mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-23 02:01:55 +00:00
136 lines
4.5 KiB
C
136 lines
4.5 KiB
C
/*
|
|
* BIRD -- The BGP Monitoring Protocol (BMP)
|
|
*
|
|
* (c) 2020 Akamai Technologies, Inc. (Pawel Maslanka, pmaslank@akamai.com)
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_BMP_H_
|
|
#define _BIRD_BMP_H_
|
|
|
|
#include "nest/bird.h"
|
|
#include "nest/protocol.h"
|
|
#include "lib/lists.h"
|
|
#include "nest/route.h"
|
|
#include "lib/event.h"
|
|
#include "lib/hash.h"
|
|
#include "lib/socket.h"
|
|
#include "proto/bmp/map.h"
|
|
|
|
// Max length of MIB-II description object
|
|
#define MIB_II_STR_LEN 255
|
|
|
|
// The following fields of this structure controls whether there will be put
|
|
// specific routes into Route Monitoring message and send to BMP collector
|
|
struct monitoring_rib {
|
|
bool in_pre_policy; // Monitoring pre-policy Adj-Rib-In
|
|
bool in_post_policy; // Monitoring post-policy Adj-Rib-In
|
|
bool local; // Monitoring Local Rib
|
|
};
|
|
|
|
struct bmp_config {
|
|
struct proto_config c;
|
|
const char *sys_descr; // sysDescr MIB-II [RFC1213] object
|
|
const char *sys_name; // sysName MIB-II [RFC1213] object
|
|
ip_addr local_addr; // Local IP address
|
|
ip_addr station_ip; // Monitoring station address
|
|
u16 station_port; // Monitoring station TCP port
|
|
bool monitoring_rib_in_pre_policy; // Route monitoring pre-policy Adj-Rib-In
|
|
bool monitoring_rib_in_post_policy; // Route monitoring post-policy Adj-Rib-In
|
|
};
|
|
|
|
/* Forward declarations */
|
|
struct bgp_proto;
|
|
struct bmp_proto;
|
|
|
|
struct bmp_proto {
|
|
struct proto p; // Parent proto
|
|
const struct bmp_config *cf; // Shortcut to BMP configuration
|
|
|
|
HASH(struct bmp_peer) peer_map;
|
|
HASH(struct bmp_stream) stream_map;
|
|
HASH(struct bmp_table) table_map;
|
|
|
|
sock *sk; // TCP connection
|
|
event *tx_ev; // TX event
|
|
event *update_ev; // Update event
|
|
char sys_descr[MIB_II_STR_LEN]; // sysDescr MIB-II [RFC1213] object
|
|
char sys_name[MIB_II_STR_LEN]; // sysName MIB-II [RFC1213] object
|
|
ip_addr local_addr; // Source local IP address
|
|
ip_addr station_ip; // Monitoring station IP address
|
|
u16 station_port; // Monitoring station TCP port
|
|
struct monitoring_rib monitoring_rib;
|
|
// Below fields are for internal use
|
|
// struct bmp_peer_map bgp_peers; // Stores 'bgp_proto' structure per BGP peer
|
|
pool *buffer_mpool; // Memory pool used for BMP buffer allocations
|
|
pool *map_mem_pool; // Memory pool used for BMP map allocations
|
|
pool *tx_mem_pool; // Memory pool used for packet allocations designated to BMP collector
|
|
pool *update_msg_mem_pool; // Memory pool used for BPG UPDATE MSG allocations
|
|
list tx_queue; // Stores queued packets going to be sent
|
|
timer *connect_retry_timer; // Timer for retrying connection to the BMP collector
|
|
list update_msg_queue; // Stores all composed BGP UPDATE MSGs
|
|
bool started; // Flag that stores running status of BMP instance
|
|
int sock_err; // Last socket error code
|
|
|
|
struct lfjour_recipient proto_state_reader; // Reader of protocol states
|
|
event proto_state_changed;
|
|
};
|
|
|
|
struct bmp_peer {
|
|
ea_list *bgp;
|
|
struct bmp_peer *next;
|
|
list streams;
|
|
};
|
|
|
|
struct bmp_stream {
|
|
node n;
|
|
ea_list *bgp;
|
|
u32 key;
|
|
bool sync;
|
|
bool shutting_down;
|
|
struct bmp_stream *next;
|
|
struct bmp_table *table;
|
|
ea_list *sender;
|
|
int in_pre_policy;
|
|
};
|
|
|
|
struct bmp_table {
|
|
rtable *table;
|
|
struct bmp_table *next;
|
|
struct channel *channel;
|
|
struct rt_export_request out_req;
|
|
struct bmp_proto *p;
|
|
struct rt_export_feeder in_req;
|
|
event event;
|
|
atomic_int uc;
|
|
};
|
|
|
|
|
|
#ifdef CONFIG_BMP
|
|
|
|
/**
|
|
* bmp_peer_up - send notification that BGP peer connection is established
|
|
*/
|
|
void
|
|
bmp_peer_up(struct ea_list *bgp,
|
|
const byte *tx_open_msg, uint tx_open_length,
|
|
const byte *rx_open_msg, uint rx_open_length);
|
|
|
|
/**
|
|
* bmp_peer_down - send notification that BGP peer connection is not in
|
|
* established state
|
|
*/
|
|
void
|
|
bmp_peer_down(const struct bgp_proto *bgp, int err_class, int code, int subcode, const byte *data, int length);
|
|
|
|
|
|
#else /* BMP build disabled */
|
|
|
|
static inline void bmp_peer_up(struct bgp_proto *bgp UNUSED, const byte *tx_open_msg UNUSED, uint tx_open_length UNUSED, const byte *rx_open_msg UNUSED, uint rx_open_length UNUSED) { }
|
|
static inline void bmp_peer_down(const struct bgp_proto *bgp UNUSED, const int err_class UNUSED, int code UNUSED, int subcode UNUSED, const byte *data UNUSED, int length UNUSED) { }
|
|
|
|
#endif /* CONFIG_BMP */
|
|
|
|
#endif /* _BIRD_BMP_H_ */
|