Annotation of embedaddon/quagga/bgpd/bgp_snmp.c, revision 1.1
1.1 ! misho 1: /* BGP4 SNMP support
! 2: Copyright (C) 1999, 2000 Kunihiro Ishiguro
! 3:
! 4: This file is part of GNU Zebra.
! 5:
! 6: GNU Zebra is free software; you can redistribute it and/or modify it
! 7: under the terms of the GNU General Public License as published by the
! 8: Free Software Foundation; either version 2, or (at your option) any
! 9: later version.
! 10:
! 11: GNU Zebra is distributed in the hope that it will be useful, but
! 12: WITHOUT ANY WARRANTY; without even the implied warranty of
! 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
! 14: General Public License for more details.
! 15:
! 16: You should have received a copy of the GNU General Public License
! 17: along with GNU Zebra; see the file COPYING. If not, write to the Free
! 18: Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
! 19: 02111-1307, USA. */
! 20:
! 21: #include <zebra.h>
! 22:
! 23: #ifdef HAVE_SNMP
! 24: #ifdef HAVE_NETSNMP
! 25: #include <net-snmp/net-snmp-config.h>
! 26: #include <net-snmp/net-snmp-includes.h>
! 27: #else
! 28: #include <asn1.h>
! 29: #include <snmp.h>
! 30: #include <snmp_impl.h>
! 31: #endif
! 32:
! 33: #include "if.h"
! 34: #include "log.h"
! 35: #include "prefix.h"
! 36: #include "command.h"
! 37: #include "thread.h"
! 38: #include "smux.h"
! 39:
! 40: #include "bgpd/bgpd.h"
! 41: #include "bgpd/bgp_table.h"
! 42: #include "bgpd/bgp_aspath.h"
! 43: #include "bgpd/bgp_attr.h"
! 44: #include "bgpd/bgp_route.h"
! 45: #include "bgpd/bgp_fsm.h"
! 46: #include "bgpd/bgp_snmp.h"
! 47:
! 48: /* BGP4-MIB described in RFC1657. */
! 49: #define BGP4MIB 1,3,6,1,2,1,15
! 50:
! 51: /* BGP TRAP. */
! 52: #define BGPESTABLISHED 1
! 53: #define BGPBACKWARDTRANSITION 2
! 54:
! 55: /* BGP MIB bgpVersion. */
! 56: #define BGPVERSION 0
! 57:
! 58: /* BGP MIB bgpLocalAs. */
! 59: #define BGPLOCALAS 0
! 60:
! 61: /* BGP MIB bgpPeerTable. */
! 62: #define BGPPEERIDENTIFIER 1
! 63: #define BGPPEERSTATE 2
! 64: #define BGPPEERADMINSTATUS 3
! 65: #define BGPPEERNEGOTIATEDVERSION 4
! 66: #define BGPPEERLOCALADDR 5
! 67: #define BGPPEERLOCALPORT 6
! 68: #define BGPPEERREMOTEADDR 7
! 69: #define BGPPEERREMOTEPORT 8
! 70: #define BGPPEERREMOTEAS 9
! 71: #define BGPPEERINUPDATES 10
! 72: #define BGPPEEROUTUPDATES 11
! 73: #define BGPPEERINTOTALMESSAGES 12
! 74: #define BGPPEEROUTTOTALMESSAGES 13
! 75: #define BGPPEERLASTERROR 14
! 76: #define BGPPEERFSMESTABLISHEDTRANSITIONS 15
! 77: #define BGPPEERFSMESTABLISHEDTIME 16
! 78: #define BGPPEERCONNECTRETRYINTERVAL 17
! 79: #define BGPPEERHOLDTIME 18
! 80: #define BGPPEERKEEPALIVE 19
! 81: #define BGPPEERHOLDTIMECONFIGURED 20
! 82: #define BGPPEERKEEPALIVECONFIGURED 21
! 83: #define BGPPEERMINASORIGINATIONINTERVAL 22
! 84: #define BGPPEERMINROUTEADVERTISEMENTINTERVAL 23
! 85: #define BGPPEERINUPDATEELAPSEDTIME 24
! 86:
! 87: /* BGP MIB bgpIdentifier. */
! 88: #define BGPIDENTIFIER 0
! 89:
! 90: /* BGP MIB bgpRcvdPathAttrTable */
! 91: #define BGPPATHATTRPEER 1
! 92: #define BGPPATHATTRDESTNETWORK 2
! 93: #define BGPPATHATTRORIGIN 3
! 94: #define BGPPATHATTRASPATH 4
! 95: #define BGPPATHATTRNEXTHOP 5
! 96: #define BGPPATHATTRINTERASMETRIC 6
! 97:
! 98: /* BGP MIB bgp4PathAttrTable. */
! 99: #define BGP4PATHATTRPEER 1
! 100: #define BGP4PATHATTRIPADDRPREFIXLEN 2
! 101: #define BGP4PATHATTRIPADDRPREFIX 3
! 102: #define BGP4PATHATTRORIGIN 4
! 103: #define BGP4PATHATTRASPATHSEGMENT 5
! 104: #define BGP4PATHATTRNEXTHOP 6
