int
main (void)
{
int i = 0;
bgp_master_init ();
master = bm->master;
bgp_option_set (BGP_OPT_NO_LISTEN);
bgp_attr_init ();
while (test_segments[i].name)
{
printf ("test %u\n", i);
parse_test (&test_segments[i]);
empty_prepend_test (&test_segments[i++]);
}
i = 0;
while (prepend_tests[i].test1)
{
printf ("prepend test %u\n", i);
prepend_test (&prepend_tests[i++]);
}
i = 0;
while (aggregate_tests[i].test1)
{
printf ("aggregate test %u\n", i);
aggregate_test (&aggregate_tests[i++]);
}
i = 0;
while (reconcile_tests[i].test1)
{
printf ("reconcile test %u\n", i);
as4_reconcile_test (&reconcile_tests[i++]);
}
i = 0;
cmp_test();
i = 0;
empty_get_test();
i = 0;
while (aspath_tests[i].desc)
{
printf ("aspath_attr test %d\n", i);
attr_test (&aspath_tests[i++]);
}
printf ("failures: %d\n", failed);
printf ("aspath count: %ld\n", aspath_count());
return (failed + aspath_count());
}
void
bgp_conn_enter_established_state(struct bgp_conn *conn)
{
struct bgp_proto *p = conn->bgp;
BGP_TRACE(D_EVENTS, "BGP session established");
DBG("BGP: UP!!!\n");
/* For multi-hop BGP sessions */
if (ipa_zero(p->source_addr))
p->source_addr = conn->sk->saddr;
p->conn = conn;
p->last_error_class = 0;
p->last_error_code = 0;
bgp_attr_init(conn->bgp);
bgp_conn_set_state(conn, BS_ESTABLISHED);
proto_notify_state(&p->p, PS_UP);
}
/* basic parsing test */
static void
parse_test (struct peer *peer, struct test_segment *t, int type)
{
int parse_ret = 0, nlri_ret = 0;
struct attr attr = { };
struct bgp_nlri nlri = { };
struct bgp_attr_parser_args attr_args = {
.peer = peer,
.length = t->len,
.total = 1,
.attr = &attr,
.type = type,
.flags = BGP_ATTR_FLAG_OPTIONAL,
.startp = BGP_INPUT_PNT (peer),
};
#define RANDOM_FUZZ 35
stream_reset (peer->ibuf);
stream_put (peer->ibuf, NULL, RANDOM_FUZZ);
stream_set_getp (peer->ibuf, RANDOM_FUZZ);
stream_write (peer->ibuf, t->data, t->len);
printf ("%s: %s\n", t->name, t->desc);
if (type == BGP_ATTR_MP_REACH_NLRI)
parse_ret = bgp_mp_reach_parse (&attr_args, &nlri);
else
parse_ret = bgp_mp_unreach_parse (&attr_args, &nlri);
if (parse_ret == 0 && t->afi_valid == VALID_AFI)
assert (nlri.afi == t->afi && nlri.safi == t->safi);
if (!parse_ret)
{
if (type == BGP_ATTR_MP_REACH_NLRI)
nlri_ret = bgp_nlri_parse (peer, &attr, &nlri);
else
nlri_ret = bgp_nlri_parse (peer, NULL, &nlri);
}
handle_result (peer, t, parse_ret, nlri_ret);
}
static struct bgp *bgp;
static as_t asn = 100;
int
main (void)
{
struct peer *peer;
int i, j;
conf_bgp_debug_fsm = -1UL;
conf_bgp_debug_events = -1UL;
conf_bgp_debug_packet = -1UL;
conf_bgp_debug_normal = -1UL;
conf_bgp_debug_as4 = -1UL;
term_bgp_debug_fsm = -1UL;
term_bgp_debug_events = -1UL;
term_bgp_debug_packet = -1UL;
term_bgp_debug_normal = -1UL;
term_bgp_debug_as4 = -1UL;
master = thread_master_create ();
bgp_master_init ();
bgp_option_set (BGP_OPT_NO_LISTEN);
bgp_attr_init ();
bgp_address_init ();
if (fileno (stdout) >= 0)
tty = isatty (fileno (stdout));
if (bgp_get (&bgp, &asn, NULL))
