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 = netif_list; 266 while (netif != NULL) { 267 if (ip4_addr_cmp(&ip, netif_ip4_addr(netif))) { 268 /* fill in object properties */ 269 return ip_AddrTable_get_cell_value_core(netif, column, value, value_len); 270 } 271 272 netif = netif->next; 273 } 274 275 /* not found */ 276 return SNMP_ERR_NOSUCHINSTANCE; 277} 278 279static snmp_err_t 280ip_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) 281{ 282 struct netif *netif; 283 struct snmp_next_oid_state state; 284 u32_t result_temp[LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)]; 285 286 /* init struct to search next oid */ 287 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)); 288 289 /* iterate over all possible OIDs to find the next one */ 290 netif = netif_list; 291 while (netif != NULL) { 292 u32_t test_oid[LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges)]; 293 snmp_ip4_to_oid(netif_ip4_addr(netif), &test_oid[0]); 294 295 /* check generated OID: is it a candidate for the next one? */ 296 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_AddrTable_oid_ranges), netif); 297 298 netif = netif->next; 299 } 300 301 /* did we find a next one? */ 302 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 303 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 304 /* fill in object properties */ 305 return ip_AddrTable_get_cell_value_core((struct netif*)state.reference, column, value, value_len); 306 } 307 308 /* not found */ 309 return SNMP_ERR_NOSUCHINSTANCE; 310} 311 312/* --- ipRouteTable --- */ 313 314/* list of allowed value ranges for incoming OID */ 315static const struct snmp_oid_range ip_RouteTable_oid_ranges[] = { 316 { 0, 0xff }, /* IP A */ 317 { 0, 0xff }, /* IP B */ 318 { 0, 0xff }, /* IP C */ 319 { 0, 0xff }, /* IP D */ 320}; 321 322static snmp_err_t 323ip_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) 324{ 325 switch (*column) { 326 case 1: /* ipRouteDest */ 327 if (default_route) { 328 /* default rte has 0.0.0.0 dest */ 329 value->u32 = IP4_ADDR_ANY4->addr; 330 } else { 331 /* netifs have netaddress dest */ 332 ip4_addr_t tmp; 333 ip4_addr_get_network(&tmp, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 334 value->u32 = tmp.addr; 335 } 336 break; 337 case 2: /* ipRouteIfIndex */ 338 value->u32 = netif_to_num(netif); 339 break; 340 case 3: /* ipRouteMetric1 */ 341 if (default_route) { 342 value->s32 = 1; /* default */ 343 } else { 344 value->s32 = 0; /* normal */ 345 } 346 break; 347 case 4: /* ipRouteMetric2 */ 348 case 5: /* ipRouteMetric3 */ 349 case 6: /* ipRouteMetric4 */ 350 value->s32 = -1; /* none */ 351 break; 352 case 7: /* ipRouteNextHop */ 353 if (default_route) { 354 /* default rte: gateway */ 355 value->u32 = netif_ip4_gw(netif)->addr; 356 } else { 357 /* other rtes: netif ip_addr */ 358 value->u32 = netif_ip4_addr(netif)->addr; 359 } 360 break; 361 case 8: /* ipRouteType */ 362 if (default_route) { 363 /* default rte is indirect */ 364 value->u32 = 4; /* indirect */ 365 } else { 366 /* other rtes are direct */ 367 value->u32 = 3; /* direct */ 368 } 369 break; 370 case 9: /* ipRouteProto */ 371 /* locally defined routes */ 372 value->u32 = 2; /* local */ 373 break; 374 case 10: /* ipRouteAge */ 375 /* @todo (sysuptime - timestamp last change) / 100 */ 376 value->u32 = 0; 377 break; 378 case 11: /* ipRouteMask */ 379 if (default_route) { 380 /* default rte use 0.0.0.0 mask */ 381 value->u32 = IP4_ADDR_ANY4->addr; 382 } else { 383 /* other rtes use netmask */ 384 value->u32 = netif_ip4_netmask(netif)->addr; 385 } 386 break; 387 case 12: /* ipRouteMetric5 */ 388 value->s32 = -1; /* none */ 389 break; 390 case 13: /* ipRouteInfo */ 391 value->const_ptr = snmp_zero_dot_zero.id; 392 *value_len = snmp_zero_dot_zero.len * sizeof(u32_t); 393 break; 394 default: 