! 105: #define BGP4PATHATTRMULTIEXITDISC 7
! 106: #define BGP4PATHATTRLOCALPREF 8
! 107: #define BGP4PATHATTRATOMICAGGREGATE 9
! 108: #define BGP4PATHATTRAGGREGATORAS 10
! 109: #define BGP4PATHATTRAGGREGATORADDR 11
! 110: #define BGP4PATHATTRCALCLOCALPREF 12
! 111: #define BGP4PATHATTRBEST 13
! 112: #define BGP4PATHATTRUNKNOWN 14
! 113:
! 114: /* SNMP value hack. */
! 115: #define INTEGER ASN_INTEGER
! 116: #define INTEGER32 ASN_INTEGER
! 117: #define COUNTER32 ASN_COUNTER
! 118: #define OCTET_STRING ASN_OCTET_STR
! 119: #define IPADDRESS ASN_IPADDRESS
! 120: #define GAUGE32 ASN_UNSIGNED
! 121:
! 122: /* Declare static local variables for convenience. */
! 123: SNMP_LOCAL_VARIABLES
! 124:
! 125: /* BGP-MIB instances. */
! 126: oid bgp_oid [] = { BGP4MIB };
! 127:
! 128: /* IP address 0.0.0.0. */
! 129: static struct in_addr bgp_empty_addr = {0};
! 130:
! 131: /* Hook functions. */
! 132: static u_char *bgpVersion (struct variable *, oid [], size_t *, int,
! 133: size_t *, WriteMethod **);
! 134: static u_char *bgpLocalAs (struct variable *, oid [], size_t *,
! 135: int, size_t *, WriteMethod **);
! 136: static u_char *bgpPeerTable (struct variable *, oid [], size_t *,
! 137: int, size_t *, WriteMethod **);
! 138: static u_char *bgpRcvdPathAttrTable (struct variable *, oid [], size_t *,
! 139: int, size_t *, WriteMethod **);
! 140: static u_char *bgpIdentifier (struct variable *, oid [], size_t *,
! 141: int, size_t *, WriteMethod **);
! 142: static u_char *bgp4PathAttrTable (struct variable *, oid [], size_t *,
! 143: int, size_t *, WriteMethod **);
! 144: /* static u_char *bgpTraps (); */
! 145:
! 146: struct variable bgp_variables[] =
! 147: {
! 148: /* BGP version. */
! 149: {BGPVERSION, OCTET_STRING, RONLY, bgpVersion,
! 150: 1, {1}},
! 151: /* BGP local AS. */
! 152: {BGPLOCALAS, INTEGER, RONLY, bgpLocalAs,
! 153: 1, {2}},
! 154: /* BGP peer table. */
! 155: {BGPPEERIDENTIFIER, IPADDRESS, RONLY, bgpPeerTable,
! 156: 3, {3, 1, 1}},
! 157: {BGPPEERSTATE, INTEGER, RONLY, bgpPeerTable,
! 158: 3, {3, 1, 2}},
! 159: {BGPPEERADMINSTATUS, INTEGER, RWRITE, bgpPeerTable,
! 160: 3, {3, 1, 3}},
! 161: {BGPPEERNEGOTIATEDVERSION, INTEGER32, RONLY, bgpPeerTable,
! 162: 3, {3, 1, 4}},
! 163: {BGPPEERLOCALADDR, IPADDRESS, RONLY, bgpPeerTable,
! 164: 3, {3, 1, 5}},
! 165: {BGPPEERLOCALPORT, INTEGER, RONLY, bgpPeerTable,
! 166: 3, {3, 1, 6}},
! 167: {BGPPEERREMOTEADDR, IPADDRESS, RONLY, bgpPeerTable,
! 168: 3, {3, 1, 7}},
! 169: {BGPPEERREMOTEPORT, INTEGER, RONLY, bgpPeerTable,
! 170: 3, {3, 1, 8}},
! 171: {BGPPEERREMOTEAS, INTEGER, RONLY, bgpPeerTable,
! 172: 3, {3, 1, 9}},
! 173: {BGPPEERINUPDATES, COUNTER32, RONLY, bgpPeerTable,
! 174: 3, {3, 1, 10}},
! 175: {BGPPEEROUTUPDATES, COUNTER32, RONLY, bgpPeerTable,
! 176: 3, {3, 1, 11}},
! 177: {BGPPEERINTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable,
! 178: 3, {3, 1, 12}},
! 179: {BGPPEEROUTTOTALMESSAGES, COUNTER32, RONLY, bgpPeerTable,
! 180: 3, {3, 1, 13}},
! 181: {BGPPEERLASTERROR, OCTET_STRING, RONLY, bgpPeerTable,
! 182: 3, {3, 1, 14}},
! 183: {BGPPEERFSMESTABLISHEDTRANSITIONS, COUNTER32, RONLY, bgpPeerTable,
! 184: 3, {3, 1, 15}},
! 185: {BGPPEERFSMESTABLISHEDTIME, GAUGE32, RONLY, bgpPeerTable,
! 186: 3, {3, 1, 16}},
! 187: {BGPPEERCONNECTRETRYINTERVAL, INTEGER, RWRITE, bgpPeerTable,
! 188: 3, {3, 1, 17}},
! 189: {BGPPEERHOLDTIME, INTEGER, RONLY, bgpPeerTable,
! 190: 3, {3, 1, 18}},
! 191: {BGPPEERKEEPALIVE, INTEGER, RONLY, bgpPeerTable,