return -1;
peer = peer_create_accept (bgp);
peer->host = (char *)"foo";
peer->status = Established;
for (i = AFI_IP; i < AFI_MAX; i++)
for (j = SAFI_UNICAST; j < SAFI_MAX; j++)
{
peer->afc[i][j] = 1;
peer->afc_adv[i][j] = 1;
}
i = 0;
while (mp_reach_segments[i].name)
parse_test (peer, &mp_reach_segments[i++], BGP_ATTR_MP_REACH_NLRI);
i = 0;
while (mp_unreach_segments[i].name)
parse_test (peer, &mp_unreach_segments[i++], BGP_ATTR_MP_UNREACH_NLRI);
printf ("failures: %d\n", failed);
return failed;
}
void skinny_bmp_daemon()
{
int slen, clen, ret, rc, peers_idx, allowed, yes=1, no=0;
int peers_idx_rr = 0, max_peers_idx = 0;
u_int32_t pkt_remaining_len=0;
time_t now;
afi_t afi;
safi_t safi;
struct bmp_peer *bmpp = NULL;
struct bgp_peer *peer = NULL;
#if defined ENABLE_IPV6
struct sockaddr_storage server, client;
#else
struct sockaddr server, client;
#endif
struct hosts_table allow;
struct host_addr addr;
struct bgp_peer_batch bp_batch;
/* select() stuff */
fd_set read_descs, bkp_read_descs;
int fd, select_fd, bkp_select_fd, recalc_fds, select_num;
/* logdump time management */
time_t dump_refresh_deadline;
struct timeval dump_refresh_timeout, *drt_ptr;
/* initial cleanups */
reload_map_bmp_thread = FALSE;
reload_log_bmp_thread = FALSE;
memset(&server, 0, sizeof(server));
memset(&client, 0, sizeof(client));
memset(&allow, 0, sizeof(struct hosts_table));
clen = sizeof(client);
bmp_routing_db = &inter_domain_routing_dbs[FUNC_TYPE_BMP];
memset(bmp_routing_db, 0, sizeof(struct bgp_rt_structs));
/* socket creation for BMP server: IPv4 only */
#if (defined ENABLE_IPV6)
if (!config.nfacctd_bmp_ip) {
struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)&server;
sa6->sin6_family = AF_INET6;
sa6->sin6_port = htons(config.nfacctd_bmp_port);
slen = sizeof(struct sockaddr_in6);
}
#else
if (!config.nfacctd_bmp_ip) {
struct sockaddr_in *sa4 = (struct sockaddr_in *)&server;
sa4->sin_family = AF_INET;
sa4->sin_addr.s_addr = htonl(0);
sa4->sin_port = htons(config.nfacctd_bmp_port);
slen = sizeof(struct sockaddr_in);
}
#endif
else {
trim_spaces(config.nfacctd_bmp_ip);
ret = str_to_addr(config.nfacctd_bmp_ip, &addr);
if (!ret) {
Log(LOG_ERR, "ERROR ( %s/%s ): 'bmp_daemon_ip' value is not a valid IPv4/IPv6 address. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
slen = addr_to_sa((struct sockaddr *)&server, &addr, config.nfacctd_bmp_port);
}
if (!config.nfacctd_bmp_max_peers) config.nfacctd_bmp_max_peers = BMP_MAX_PEERS_DEFAULT;
Log(LOG_INFO, "INFO ( %s/%s ): maximum BMP peers allowed: %d\n", config.name, bmp_misc_db->log_str, config.nfacctd_bmp_max_peers);
bmp_peers = malloc(config.nfacctd_bmp_max_peers*sizeof(struct bmp_peer));
if (!bmp_peers) {
Log(LOG_ERR, "ERROR ( %s/%s ): Unable to malloc() BMP peers structure. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
memset(bmp_peers, 0, config.nfacctd_bmp_max_peers*sizeof(struct bmp_peer));
if (config.nfacctd_bmp_msglog_file || config.nfacctd_bmp_msglog_amqp_routing_key || config.nfacctd_bmp_msglog_kafka_topic) {