395 return SNMP_ERR_NOSUCHINSTANCE; 396 } 397 398 return SNMP_ERR_NOERROR; 399} 400 401static snmp_err_t 402ip_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) 403{ 404 ip4_addr_t test_ip; 405 struct netif *netif; 406 407 /* check if incoming OID length and if values are in plausible range */ 408 if (!snmp_oid_in_range(row_oid, row_oid_len, ip_RouteTable_oid_ranges, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges))) { 409 return SNMP_ERR_NOSUCHINSTANCE; 410 } 411 412 /* get IP and port from incoming OID */ 413 snmp_oid_to_ip4(&row_oid[0], &test_ip); /* we know it succeeds because of oid_in_range check above */ 414 415 /* default route is on default netif */ 416 if (ip4_addr_isany_val(test_ip) && (netif_default != NULL)) { 417 /* fill in object properties */ 418 return ip_RouteTable_get_cell_value_core(netif_default, 1, column, value, value_len); 419 } 420 421 /* find netif with requested route */ 422 netif = netif_list; 423 while (netif != NULL) { 424 ip4_addr_t dst; 425 ip4_addr_get_network(&dst, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 426 427 if (ip4_addr_cmp(&dst, &test_ip)) { 428 /* fill in object properties */ 429 return ip_RouteTable_get_cell_value_core(netif, 0, column, value, value_len); 430 } 431 432 netif = netif->next; 433 } 434 435 /* not found */ 436 return SNMP_ERR_NOSUCHINSTANCE; 437} 438 439static snmp_err_t 440ip_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) 441{ 442 struct netif *netif; 443 struct snmp_next_oid_state state; 444 u32_t result_temp[LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)]; 445 u32_t test_oid[LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)]; 446 447 /* init struct to search next oid */ 448 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges)); 449 450 /* check default route */ 451 if (netif_default != NULL) { 452 snmp_ip4_to_oid(IP4_ADDR_ANY4, &test_oid[0]); 453 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges), netif_default); 454 } 455 456 /* iterate over all possible OIDs to find the next one */ 457 netif = netif_list; 458 while (netif != NULL) { 459 ip4_addr_t dst; 460 ip4_addr_get_network(&dst, netif_ip4_addr(netif), netif_ip4_netmask(netif)); 461 462 /* check generated OID: is it a candidate for the next one? */ 463 if (!ip4_addr_isany_val(dst)) { 464 snmp_ip4_to_oid(&dst, &test_oid[0]); 465 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_RouteTable_oid_ranges), netif); 466 } 467 468 netif = netif->next; 469 } 470 471 /* did we find a next one? */ 472 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 473 ip4_addr_t dst; 474 snmp_oid_to_ip4(&result_temp[0], &dst); 475 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 476 /* fill in object properties */ 477 return ip_RouteTable_get_cell_value_core((struct netif*)state.reference, ip4_addr_isany_val(dst), column, value, value_len); 478 } else { 479 /* not found */ 480 return SNMP_ERR_NOSUCHINSTANCE; 481 } 482} 483 484#if LWIP_ARP && LWIP_IPV4 485/* --- ipNetToMediaTable --- */ 486 487/* list of allowed value ranges for incoming OID */ 488static const struct snmp_oid_range ip_NetToMediaTable_oid_ranges[] = { 489 { 1, 0xff }, /* IfIndex */ 490 { 0, 0xff }, /* IP A */ 491 { 0, 0xff }, /* IP B */ 492 { 0, 0xff }, /* IP C */ 493 { 0, 0xff } /* IP D */ 494}; 495 496static snmp_err_t 497ip_NetToMediaTable_get_cell_value_core(u8_t arp_table_index, const u32_t* column, union snmp_variant_value* value, u32_t* value_len) 498{ 499 ip4_addr_t *ip; 500 struct netif *netif; 501 struct eth_addr *ethaddr; 502 503 etharp_get_entry(arp_table_index, &ip, &netif, ðaddr); 504 505 /* value */ 506 switch (*column) { 507 case 1: /* atIfIndex / ipNetToMediaIfIndex */ 508 value->u32 = netif_to_num(netif); 509 break; 510 case 2: /* atPhysAddress / ipNetToMediaPhysAddress */ 511 value->ptr = ethaddr; 512 *value_len = sizeof(*ethaddr); 513 break; 514 case 3: /* atNetAddress / ipNetToMediaNetAddress */ 515 value->u32 = ip->addr; 516 break; 517 case 4: /* ipNetToMediaType */ 518 value->u32 = 3; /* dynamic*/ 519 break; 520 default: 521 return SNMP_ERR_NOSUCHINSTANCE; 522 } 523 524 return SNMP_ERR_NOERROR; 525} 526 527static snmp_err_t 528ip_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) 529{ 530 ip4_addr_t ip_in; 531 u8_t netif_index; 532 u8_t i; 533 534 /* check if incoming OID length and if values are in plausible range */ 535 if (!snmp_oid_in_range(row_oid, row_oid_len, ip_NetToMediaTable_oid_ranges, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges))) { 536 return SNMP_ERR_NOSUCHINSTANCE; 537 } 538 539 /* get IP from incoming OID */ 540 netif_index = (u8_t)row_oid[0]; 541 snmp_oid_to_ip4(&row_oid[1], &ip_in); /* we know it succeeds because of oid_in_range check above */ 542 543 /* find requested entry */ 544 for (i=0; i<ARP_TABLE_SIZE; i++) { 545 ip4_addr_t *ip; 546 struct netif *netif; 547 struct eth_addr *ethaddr; 548 549 if (etharp_get_entry(i, &ip, &netif, ðaddr)) { 550 if ((netif_index == netif_to_num(netif)) && ip4_addr_cmp(&ip_in, ip)) { 551 /* fill in object properties */ 552 return ip_NetToMediaTable_get_cell_value_core(i, column, value, value_len); 553 } 554 } 555 } 556 557 /* not found */ 558 return SNMP_ERR_NOSUCHINSTANCE; 559} 560 561static snmp_err_t 562ip_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) 563{ 564 u8_t i; 565 struct snmp_next_oid_state state; 566 u32_t result_temp[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)]; 567 568 /* init struct to search next oid */ 569 snmp_next_oid_init(&state, row_oid->id, row_oid->len, result_temp, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)); 570 571 /* iterate over all possible OIDs to find the next one */ 572 for (i=0; i<ARP_TABLE_SIZE; i++) { 573 ip4_addr_t *ip; 574 struct netif *netif; 575 struct eth_addr *ethaddr; 576 577 if (etharp_get_entry(i, &ip, &netif, ðaddr)) { 578 u32_t test_oid[LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges)]; 579 580 test_oid[0] = netif_to_num(netif); 581 snmp_ip4_to_oid(ip, &test_oid[1]); 582 583 /* check generated OID: is it a candidate for the next one? */ 584 snmp_next_oid_check(&state, test_oid, LWIP_ARRAYSIZE(ip_NetToMediaTable_oid_ranges), LWIP_PTR_NUMERIC_CAST(void*, i)); 585 } 586 } 587 588 /* did we find a next one? */ 589 if (state.status == SNMP_NEXT_OID_STATUS_SUCCESS) { 590 snmp_oid_assign(row_oid, state.next_oid, state.next_oid_len); 591 /* fill in object properties */ 592 return ip_NetToMediaTable_get_cell_value_core(LWIP_PTR_NUMERIC_CAST(u8_t, state.reference), column, value, value_len); 593 } 594 595 /* not found */ 596 return SNMP_ERR_NOSUCHINSTANCE; 597} 598 599#endif /* LWIP_ARP && LWIP_IPV4 */ 600 601static 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); 602static 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); 603static const struct snmp_scalar_node ip_InReceives = SNMP_SCALAR_CREATE_NODE_READONLY(3, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 604static const struct snmp_scalar_node ip_InHdrErrors = SNMP_SCALAR_CREATE_NODE_READONLY(4, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 605static const struct snmp_scalar_node ip_InAddrErrors = SNMP_SCALAR_CREATE_NODE_READONLY(5, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 606static const struct snmp_scalar_node ip_ForwDatagrams = SNMP_SCALAR_CREATE_NODE_READONLY(6, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 607static const struct snmp_scalar_node ip_InUnknownProtos = SNMP_SCALAR_CREATE_NODE_READONLY(7, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 608static const struct snmp_scalar_node ip_InDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(8, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 