! 192: 3, {3, 1, 19}},
! 193: {BGPPEERHOLDTIMECONFIGURED, INTEGER, RWRITE, bgpPeerTable,
! 194: 3, {3, 1, 20}},
! 195: {BGPPEERKEEPALIVECONFIGURED, INTEGER, RWRITE, bgpPeerTable,
! 196: 3, {3, 1, 21}},
! 197: {BGPPEERMINASORIGINATIONINTERVAL, INTEGER, RWRITE, bgpPeerTable,
! 198: 3, {3, 1, 22}},
! 199: {BGPPEERMINROUTEADVERTISEMENTINTERVAL, INTEGER, RWRITE, bgpPeerTable,
! 200: 3, {3, 1, 23}},
! 201: {BGPPEERINUPDATEELAPSEDTIME, GAUGE32, RONLY, bgpPeerTable,
! 202: 3, {3, 1, 24}},
! 203: /* BGP identifier. */
! 204: {BGPIDENTIFIER, IPADDRESS, RONLY, bgpIdentifier,
! 205: 1, {4}},
! 206: /* BGP received path attribute table. */
! 207: {BGPPATHATTRPEER, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
! 208: 3, {5, 1, 1}},
! 209: {BGPPATHATTRDESTNETWORK, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
! 210: 3, {5, 1, 2}},
! 211: {BGPPATHATTRORIGIN, INTEGER, RONLY, bgpRcvdPathAttrTable,
! 212: 3, {5, 1, 3}},
! 213: {BGPPATHATTRASPATH, OCTET_STRING, RONLY, bgpRcvdPathAttrTable,
! 214: 3, {5, 1, 4}},
! 215: {BGPPATHATTRNEXTHOP, IPADDRESS, RONLY, bgpRcvdPathAttrTable,
! 216: 3, {5, 1, 5}},
! 217: {BGPPATHATTRINTERASMETRIC, INTEGER32, RONLY, bgpRcvdPathAttrTable,
! 218: 3, {5, 1, 6}},
! 219: /* BGP-4 received path attribute table. */
! 220: {BGP4PATHATTRPEER, IPADDRESS, RONLY, bgp4PathAttrTable,
! 221: 3, {6, 1, 1}},
! 222: {BGP4PATHATTRIPADDRPREFIXLEN, INTEGER, RONLY, bgp4PathAttrTable,
! 223: 3, {6, 1, 2}},
! 224: {BGP4PATHATTRIPADDRPREFIX, IPADDRESS, RONLY, bgp4PathAttrTable,
! 225: 3, {6, 1, 3}},
! 226: {BGP4PATHATTRORIGIN, INTEGER, RONLY, bgp4PathAttrTable,
! 227: 3, {6, 1, 4}},
! 228: {BGP4PATHATTRASPATHSEGMENT, OCTET_STRING, RONLY, bgp4PathAttrTable,
! 229: 3, {6, 1, 5}},
! 230: {BGP4PATHATTRNEXTHOP, IPADDRESS, RONLY, bgp4PathAttrTable,
! 231: 3, {6, 1, 6}},
! 232: {BGP4PATHATTRMULTIEXITDISC, INTEGER, RONLY, bgp4PathAttrTable,
! 233: 3, {6, 1, 7}},
! 234: {BGP4PATHATTRLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable,
! 235: 3, {6, 1, 8}},
! 236: {BGP4PATHATTRATOMICAGGREGATE, INTEGER, RONLY, bgp4PathAttrTable,
! 237: 3, {6, 1, 9}},
! 238: {BGP4PATHATTRAGGREGATORAS, INTEGER, RONLY, bgp4PathAttrTable,
! 239: 3, {6, 1, 10}},
! 240: {BGP4PATHATTRAGGREGATORADDR, IPADDRESS, RONLY, bgp4PathAttrTable,
! 241: 3, {6, 1, 11}},
! 242: {BGP4PATHATTRCALCLOCALPREF, INTEGER, RONLY, bgp4PathAttrTable,
! 243: 3, {6, 1, 12}},
! 244: {BGP4PATHATTRBEST, INTEGER, RONLY, bgp4PathAttrTable,
! 245: 3, {6, 1, 13}},
! 246: {BGP4PATHATTRUNKNOWN, OCTET_STRING, RONLY, bgp4PathAttrTable,
! 247: 3, {6, 1, 14}},
! 248: };
! 249:
! 250:
! 251: static u_char *
! 252: bgpVersion (struct variable *v, oid name[], size_t *length, int exact,
! 253: size_t *var_len, WriteMethod **write_method)
! 254: {
! 255: static u_char version;
! 256:
! 257: if (smux_header_generic(v, name, length, exact, var_len, write_method)
! 258: == MATCH_FAILED)
! 259: return NULL;
! 260:
! 261: /* Retrun BGP version. Zebra bgpd only support version 4. */
! 262: version = (0x80 >> (BGP_VERSION_4 - 1));
! 263:
! 264: /* Return octet string length 1. */
! 265: *var_len = 1;
! 266: return (u_char *)&version;
! 267: }
! 268:
! 269: static u_char *
! 270: bgpLocalAs (struct variable *v, oid name[], size_t *length,
! 271: int exact, size_t *var_len, WriteMethod **write_method)
! 272: {
! 273: struct bgp *bgp;
! 274:
! 275: if (smux_header_generic(v, name, length, exact, var_len, write_method)
! 276: == MATCH_FAILED)
! 277: return NULL;
! 278:
! 279: /* Get BGP structure. */
! 280: bgp = bgp_get_default ();
! 281: if (! bgp)
! 282: return NULL;
! 283:
! 284: return SNMP_INTEGER (bgp->as);
! 285: }
! 286:
! 287: static struct peer *
! 288: peer_lookup_addr_ipv4 (struct in_addr *src)
! 289: {
! 290: struct bgp *bgp;
! 291: struct peer *peer;
! 292: struct listnode *node;
! 293: struct in_addr addr;
! 294: int ret;
! 295:
! 296: bgp = bgp_get_default ();
! 297: if (! bgp)
! 298: return NULL;
! 299:
! 300: for (ALL_LIST_ELEMENTS_RO (bgp->peer, node, peer))
! 301: {
! 302: ret = inet_pton (AF_INET, peer->host, &addr);
! 303: if (ret > 0)
! 304: {
! 305: if (IPV4_ADDR_SAME (&addr, src))
! 306: return peer;
! 307: }
! 308: }
! 309: return NULL;
! 310: }
! 311:
! 312: static struct peer *
! 313: bgp_peer_lookup_next (struct in_addr *src)
! 314: {
! 315: struct bgp *bgp;
! 316: struct peer *peer;
! 317: struct listnode *node;
! 318: struct in_addr *p;
! 319: union sockunion su;
! 320: int ret;
! 321:
! 322: memset (&su, 0, sizeof (union sockunion));
! 323:
! 324: bgp = bgp_get_default ();
! 325: if (! bgp)
! 326: return NULL;
! 327:
! 328: for (ALL_LIST_ELEMENTS_RO (bgp->peer, node, peer))
! 329: {
! 330: ret = inet_pton (AF_INET, peer->host, &su.sin.sin_addr);
! 331: if (ret > 0)
! 332: {
! 333: p = &su.sin.sin_addr;
! 334:
! 335: if (ntohl (p->s_addr) > ntohl (src->s_addr))
! 336: {
! 337: src->s_addr = p->s_addr;
! 338: return peer;
! 339: }
! 340: }
! 341: }
! 342: return NULL;
! 343: }
! 344:
! 345: static struct peer *
! 346: bgpPeerTable_lookup (struct variable *v, oid name[], size_t *length,
! 347: struct in_addr *addr, int exact)
! 348: {
! 349: struct peer *peer = NULL;
! 350: int len;
! 351:
! 352: if (exact)
! 353: {
! 354: /* Check the length. */
! 355: if (*length - v->namelen != sizeof (struct in_addr))
! 356: return NULL;
! 357:
! 358: oid2in_addr (name + v->namelen, IN_ADDR_SIZE, addr);
! 359:
! 360: peer = peer_lookup_addr_ipv4 (addr);
! 361: return peer;
! 362: }
! 363: else
! 364: {
! 365: len = *length - v->namelen;
! 366: if (len > 4) len = 4;
! 367:
! 368: oid2in_addr (name + v->namelen, len, addr);
! 369:
! 370: peer = bgp_peer_lookup_next (addr);
! 371:
! 372: if (peer == NULL)
! 373: return NULL;
! 374:
! 375: oid_copy_addr (name + v->namelen, addr, sizeof (struct in_addr));
! 376: *length = sizeof (struct in_addr) + v->namelen;
! 377:
! 378: return peer;
! 379: }
! 380: return NULL;
! 381: }
! 382:
! 383: /* BGP write methods. */
! 384: static int
! 385: write_bgpPeerTable (int action, u_char *var_val,
! 386: u_char var_val_type, size_t var_val_len,
! 387: u_char *statP, oid *name, size_t length,
! 388: struct variable *v)
! 389: {
! 390: struct in_addr addr;
! 391: struct peer *peer;
! 392: long intval;
! 393: size_t bigsize = SNMP_MAX_LEN;
! 394:
! 395: if (var_val_type != ASN_INTEGER)
! 396: {
! 397: return SNMP_ERR_WRONGTYPE;
! 398: }
! 399: if (var_val_len != sizeof (long))
! 400: {
! 401: return SNMP_ERR_WRONGLENGTH;
! 402: }
! 403:
! 404: if (! asn_parse_int(var_val, &bigsize, &var_val_type,
! 405: &intval, sizeof(long)))
! 406: {
! 407: return SNMP_ERR_WRONGENCODING;
! 408: }
! 409:
! 410: memset (&addr, 0, sizeof (struct in_addr));
! 411:
! 412: peer = bgpPeerTable_lookup (v, name, &length, &addr, 1);
! 413: if (! peer)
! 414: return SNMP_ERR_NOSUCHNAME;
! 415:
! 416: printf ("val: %ld\n", intval);
! 417:
! 418: switch (v->magic)
! 419: {
! 420: case BGPPEERADMINSTATUS:
! 421: #define BGP_PeerAdmin_stop 1
