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156 lines
3.2 KiB
C
156 lines
3.2 KiB
C
/*
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* BIRD -- Simple Network Management Protocol (SNMP)
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*
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* (c) 2022 Vojtech Vilimek <vojtech.vilimek@nic.cz>
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* (c) 2022 CZ.NIC z.s.p.o
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_SNMP_H_
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#define _BIRD_SNMP_H_
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#include "lib/ip.h"
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#include "lib/socket.h"
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#include "lib/timer.h"
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#include "nest/bird.h"
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#include "nest/protocol.h"
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#include "filter/data.h"
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#include "proto/bgp/bgp.h"
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#define SNMP_UNDEFINED 0
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#define SNMP_BGP 1
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#define SNMP_OSPF 2
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#define SNMP_INVALID 255
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#define SNMP_PORT 705
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#define SNMP_RX_BUFFER_SIZE 8192
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#define SNMP_TX_BUFFER_SIZE 8192
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enum snmp_proto_state {
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SNMP_INIT = 1,
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SNMP_LOCKED,
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SNMP_OPEN,
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SNMP_REGISTER,
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SNMP_CONN,
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SNMP_STOP,
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SNMP_DOWN,
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SNMP_RESET,
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};
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/* hash table macros */
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#define SNMP_HASH_KEY(n) n->peer_ip
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#define SNMP_HASH_NEXT(n) n->next
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#define SNMP_HASH_EQ(ip1, ip2) ipa_equal(ip1, ip2)
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#define SNMP_HASH_FN(ip) ipa_hash(ip)
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#define SNMP_HASH_LESS4(ip1, ip2) ip4_less(ip1, ip2)
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#define SNMP_HASH_LESS6(ip1, ip2) ip6_less(ip1, ip2)
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/* hash table only store ip4 addresses */
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#define SNMP_HASH_LESS(ip1, ip2) SNMP_HASH_LESS4(ip1,ip2)
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struct snmp_bond {
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node n;
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struct proto_config *proto;
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u8 type;
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};
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struct snmp_config {
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struct proto_config cf;
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ip_addr local_ip;
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ip_addr remote_ip;
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u16 local_port;
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u16 remote_port;
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ip_addr bgp_local_id; /* BGP4-MIB related fields */
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u32 bgp_local_as;
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u8 timeout;
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u8 priority;
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//struct iface *iface;
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u32 bonds;
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const char *description;
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list bgp_entries;
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// TODO add support for subagent oid identification
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};
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#define SNMP_BGP_P_REGISTERING 0x01
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#define SNMP_BGP_P_REGISTERED 0x02
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struct snmp_bgp_peer {
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const struct bgp_config *config;
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ip_addr peer_ip;
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u8 flags;
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struct snmp_bgp_peer *next;
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};
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struct snmp_register {
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node n;
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u8 mib_class;
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u32 session_id;
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u32 transaction_id;
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u32 packet_id;
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struct oid *oid;
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};
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struct snmp_registered_oid {
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node n;
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struct oid *oid;
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};
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struct snmp_proto {
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struct proto p;
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struct object_lock *lock;
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pool *pool; /* a shortcut to the procotol mem. pool */
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linpool *lp; /* linpool for bgp_trie nodes */
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ip_addr local_ip;
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ip_addr remote_ip;
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u16 local_port;
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u16 remote_port;
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ip_addr bgp_local_id; /* BGP4-MIB related fields */
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u32 bgp_local_as;
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sock *sock;
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u8 timeout; /* timeout is part of MIB registration. It
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specifies how long should the master
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agent wait for request responses. */
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u32 session_id;
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u32 transaction_id;
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u32 packet_id;
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uint register_to_ack; /* counter of pending responses to register-pdu */
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list register_queue; /* list containing snmp_register records */
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list bgp_registered; /* list of currently registered bgp oids
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* (struct snmp_registered_oid) */
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// map
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struct f_trie *bgp_trie;
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HASH(struct snmp_bgp_peer) bgp_hash;
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struct tbf rl_gen;
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timer *ping_timer;
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uint startup_delay;
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timer *startup_timer;
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u8 state;
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uint to_send;
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uint errs;
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};
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//void snmp_tx(sock *sk);
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void snmp_startup(struct snmp_proto *p);
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void snmp_connected(sock *sk);
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void snmp_startup_timeout(timer *tm);
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void snmp_reconnect(timer *tm);
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void snmp_sock_disconnect(struct snmp_proto *p, int reconnect);
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#endif
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