609static const struct snmp_scalar_node ip_InDelivers = SNMP_SCALAR_CREATE_NODE_READONLY(9, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 610static const struct snmp_scalar_node ip_OutRequests = SNMP_SCALAR_CREATE_NODE_READONLY(10, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 611static const struct snmp_scalar_node ip_OutDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(11, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 612static const struct snmp_scalar_node ip_OutNoRoutes = SNMP_SCALAR_CREATE_NODE_READONLY(12, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 613static const struct snmp_scalar_node ip_ReasmTimeout = SNMP_SCALAR_CREATE_NODE_READONLY(13, SNMP_ASN1_TYPE_INTEGER, ip_get_value); 614static const struct snmp_scalar_node ip_ReasmReqds = SNMP_SCALAR_CREATE_NODE_READONLY(14, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 615static const struct snmp_scalar_node ip_ReasmOKs = SNMP_SCALAR_CREATE_NODE_READONLY(15, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 616static const struct snmp_scalar_node ip_ReasmFails = SNMP_SCALAR_CREATE_NODE_READONLY(16, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 617static const struct snmp_scalar_node ip_FragOKs = SNMP_SCALAR_CREATE_NODE_READONLY(17, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 618static const struct snmp_scalar_node ip_FragFails = SNMP_SCALAR_CREATE_NODE_READONLY(18, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 619static const struct snmp_scalar_node ip_FragCreates = SNMP_SCALAR_CREATE_NODE_READONLY(19, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 620static const struct snmp_scalar_node ip_RoutingDiscards = SNMP_SCALAR_CREATE_NODE_READONLY(23, SNMP_ASN1_TYPE_COUNTER, ip_get_value); 621 622static const struct snmp_table_simple_col_def ip_AddrTable_columns[] = { 623 { 1, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntAddr */ 624 { 2, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntIfIndex */ 625 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntNetMask */ 626 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipAdEntBcastAddr */ 627 { 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* ipAdEntReasmMaxSize */ 628}; 629 630static 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); 631 632static const struct snmp_table_simple_col_def ip_RouteTable_columns[] = { 633 { 1, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteDest */ 634 { 2, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteIfIndex */ 635 { 3, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric1 */ 636 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric2 */ 637 { 5, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric3 */ 638 { 6, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric4 */ 639 { 7, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteNextHop */ 640 { 8, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteType */ 641 { 9, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteProto */ 642 { 10, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteAge */ 643 { 11, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipRouteMask */ 644 { 12, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_S32 }, /* ipRouteMetric5 */ 645 { 13, SNMP_ASN1_TYPE_OBJECT_ID, SNMP_VARIANT_VALUE_TYPE_PTR } /* ipRouteInfo */ 646}; 647 648static 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); 649#endif /* LWIP_IPV4 */ 650 651#if LWIP_ARP && LWIP_IPV4 652static const struct snmp_table_simple_col_def ip_NetToMediaTable_columns[] = { 653 { 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipNetToMediaIfIndex */ 654 { 2, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_VARIANT_VALUE_TYPE_PTR }, /* ipNetToMediaPhysAddress */ 655 