! 422: #define BGP_PeerAdmin_start 2
! 423: /* When the peer is established, */
! 424: if (intval == BGP_PeerAdmin_stop)
! 425: BGP_EVENT_ADD (peer, BGP_Stop);
! 426: else if (intval == BGP_PeerAdmin_start)
! 427: ; /* Do nothing. */
! 428: else
! 429: return SNMP_ERR_NOSUCHNAME;
! 430: break;
! 431: case BGPPEERCONNECTRETRYINTERVAL:
! 432: SET_FLAG (peer->config, PEER_CONFIG_CONNECT);
! 433: peer->connect = intval;
! 434: peer->v_connect = intval;
! 435: break;
! 436: case BGPPEERHOLDTIMECONFIGURED:
! 437: SET_FLAG (peer->config, PEER_CONFIG_TIMER);
! 438: peer->holdtime = intval;
! 439: peer->v_holdtime = intval;
! 440: break;
! 441: case BGPPEERKEEPALIVECONFIGURED:
! 442: SET_FLAG (peer->config, PEER_CONFIG_TIMER);
! 443: peer->keepalive = intval;
! 444: peer->v_keepalive = intval;
! 445: break;
! 446: case BGPPEERMINASORIGINATIONINTERVAL:
! 447: peer->v_asorig = intval;
! 448: break;
! 449: case BGPPEERMINROUTEADVERTISEMENTINTERVAL:
! 450: peer->v_routeadv = intval;
! 451: break;
! 452: }
! 453: return SNMP_ERR_NOERROR;
! 454: }
! 455:
! 456: static u_char *
! 457: bgpPeerTable (struct variable *v, oid name[], size_t *length,
! 458: int exact, size_t *var_len, WriteMethod **write_method)
! 459: {
! 460: static struct in_addr addr;
! 461: struct peer *peer;
! 462:
! 463: *write_method = NULL;
! 464: memset (&addr, 0, sizeof (struct in_addr));
! 465:
! 466: peer = bgpPeerTable_lookup (v, name, length, &addr, exact);
! 467: if (! peer)
! 468: return NULL;
! 469:
! 470: switch (v->magic)
! 471: {
! 472: case BGPPEERIDENTIFIER:
! 473: return SNMP_IPADDRESS (peer->remote_id);
! 474: break;
! 475: case BGPPEERSTATE:
! 476: return SNMP_INTEGER (peer->status);
! 477: break;
! 478: case BGPPEERADMINSTATUS:
! 479: *write_method = write_bgpPeerTable;
! 480: #define BGP_PeerAdmin_stop 1
! 481: #define BGP_PeerAdmin_start 2
! 482: if (CHECK_FLAG (peer->flags, PEER_FLAG_SHUTDOWN))
! 483: return SNMP_INTEGER (BGP_PeerAdmin_stop);
! 484: else
! 485: return SNMP_INTEGER (BGP_PeerAdmin_start);
! 486: break;
! 487: case BGPPEERNEGOTIATEDVERSION:
! 488: return SNMP_INTEGER (BGP_VERSION_4);
! 489: break;
! 490: case BGPPEERLOCALADDR:
! 491: if (peer->su_local)
! 492: return SNMP_IPADDRESS (peer->su_local->sin.sin_addr);
! 493: else
! 494: return SNMP_IPADDRESS (bgp_empty_addr);
! 495: break;
! 496: case BGPPEERLOCALPORT:
! 497: if (peer->su_local)
! 498: return SNMP_INTEGER (ntohs (peer->su_local->sin.sin_port));
! 499: else
! 500: return SNMP_INTEGER (0);
! 501: break;
! 502: case BGPPEERREMOTEADDR:
! 503: if (peer->su_remote)
! 504: return SNMP_IPADDRESS (peer->su_remote->sin.sin_addr);
! 505: else
! 506: return SNMP_IPADDRESS (bgp_empty_addr);
! 507: break;
! 508: case BGPPEERREMOTEPORT:
! 509: if (peer->su_remote)
! 510: return SNMP_INTEGER (ntohs (peer->su_remote->sin.sin_port));
! 511: else
! 512: return SNMP_INTEGER (0);
! 513: break;
! 514: case BGPPEERREMOTEAS:
! 515: return SNMP_INTEGER (peer->as);
! 516: break;
! 517: case BGPPEERINUPDATES:
! 518: return SNMP_INTEGER (peer->update_in);
! 519: break;
! 520: case BGPPEEROUTUPDATES:
! 521: return SNMP_INTEGER (peer->update_out);
! 522: break;
! 523: case BGPPEERINTOTALMESSAGES:
! 524: return SNMP_INTEGER (peer->open_in + peer->update_in
! 525: + peer->keepalive_in + peer->notify_in
! 526: + peer->refresh_in + peer->dynamic_cap_in);
! 527: break;
! 528: case BGPPEEROUTTOTALMESSAGES:
! 529: return SNMP_INTEGER (peer->open_out + peer->update_out
! 530: + peer->keepalive_out + peer->notify_out
