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bird/proto/snmp/snmp.h

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/*
* BIRD -- Simple Network Management Protocol (SNMP)
*
* (c) 2022 Vojtech Vilimek <vojtech.vilimek@nic.cz>
* (c) 2022 CZ.NIC z.s.p.o
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_SNMP_H_
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#define _BIRD_SNMP_H_
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#include "lib/ip.h"
#include "lib/socket.h"
#include "lib/timer.h"
#include "nest/bird.h"
#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
#define SNMP_BGP 1
#define SNMP_OSPF 2
#define SNMP_INVALID 255
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#define SNMP_PORT 705
#define SNMP_RX_BUFFER_SIZE 8192
#define SNMP_TX_BUFFER_SIZE 8192
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enum snmp_proto_state {
SNMP_ERR = 0,
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SNMP_INIT = 1,
SNMP_LOCKED,
SNMP_OPEN,
SNMP_REGISTER,
SNMP_CONN,
SNMP_STOP,
SNMP_DOWN,
/*
SNMP_ERR = 0,
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SNMP_DELAY,
SNMP_INIT,
SNMP_REGISTER,
SNMP_CONN,
SNMP_STOP,
SNMP_DOWN,
SNMP_LISTEN,
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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
#define SNMP_HASH_NEXT(n) n->next
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#define SNMP_HASH_EQ(ip1, ip2) ipa_equal(ip1, ip2)
#define SNMP_HASH_FN(ip) ipa_hash(ip)
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#define SNMP_HASH_LESS4(ip1, ip2) ip4_less(ip1, ip2)
#define SNMP_HASH_LESS6(ip1, ip2) ip6_less(ip1, ip2)
/* hash table only store ip4 addresses */
#define SNMP_HASH_LESS(ip1, ip2) SNMP_HASH_LESS4(ip1,ip2)
struct snmp_bond {
node n;
struct proto_config *proto;
u8 type;
};
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struct snmp_config {
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struct proto_config cf;
ip_addr local_ip;
ip_addr remote_ip;
u16 local_port;
u16 remote_port;
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u32 local_as;
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u8 timeout;
//struct iface *iface;
list bgp_entries;
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u32 bonds;
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};
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struct snmp_bgp_peer {
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struct bgp_config *config;
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ip_addr peer_ip;
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struct snmp_bgp_peer *next;
};
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struct snmp_register {
node n;
u8 mib_class;
u32 session_id;
u32 transaction_id;
u32 packet_id;
struct oid *oid;
};
struct snmp_registered_oid {
node n;
struct oid *oid;
};
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struct snmp_proto {
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struct proto p;
struct object_lock *lock;
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struct linpool *pool;
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ip_addr local_ip;
ip_addr remote_ip;
u16 local_port;
u16 remote_port;
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u32 local_as;
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sock *sock;
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// timeout for what ??
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u8 timeout;
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u32 session_id;
u32 transaction_id;
u32 packet_id;
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uint register_to_ack; /* counter of pending responses to register-pdu */
list register_queue; /* list containing snmp_register records */
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;
timer *startup_timer;
u8 state;
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uint to_send;
uint errs;
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/*
* if the packet hasn't been fully recieved, partial_reponse points
* into the TX buffer to the Response-PDU header (needed for packet payload)
*/
struct agentx_response *partial_response;
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};
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void snmp_tx(sock *sk);
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#endif