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 }, /* ipNetToMediaNetAddress */ 656 { 4, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 } /* ipNetToMediaType */ 657}; 658 659static 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); 660#endif /* LWIP_ARP && LWIP_IPV4 */ 661 662#if LWIP_IPV4 663/* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */ 664CREATE_LWIP_SYNC_NODE( 1, ip_Forwarding) 665CREATE_LWIP_SYNC_NODE( 2, ip_DefaultTTL) 666CREATE_LWIP_SYNC_NODE( 3, ip_InReceives) 667CREATE_LWIP_SYNC_NODE( 4, ip_InHdrErrors) 668CREATE_LWIP_SYNC_NODE( 5, ip_InAddrErrors) 669CREATE_LWIP_SYNC_NODE( 6, ip_ForwDatagrams) 670CREATE_LWIP_SYNC_NODE( 7, ip_InUnknownProtos) 671CREATE_LWIP_SYNC_NODE( 8, ip_InDiscards) 672CREATE_LWIP_SYNC_NODE( 9, ip_InDelivers) 673CREATE_LWIP_SYNC_NODE(10, ip_OutRequests) 674CREATE_LWIP_SYNC_NODE(11, ip_OutDiscards) 675CREATE_LWIP_SYNC_NODE(12, ip_OutNoRoutes) 676CREATE_LWIP_SYNC_NODE(13, ip_ReasmTimeout) 677CREATE_LWIP_SYNC_NODE(14, ip_ReasmReqds) 678CREATE_LWIP_SYNC_NODE(15, ip_ReasmOKs) 679CREATE_LWIP_SYNC_NODE(15, ip_ReasmFails) 680CREATE_LWIP_SYNC_NODE(17, ip_FragOKs) 681CREATE_LWIP_SYNC_NODE(18, ip_FragFails) 682CREATE_LWIP_SYNC_NODE(19, ip_FragCreates) 683CREATE_LWIP_SYNC_NODE(20, ip_AddrTable) 684CREATE_LWIP_SYNC_NODE(21, ip_RouteTable) 685#if LWIP_ARP 686CREATE_LWIP_SYNC_NODE(22, ip_NetToMediaTable) 687#endif /* LWIP_ARP */ 688CREATE_LWIP_SYNC_NODE(23, ip_RoutingDiscards) 689 690static const struct snmp_node* const ip_nodes[] = { 691 &SYNC_NODE_NAME(ip_Forwarding).node.node, 692 &SYNC_NODE_NAME(ip_DefaultTTL).node.node, 693 &SYNC_NODE_NAME(ip_InReceives).node.node, 694 &SYNC_NODE_NAME(ip_InHdrErrors).node.node, 695 &SYNC_NODE_NAME(ip_InAddrErrors).node.node, 696 &SYNC_NODE_NAME(ip_ForwDatagrams).node.node, 697 &SYNC_NODE_NAME(ip_InUnknownProtos).node.node, 698 &SYNC_NODE_NAME(ip_InDiscards).node.node, 699 &SYNC_NODE_NAME(ip_InDelivers).node.node, 700 &SYNC_NODE_NAME(ip_OutRequests).node.node, 701 &SYNC_NODE_NAME(ip_OutDiscards).node.node, 702 &SYNC_NODE_NAME(ip_OutNoRoutes).node.node, 703 &SYNC_NODE_NAME(ip_ReasmTimeout).node.node, 704 &SYNC_NODE_NAME(ip_ReasmReqds).node.node, 705 &SYNC_NODE_NAME(ip_ReasmOKs).node.node, 706 &SYNC_NODE_NAME(ip_ReasmFails).node.node, 707 &SYNC_NODE_NAME(ip_FragOKs).node.node, 708 &SYNC_NODE_NAME(ip_FragFails).node.node, 709 &SYNC_NODE_NAME(ip_FragCreates).node.node, 710 &SYNC_NODE_NAME(ip_AddrTable).node.node, 711 &SYNC_NODE_NAME(ip_RouteTable).node.node, 712#if LWIP_ARP 713 &SYNC_NODE_NAME(ip_NetToMediaTable).node.node, 714#endif /* LWIP_ARP */ 715 &SYNC_NODE_NAME(ip_RoutingDiscards).node.node 716}; 717 718const struct snmp_tree_node snmp_mib2_ip_root = SNMP_CREATE_TREE_NODE(4, ip_nodes); 719#endif /* LWIP_IPV4 */ 720 721/* --- at .1.3.6.1.2.1.3 ----------------------------------------------------- */ 722 723#if LWIP_ARP && LWIP_IPV4 724/* at node table is a subset of ip_nettomedia table (same rows but less columns) */ 725static const struct snmp_table_simple_col_def at_Table_columns[] = { 726 { 1, SNMP_ASN1_TYPE_INTEGER, SNMP_VARIANT_VALUE_TYPE_U32 }, /* atIfIndex */ 727 { 2, SNMP_ASN1_TYPE_OCTET_STRING, SNMP_VARIANT_VALUE_TYPE_PTR }, /* atPhysAddress */ 728 { 3, SNMP_ASN1_TYPE_IPADDR, SNMP_VARIANT_VALUE_TYPE_U32 } /* atNetAddress */ 729}; 730 731static 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); 732 733/* the following nodes access variables in LWIP stack from SNMP worker thread and must therefore be synced to LWIP (TCPIP) thread */ 734CREATE_LWIP_SYNC_NODE(1, at_Table) 735 736static const struct snmp_node* const at_nodes[] = { 737 &SYNC_NODE_NAME(at_Table).node.node 738}; 739 740const struct snmp_tree_node snmp_mib2_at_root = SNMP_CREATE_TREE_NODE(3, at_nodes); 741#endif /* LWIP_ARP && LWIP_IPV4 */ 742 743#endif /* LWIP_SNMP && SNMP_LWIP_MIB2 */ 744