! 531: + peer->refresh_out + peer->dynamic_cap_out);
! 532: break;
! 533: case BGPPEERLASTERROR:
! 534: {
! 535: static u_char lasterror[2];
! 536: lasterror[0] = peer->notify.code;
! 537: lasterror[1] = peer->notify.subcode;
! 538: *var_len = 2;
! 539: return (u_char *)&lasterror;
! 540: }
! 541: break;
! 542: case BGPPEERFSMESTABLISHEDTRANSITIONS:
! 543: return SNMP_INTEGER (peer->established);
! 544: break;
! 545: case BGPPEERFSMESTABLISHEDTIME:
! 546: if (peer->uptime == 0)
! 547: return SNMP_INTEGER (0);
! 548: else
! 549: return SNMP_INTEGER (bgp_clock () - peer->uptime);
! 550: break;
! 551: case BGPPEERCONNECTRETRYINTERVAL:
! 552: *write_method = write_bgpPeerTable;
! 553: return SNMP_INTEGER (peer->v_connect);
! 554: break;
! 555: case BGPPEERHOLDTIME:
! 556: return SNMP_INTEGER (peer->v_holdtime);
! 557: break;
! 558: case BGPPEERKEEPALIVE:
! 559: return SNMP_INTEGER (peer->v_keepalive);
! 560: break;
! 561: case BGPPEERHOLDTIMECONFIGURED:
! 562: *write_method = write_bgpPeerTable;
! 563: if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
! 564: return SNMP_INTEGER (peer->holdtime);
! 565: else
! 566: return SNMP_INTEGER (peer->v_holdtime);
! 567: break;
! 568: case BGPPEERKEEPALIVECONFIGURED:
! 569: *write_method = write_bgpPeerTable;
! 570: if (CHECK_FLAG (peer->config, PEER_CONFIG_TIMER))
! 571: return SNMP_INTEGER (peer->keepalive);
! 572: else
! 573: return SNMP_INTEGER (peer->v_keepalive);
! 574: break;
! 575: case BGPPEERMINASORIGINATIONINTERVAL:
! 576: *write_method = write_bgpPeerTable;
! 577: return SNMP_INTEGER (peer->v_asorig);
! 578: break;
! 579: case BGPPEERMINROUTEADVERTISEMENTINTERVAL:
! 580: *write_method = write_bgpPeerTable;
! 581: return SNMP_INTEGER (peer->v_routeadv);
! 582: break;
! 583: case BGPPEERINUPDATEELAPSEDTIME:
! 584: if (peer->update_time == 0)
! 585: return SNMP_INTEGER (0);
! 586: else
! 587: return SNMP_INTEGER (bgp_clock () - peer->update_time);
! 588: break;
! 589: default:
! 590: return NULL;
! 591: break;
! 592: }
! 593: return NULL;
! 594: }
! 595:
! 596: static u_char *
! 597: bgpIdentifier (struct variable *v, oid name[], size_t *length,
! 598: int exact, size_t *var_len, WriteMethod **write_method)
! 599: {
! 600: struct bgp *bgp;
! 601:
! 602: if (smux_header_generic(v, name, length, exact, var_len, write_method)
! 603: == MATCH_FAILED)
! 604: return NULL;
! 605:
! 606: bgp = bgp_get_default ();
! 607: if (!bgp)
! 608: return NULL;
! 609:
! 610: return SNMP_IPADDRESS (bgp->router_id);
! 611: }
! 612:
! 613: static u_char *
! 614: bgpRcvdPathAttrTable (struct variable *v, oid name[], size_t *length,
! 615: int exact, size_t *var_len, WriteMethod **write_method)
! 616: {
! 617: /* Received Path Attribute Table. This table contains, one entry
! 618: per path to a network, path attributes received from all peers
! 619: running BGP version 3 or less. This table is obsolete, having
! 620: been replaced in functionality with the bgp4PathAttrTable. */
! 621: return NULL;
! 622: }
! 623:
! 624: static struct bgp_info *
! 625: bgp4PathAttrLookup (struct variable *v, oid name[], size_t *length,
! 626: struct bgp *bgp, struct prefix_ipv4 *addr, int exact)
! 627: {
! 628: oid *offset;
! 629: int offsetlen;
! 630: struct bgp_info *binfo;
! 631: struct bgp_info *min;
! 632: struct bgp_node *rn;
! 633: union sockunion su;
! 634: unsigned int len;
! 635: struct in_addr paddr;
! 636:
! 637: #define BGP_PATHATTR_ENTRY_OFFSET \
! 638: (IN_ADDR_SIZE + 1 + IN_ADDR_SIZE)