if (config.nfacctd_bmp_msglog_file) bmp_misc_db->msglog_backend_methods++;
if (config.nfacctd_bmp_msglog_amqp_routing_key) bmp_misc_db->msglog_backend_methods++;
if (config.nfacctd_bmp_msglog_kafka_topic) bmp_misc_db->msglog_backend_methods++;
if (bmp_misc_db->msglog_backend_methods > 1) {
Log(LOG_ERR, "ERROR ( %s/%s ): bmp_daemon_msglog_file, bmp_daemon_msglog_amqp_routing_key and bmp_daemon_msglog_kafka_topic are mutually exclusive. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
}
if (config.bmp_dump_file || config.bmp_dump_amqp_routing_key || config.bmp_dump_kafka_topic) {
if (config.bmp_dump_file) bmp_misc_db->dump_backend_methods++;
if (config.bmp_dump_amqp_routing_key) bmp_misc_db->dump_backend_methods++;
if (config.bmp_dump_kafka_topic) bmp_misc_db->dump_backend_methods++;
if (bmp_misc_db->dump_backend_methods > 1) {
Log(LOG_ERR, "ERROR ( %s/%s ): bmp_dump_file, bmp_dump_amqp_routing_key and bmp_dump_kafka_topic are mutually exclusive. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
}
if (bmp_misc_db->msglog_backend_methods || bmp_misc_db->dump_backend_methods)
bgp_peer_log_seq_init(&bmp_misc_db->log_seq);
if (bmp_misc_db->msglog_backend_methods) {
bmp_misc_db->peers_log = malloc(config.nfacctd_bmp_max_peers*sizeof(struct bgp_peer_log));
if (!bmp_misc_db->peers_log) {
Log(LOG_ERR, "ERROR ( %s/%s ): Unable to malloc() BMP peers log structure. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
memset(bmp_misc_db->peers_log, 0, config.nfacctd_bmp_max_peers*sizeof(struct bgp_peer_log));
if (config.nfacctd_bmp_msglog_amqp_routing_key) {
#ifdef WITH_RABBITMQ
bmp_daemon_msglog_init_amqp_host();
p_amqp_connect_to_publish(&bmp_daemon_msglog_amqp_host);
if (!config.nfacctd_bmp_msglog_amqp_retry)
config.nfacctd_bmp_msglog_amqp_retry = AMQP_DEFAULT_RETRY;
#else
Log(LOG_WARNING, "WARN ( %s/%s ): p_amqp_connect_to_publish() not possible due to missing --enable-rabbitmq\n", config.name, bmp_misc_db->log_str);
#endif
}
if (config.nfacctd_bmp_msglog_kafka_topic) {
#ifdef WITH_KAFKA
bmp_daemon_msglog_init_kafka_host();
#else
Log(LOG_WARNING, "WARN ( %s/%s ): p_kafka_connect_to_produce() not possible due to missing --enable-kafka\n", config.name, bmp_misc_db->log_str);
#endif
}
}
if (!config.bmp_table_attr_hash_buckets) config.bmp_table_attr_hash_buckets = HASHTABSIZE;
bgp_attr_init(config.bmp_table_attr_hash_buckets, bmp_routing_db);
if (!config.bmp_table_peer_buckets) config.bmp_table_peer_buckets = DEFAULT_BGP_INFO_HASH;
if (!config.bmp_table_per_peer_buckets) config.bmp_table_per_peer_buckets = DEFAULT_BGP_INFO_PER_PEER_HASH;
if (config.bmp_table_per_peer_hash == BGP_ASPATH_HASH_PATHID)
bmp_route_info_modulo = bmp_route_info_modulo_pathid;
else {
Log(LOG_ERR, "ERROR ( %s/%s ): Unknown 'bmp_table_per_peer_hash' value. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
config.bmp_sock = socket(((struct sockaddr *)&server)->sa_family, SOCK_STREAM, 0);
