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e8cad1f275
The code contains hard to debug bug where we periodically do some kind of error. The problem is caused by weird values after the AgentX PDU header, exactly where the first OID should lie. We expend value less than 15 but we found values like 0x00003b47. We found possible cause on assignment to socket's receive buffer position in proto/snmp/subagent.c:snmp_rx at line 1569. An erroneous behavior may have been caused by off-by-on error. More investigation is needed to gain full picture. To resolve this issue we use much more simpler approach. We will set max packet size and wait until whole packet has arrived.
112 lines
3.8 KiB
C
112 lines
3.8 KiB
C
#ifndef _BIRD_SNMP_BGP_MIB_H_
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#define _BIRD_SNMP_BGP_MIB_H_
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#include "snmp.h"
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#include "subagent.h"
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/* peers attributes */
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enum BGP4_MIB_PEER_TABLE {
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SNMP_BGP_PEER_IDENTIFIER = 1,
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SNMP_BGP_STATE = 2,
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SNMP_BGP_ADMIN_STATUS = 3, /* in read-only mode */
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SNMP_BGP_NEGOTIATED_VERSION = 4,
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SNMP_BGP_LOCAL_ADDR = 5,
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SNMP_BGP_LOCAL_PORT = 6,
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SNMP_BGP_REMOTE_ADDR = 7,
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SNMP_BGP_REMOTE_PORT = 8,
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SNMP_BGP_REMOTE_AS = 9,
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SNMP_BGP_RX_UPDATES = 10, /* in updates */
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SNMP_BGP_TX_UPDATES = 11, /* out updates */
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SNMP_BGP_RX_MESSAGES = 12, /* in total messages */
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SNMP_BGP_TX_MESSAGES = 13, /* out total messages */
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SNMP_BGP_LAST_ERROR = 14,
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SNMP_BGP_FSM_TRANSITIONS = 15, /* FSM established transitions */
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SNMP_BGP_FSM_ESTABLISHED_TIME = 16,
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SNMP_BGP_RETRY_INTERVAL = 17,
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SNMP_BGP_HOLD_TIME = 18,
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SNMP_BGP_KEEPALIVE = 19,
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SNMP_BGP_HOLD_TIME_CONFIGURED = 20,
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SNMP_BGP_KEEPALIVE_CONFIGURED = 21,
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SNMP_BGP_ORIGINATION_INTERVAL = 22, /* UNSUPPORTED - 0 */
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SNMP_BGP_MIN_ROUTE_ADVERTISEMENT = 23, /* UNSUPPORTED - 0 */
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SNMP_BGP_IN_UPDATE_ELAPSED_TIME = 24,
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} PACKED;
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/* version of BGP, here BGP-4 */
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#define BGP4_VERSIONS ((char[]) { 0x10 }) /* OID bgp.bgpVersion */
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/* for OID bgp.bgpPeerTable.bgpPeerEntry.bgpPeerNegotiatedVersion */
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#define SNMP_BGP_NEGOTIATED_VER_VALUE 4
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#define SNMP_BGP_NEGOTIATED_VER_NO_VALUE 0
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void snmp_bgp_register(struct snmp_proto *p);
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void snmp_bgp_reg_ok(struct snmp_proto *p, struct agentx_response *r, struct oid *oid);
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void snmp_bgp_reg_failed(struct snmp_proto *p, struct agentx_response *r, struct oid *oid);
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u8 snmp_bgp_get_valid(u8 state);
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u8 snmp_bgp_getnext_valid(u8 state);
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struct oid *snmp_bgp_search(struct snmp_proto *p, struct oid *o_start, struct oid *o_end, uint contid);
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enum snmp_search_res snmp_bgp_search2(struct snmp_proto *p, struct oid **searched, const struct oid *o_end, uint contid);
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void snmp_bgp_fill(struct snmp_proto *p, struct agentx_varbind *vb, struct snmp_pdu *c);
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//int snmp_bgp_testset(struct snmp_proto *p, const struct agentx_varbind *vb, void* tr, struct oid *oid, uint pkt_type);
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void snmp_bgp_notify_established(struct snmp_proto *p, struct bgp_proto *bgp);
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void snmp_bgp_notify_backward_trans(struct snmp_proto *p, struct bgp_proto *bgp);
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#define SNMP_BGP_VERSION 1
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#define SNMP_BGP_LOCAL_AS 2
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#define SNMP_BGP_PEER_TABLE 3
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#define SNMP_BGP_PEER_ENTRY 1
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#define SNMP_BGP_IDENTIFIER 4 /* BGP4-MIB::bgpIdentifier local router id */
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/* BGP linearized state */
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enum BGP_INTERNAL_STATES {
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BGP_INTERNAL_INVALID = 0,
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BGP_INTERNAL_START = 1,
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BGP_INTERNAL_BGP,
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BGP_INTERNAL_VERSION,
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BGP_INTERNAL_LOCAL_AS,
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BGP_INTERNAL_PEER_TABLE,
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BGP_INTERNAL_PEER_ENTRY,
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BGP_INTERNAL_PEER_IDENTIFIER,
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BGP_INTERNAL_STATE,
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BGP_INTERNAL_ADMIN_STATUS,
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BGP_INTERNAL_NEGOTIATED_VERSION,
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BGP_INTERNAL_LOCAL_ADDR,
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BGP_INTERNAL_LOCAL_PORT,
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BGP_INTERNAL_REMOTE_ADDR,
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BGP_INTERNAL_REMOTE_PORT,
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BGP_INTERNAL_REMOTE_AS,
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BGP_INTERNAL_RX_UPDATES,
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BGP_INTERNAL_TX_UPDATES,
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BGP_INTERNAL_RX_MESSAGES,
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BGP_INTERNAL_TX_MESSAGES,
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BGP_INTERNAL_LAST_ERROR,
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BGP_INTERNAL_FSM_TRANSITIONS,
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BGP_INTERNAL_FSM_ESTABLISHED_TIME,
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BGP_INTERNAL_RETRY_INTERVAL,
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BGP_INTERNAL_HOLD_TIME,
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BGP_INTERNAL_KEEPALIVE,
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BGP_INTERNAL_HOLD_TIME_CONFIGURED,
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BGP_INTERNAL_KEEPALIVE_CONFIGURED,
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BGP_INTERNAL_ORIGINATION_INTERVAL,
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BGP_INTERNAL_MIN_ROUTE_ADVERTISEMENT,
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BGP_INTERNAL_IN_UPDATE_ELAPSED_TIME,
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BGP_INTERNAL_PEER_TABLE_END,
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BGP_INTERNAL_IDENTIFIER, /* local identification */
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BGP_INTERNAL_END,
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BGP_INTERNAL_NO_VALUE = 255,
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} PACKED;
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enum bgp4_mib_bgp_states {
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BGP_MIB_IDLE = 1,
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BGP_MIB_CONNECT = 2,
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BGP_MIB_ACTIVE = 3,
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BGP_MIB_OPENSENT = 4,
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BGP_MIB_OPENCONFIRM = 5,
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BGP_MIB_ESTABLISHED = 6,
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};
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#endif
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