! 639:
! 640: if (exact)
! 641: {
! 642: if (*length - v->namelen != BGP_PATHATTR_ENTRY_OFFSET)
! 643: return NULL;
! 644:
! 645: /* Set OID offset for prefix. */
! 646: offset = name + v->namelen;
! 647: oid2in_addr (offset, IN_ADDR_SIZE, &addr->prefix);
! 648: offset += IN_ADDR_SIZE;
! 649:
! 650: /* Prefix length. */
! 651: addr->prefixlen = *offset;
! 652: offset++;
! 653:
! 654: /* Peer address. */
! 655: su.sin.sin_family = AF_INET;
! 656: oid2in_addr (offset, IN_ADDR_SIZE, &su.sin.sin_addr);
! 657:
! 658: /* Lookup node. */
! 659: rn = bgp_node_lookup (bgp->rib[AFI_IP][SAFI_UNICAST],
! 660: (struct prefix *) addr);
! 661: if (rn)
! 662: {
! 663: bgp_unlock_node (rn);
! 664:
! 665: for (binfo = rn->info; binfo; binfo = binfo->next)
! 666: if (sockunion_same (&binfo->peer->su, &su))
! 667: return binfo;
! 668: }
! 669: }
! 670: else
! 671: {
! 672: offset = name + v->namelen;
! 673: offsetlen = *length - v->namelen;
! 674: len = offsetlen;
! 675:
! 676: if (offsetlen == 0)
! 677: rn = bgp_table_top (bgp->rib[AFI_IP][SAFI_UNICAST]);
! 678: else
! 679: {
! 680: if (len > IN_ADDR_SIZE)
! 681: len = IN_ADDR_SIZE;
! 682:
! 683: oid2in_addr (offset, len, &addr->prefix);
! 684:
! 685: offset += IN_ADDR_SIZE;
! 686: offsetlen -= IN_ADDR_SIZE;
! 687:
! 688: if (offsetlen > 0)
! 689: addr->prefixlen = *offset;
! 690: else
! 691: addr->prefixlen = len * 8;
! 692:
! 693: rn = bgp_node_get (bgp->rib[AFI_IP][SAFI_UNICAST],
! 694: (struct prefix *) addr);
! 695:
! 696: offset++;
! 697: offsetlen--;
! 698: }
! 699:
! 700: if (offsetlen > 0)
! 701: {
! 702: len = offsetlen;
! 703: if (len > IN_ADDR_SIZE)
! 704: len = IN_ADDR_SIZE;
! 705:
! 706: oid2in_addr (offset, len, &paddr);
! 707: }
! 708: else
! 709: paddr.s_addr = 0;
! 710:
! 711: if (! rn)
! 712: return NULL;
! 713:
! 714: do
! 715: {
! 716: min = NULL;
! 717:
! 718: for (binfo = rn->info; binfo; binfo = binfo->next)
! 719: {
! 720: if (binfo->peer->su.sin.sin_family == AF_INET
! 721: && ntohl (paddr.s_addr)
! 722: < ntohl (binfo->peer->su.sin.sin_addr.s_addr))
! 723: {
! 724: if (min)
! 725: {
! 726: if (ntohl (binfo->peer->su.sin.sin_addr.s_addr)
! 727: < ntohl (min->peer->su.sin.sin_addr.s_addr))
! 728: min = binfo;
! 729: }
! 730: else
! 731: min = binfo;
! 732: }
! 733: }
! 734:
! 735: if (min)
! 736: {
! 737: *length = v->namelen + BGP_PATHATTR_ENTRY_OFFSET;
! 738:
! 739: offset = name + v->namelen;
! 740: oid_copy_addr (offset, &rn->p.u.prefix4, IN_ADDR_SIZE);
! 741: offset += IN_ADDR_SIZE;
! 742: *offset = rn->p.prefixlen;
! 743: offset++;
! 744: oid_copy_addr (offset, &min->peer->su.sin.sin_addr,
! 745: IN_ADDR_SIZE);
! 746: addr->prefix = rn->p.u.prefix4;
! 747: addr->prefixlen = rn->p.prefixlen;
! 748:
! 749: bgp_unlock_node (rn);
! 750:
! 751: return min;
! 752: }
! 753:
! 754: paddr.s_addr = 0;
! 755: }
! 756: while ((rn = bgp_route_next (rn)) != NULL);
! 757: }
! 758: return NULL;
! 759: }
! 760:
! 761: static u_char *
! 762: bgp4PathAttrTable (struct variable *v, oid name[], size_t *length,
! 763: int exact, size_t *var_len, WriteMethod **write_method)
! 764: {
! 765: struct bgp *bgp;
! 766: struct bgp_info *binfo;
! 767: struct prefix_ipv4 addr;
! 768:
! 769: bgp = bgp_get_default ();
! 770: if (! bgp)
! 771: return NULL;
! 772:
! 773: memset (&addr, 0, sizeof (struct prefix_ipv4));
! 774:
! 775: binfo = bgp4PathAttrLookup (v, name, length, bgp, &addr, exact);
! 776: if (! binfo)
! 777: return NULL;
! 778:
! 779: switch (v->magic)