if (config.bmp_sock < 0) {
#if (defined ENABLE_IPV6)
/* retry with IPv4 */
if (!config.nfacctd_bmp_ip) {
struct sockaddr_in *sa4 = (struct sockaddr_in *)&server;
sa4->sin_family = AF_INET;
sa4->sin_addr.s_addr = htonl(0);
sa4->sin_port = htons(config.nfacctd_bmp_port);
slen = sizeof(struct sockaddr_in);
config.bmp_sock = socket(((struct sockaddr *)&server)->sa_family, SOCK_STREAM, 0);
}
#endif
if (config.bmp_sock < 0) {
Log(LOG_ERR, "ERROR ( %s/%s ): thread socket() failed. Terminating thread.\n", config.name, bmp_misc_db->log_str);
exit_all(1);
}
}
if (config.nfacctd_bmp_ipprec) {
int opt = config.nfacctd_bmp_ipprec << 5;
rc = setsockopt(config.bmp_sock, IPPROTO_IP, IP_TOS, &opt, sizeof(opt));
if (rc < 0) Log(LOG_ERR, "WARN ( %s/%s ): setsockopt() failed for IP_TOS (errno: %d).\n", config.name, bmp_misc_db->log_str, errno);
}
rc = setsockopt(config.bmp_sock, SOL_SOCKET, SO_REUSEADDR, (char *)&yes, sizeof(yes));
if (rc < 0) Log(LOG_ERR, "WARN ( %s/%s ): setsockopt() failed for SO_REUSEADDR (errno: %d).\n", config.name, bmp_misc_db->log_str, errno);
#if (defined ENABLE_IPV6) && (defined IPV6_BINDV6ONLY)
rc = setsockopt(config.bmp_sock, IPPROTO_IPV6, IPV6_BINDV6ONLY, (char *) &no, (socklen_t) sizeof(no));
if (rc < 0) Log(LOG_ERR, "WARN ( %s/%s ): setsockopt() failed for IPV6_BINDV6ONLY (errno: %d).\n", config.name, bmp_misc_db->log_str, errno);
#endif
if (config.nfacctd_bmp_pipe_size) {
int l = sizeof(config.nfacctd_bmp_pipe_size);
int saved = 0, obtained = 0;
getsockopt(config.bmp_sock, SOL_SOCKET, SO_RCVBUF, &saved, &l);
Setsocksize(config.bmp_sock, SOL_SOCKET, SO_RCVBUF, &config.nfacctd_bmp_pipe_size, sizeof(config.nfacctd_bmp_pipe_size));
getsockopt(config.bmp_sock, SOL_SOCKET, SO_RCVBUF, &obtained, &l);
Setsocksize(config.bmp_sock, SOL_SOCKET, SO_RCVBUF, &saved, l);
getsockopt(config.bmp_sock, SOL_SOCKET, SO_RCVBUF, &obtained, &l);
Log(LOG_INFO, "INFO ( %s/%s ): bmp_daemon_pipe_size: obtained=%d target=%d.\n", config.name, bmp_misc_db->log_str, obtained, config.nfacctd_bmp_pipe_size);
}
rc = bind(config.bmp_sock, (struct sockaddr *) &server, slen);
if (rc < 0) {
char null_ip_address[] = "0.0.0.0";
char *ip_address;
ip_address = config.nfacctd_bmp_ip ? config.nfacctd_bmp_ip : null_ip_address;
Log(LOG_ERR, "ERROR ( %s/%s ): bind() to ip=%s port=%d/tcp failed (errno: %d).\n", config.name, bmp_misc_db->log_str, ip_address, config.nfacctd_bmp_port, errno);
exit_all(1);
}
rc = listen(config.bmp_sock, 1);
if (rc < 0) {
Log(LOG_ERR, "ERROR ( %s/%s ): listen() failed (errno: %d).\n", config.name, bmp_misc_db->log_str, errno);
exit_all(1);
}
/* Preparing for syncronous I/O multiplexing */
select_fd = 0;
FD_ZERO(&bkp_read_descs);
FD_SET(config.bmp_sock, &bkp_read_descs);
{
char srv_string[INET6_ADDRSTRLEN];
struct host_addr srv_addr;
u_int16_t srv_port;
sa_to_addr((struct sockaddr *)&server, &srv_addr, &srv_port);
addr_to_str(srv_string, &srv_addr);
