddrErrors).node.node, 684 &SYNC_NODE_NAME(ip_ForwDatagrams).node.node, 685 &SYNC_NODE_NAME(ip_InUnknownProtos).node.node, 686 &SYNC_NODE_NAME(ip_InDiscards).node.node, 687 &SYNC_NODE_NAME(ip_InDelivers).node.node, 688 &SYNC_NODE_NAME(ip_OutRequests).node.node, 689 &SYNC_NODE_NAME(ip_OutDiscards).node.node, 690 &SYNC_NODE_NAME(ip_OutNoRoutes).node.node, 691 &SYNC_NODE_NAME(ip_ReasmTimeout).node.node, 692 &SYNC_NODE_NAME(ip_ReasmReqds).node.node, 693 &SYNC_NODE_NAME(ip_ReasmOKs).node.node, 694 &SYNC_NODE_NAME(ip_ReasmFails).node.node, 695 &SYNC_NODE_NAME(ip_FragOKs).node.node, 696 &SYNC_NODE_NAME(ip_FragFails).node.node, 697 &SYNC_NODE_NAME(ip_FragCreates).node.node, 698 &SYNC_NODE_NAME(ip_AddrTable).node.node, 699 &SYNC_NODE_NAME(ip_RouteTable).node.node, 700#if LWIP_ARP 701 &SYNC_NODE_NAME(ip_NetToMediaTable).node.node, 702#endif /* LWIP_ARP */ 703 &SYNC_NODE_NAME(ip_RoutingDiscards).node.node 704}; 705 706const struct snmp_tree_node snmp_mib2_ip_root = SNMP_CREATE_TREE_NODE(4, ip_nodes); 707#endif /* LWIP_IPV4 */ 708 709/* --- at .1.3.6.1.2.1.3 ----------------------------------------------------- */ 710 711#if LWIP_ARP && LWIP_IPV4 712/* at node table is a subset of ip_nettomedia table (same rows but less columns) */ 713static const struct snmp_table_simple_col_def at_Table_columns[] = { 714 { 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* atIfIndex */ 715 { 2, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_VARIANT_VALUE_TYPE_PTR }, /* atPhysAddress */ 716 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 } /* atNetAddress */ 717}; 718 719static const struct snmp_table_simple_node at_Table = SNMP_TABLE_CREATE_SIMPLE(1, at_Table_columns, ip_NetToMediaTable_get_cell_value, ip_NetToMediaTable_get_next_cell_instance_and_value); 720 721/* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */ 722CREATE_LWIP_SYNC_NODE(1, at_Table) 723 724static const struct snmp_node *const at_nodes[] = { 725 &SYNC_NODE_NAME(at_Table).node.node 726}; 727 728const struct snmp_tree_node snmp_mib2_at_root = SNMP_CREATE_TREE_NODE(3, at_nodes); 729#endif /* LWIP_ARP && LWIP_IPV4 */ 730 731#endif /* LWIP_SNMP && SNMP_LWIP_MIB2 */ 732