! 780: {
! 781: case BGP4PATHATTRPEER: /* 1 */
! 782: return SNMP_IPADDRESS (binfo->peer->su.sin.sin_addr);
! 783: break;
! 784: case BGP4PATHATTRIPADDRPREFIXLEN: /* 2 */
! 785: return SNMP_INTEGER (addr.prefixlen);
! 786: break;
! 787: case BGP4PATHATTRIPADDRPREFIX: /* 3 */
! 788: return SNMP_IPADDRESS (addr.prefix);
! 789: break;
! 790: case BGP4PATHATTRORIGIN: /* 4 */
! 791: return SNMP_INTEGER (binfo->attr->origin);
! 792: break;
! 793: case BGP4PATHATTRASPATHSEGMENT: /* 5 */
! 794: return aspath_snmp_pathseg (binfo->attr->aspath, var_len);
! 795: break;
! 796: case BGP4PATHATTRNEXTHOP: /* 6 */
! 797: return SNMP_IPADDRESS (binfo->attr->nexthop);
! 798: break;
! 799: case BGP4PATHATTRMULTIEXITDISC: /* 7 */
! 800: return SNMP_INTEGER (binfo->attr->med);
! 801: break;
! 802: case BGP4PATHATTRLOCALPREF: /* 8 */
! 803: return SNMP_INTEGER (binfo->attr->local_pref);
! 804: break;
! 805: case BGP4PATHATTRATOMICAGGREGATE: /* 9 */
! 806: return SNMP_INTEGER (1);
! 807: break;
! 808: case BGP4PATHATTRAGGREGATORAS: /* 10 */
! 809: if (binfo->attr->extra)
! 810: return SNMP_INTEGER (binfo->attr->extra->aggregator_as);
! 811: else
! 812: return SNMP_INTEGER (0);
! 813: break;
! 814: case BGP4PATHATTRAGGREGATORADDR: /* 11 */
! 815: if (binfo->attr->extra)
! 816: return SNMP_IPADDRESS (binfo->attr->extra->aggregator_addr);
! 817: else
! 818: return SNMP_INTEGER (0);
! 819: break;
! 820: case BGP4PATHATTRCALCLOCALPREF: /* 12 */
! 821: return SNMP_INTEGER (-1);
! 822: break;
! 823: case BGP4PATHATTRBEST: /* 13 */
! 824: #define BGP4_PathAttrBest_false 1
! 825: #define BGP4_PathAttrBest_true 2
! 826: if (CHECK_FLAG (binfo->flags, BGP_INFO_SELECTED))
! 827: return SNMP_INTEGER (BGP4_PathAttrBest_true);
! 828: else
! 829: return SNMP_INTEGER (BGP4_PathAttrBest_false);
! 830: break;
! 831: case BGP4PATHATTRUNKNOWN: /* 14 */
! 832: *var_len = 0;
! 833: return NULL;
! 834: break;
! 835: }
! 836: return NULL;
! 837: }
! 838:
! 839: /* BGP Traps. */
! 840: struct trap_object bgpTrapList[] =
! 841: {
! 842: {bgpPeerTable, 3, {3, 1, BGPPEERLASTERROR}},
! 843: {bgpPeerTable, 3, {3, 1, BGPPEERSTATE}}
! 844: };
! 845:
! 846: void
! 847: bgpTrapEstablished (struct peer *peer)
! 848: {
! 849: int ret;
! 850: struct in_addr addr;
! 851: oid index[sizeof (oid) * IN_ADDR_SIZE];
! 852:
! 853: ret = inet_aton (peer->host, &addr);
! 854: if (ret == 0)
! 855: return;
! 856:
! 857: oid_copy_addr (index, &addr, IN_ADDR_SIZE);
! 858:
! 859: smux_trap (bgp_oid, sizeof bgp_oid / sizeof (oid),
! 860: index, IN_ADDR_SIZE,
! 861: bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object),
! 862: bm->start_time - bgp_clock (), BGPESTABLISHED);
! 863: }
! 864:
! 865: void
! 866: bgpTrapBackwardTransition (struct peer *peer)
! 867: {
! 868: int ret;
! 869: struct in_addr addr;
! 870: oid index[sizeof (oid) * IN_ADDR_SIZE];
! 871:
! 872: ret = inet_aton (peer->host, &addr);
! 873: if (ret == 0)
! 874: return;
! 875:
! 876: oid_copy_addr (index, &addr, IN_ADDR_SIZE);
! 877:
! 878: smux_trap (bgp_oid, sizeof bgp_oid / sizeof (oid),
! 879: index, IN_ADDR_SIZE,
! 880: bgpTrapList, sizeof bgpTrapList / sizeof (struct trap_object),
! 881: bm->start_time - bgp_clock (), BGPBACKWARDTRANSITION);
! 882: }
! 883:
! 884: void
! 885: bgp_snmp_init (void)
! 886: {
! 887: smux_init (bm->master);
! 888: REGISTER_MIB("mibII/bgp", bgp_variables, variable, bgp_oid);
! 889: }
! 890: #endif /* HAVE_SNMP */
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