Log(LOG_INFO, "INFO ( %s/%s ): waiting for BMP data on %s:%u\n", config.name, bmp_misc_db->log_str, srv_string, srv_port);
}
/* Preparing ACL, if any */
if (config.nfacctd_bmp_allow_file) load_allow_file(config.nfacctd_bmp_allow_file, &allow);
/* Let's initialize clean shared RIB */
for (afi = AFI_IP; afi < AFI_MAX; afi++) {
for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++) {
bmp_routing_db->rib[afi][safi] = bgp_table_init(afi, safi);
}
}
/* BMP peers batching checks */
if ((config.nfacctd_bmp_batch && !config.nfacctd_bmp_batch_interval) ||
(config.nfacctd_bmp_batch_interval && !config.nfacctd_bmp_batch)) {
Log(LOG_WARNING, "WARN ( %s/%s ): 'bmp_daemon_batch_interval' and 'bmp_daemon_batch' both set to zero.\n", config.name, bmp_misc_db->log_str);
config.nfacctd_bmp_batch = 0;
config.nfacctd_bmp_batch_interval = 0;
}
else bgp_batch_init(&bp_batch, config.nfacctd_bmp_batch, config.nfacctd_bmp_batch_interval);
if (bmp_misc_db->msglog_backend_methods) {
#ifdef WITH_JANSSON
if (!config.nfacctd_bmp_msglog_output) config.nfacctd_bmp_msglog_output = PRINT_OUTPUT_JSON;
#else
Log(LOG_WARNING, "WARN ( %s/%s ): bmp_daemon_msglog_output set to json but will produce no output (missing --enable-jansson).\n", config.name, bmp_misc_db->log_str);
#endif
}
if (bmp_misc_db->dump_backend_methods) {
#ifdef WITH_JANSSON
if (!config.bmp_dump_output) config.bmp_dump_output = PRINT_OUTPUT_JSON;
#else
Log(LOG_WARNING, "WARN ( %s/%s ): bmp_table_dump_output set to json but will produce no output (missing --enable-jansson).\n", config.name, bmp_misc_db->log_str);
#endif
}
if (bmp_misc_db->dump_backend_methods) {
char dump_roundoff[] = "m";
time_t tmp_time;
if (config.bmp_dump_refresh_time) {
gettimeofday(&bmp_misc_db->log_tstamp, NULL);
dump_refresh_deadline = bmp_misc_db->log_tstamp.tv_sec;
tmp_time = roundoff_time(dump_refresh_deadline, dump_roundoff);
while ((tmp_time+config.bmp_dump_refresh_time) < dump_refresh_deadline) {
tmp_time += config.bmp_dump_refresh_time;
}
dump_refresh_deadline = tmp_time;
dump_refresh_deadline += config.bmp_dump_refresh_time; /* it's a deadline not a basetime */
}
else {
config.bmp_dump_file = NULL;
bmp_misc_db->dump_backend_methods = FALSE;
Log(LOG_WARNING, "WARN ( %s/%s ): Invalid 'bmp_dump_refresh_time'.\n", config.name, bmp_misc_db->log_str);
}
if (config.bmp_dump_amqp_routing_key) bmp_dump_init_amqp_host();
if (config.bmp_dump_kafka_topic) bmp_dump_init_kafka_host();
}
select_fd = bkp_select_fd = (config.bmp_sock + 1);
recalc_fds = FALSE;
bmp_link_misc_structs(bmp_misc_db);
for (;;) {
select_again:
if (recalc_fds) {
select_fd = config.bmp_sock;
max_peers_idx = -1; /* .. since valid indexes include 0 */
for (peers_idx = 0; peers_idx < config.nfacctd_bmp_max_peers; peers_idx++) {
if (select_fd < bmp_peers[peers_idx].self.fd) select_fd = bmp_peers[peers_idx].self.fd;
if (bmp_peers[peers_idx].self.fd) max_peers_idx = peers_idx;
}
select_fd++;
max_peers_idx++;
bkp_select_fd = select_fd;
recalc_fds = FALSE;
}
else select_fd = bkp_select_fd;
memcpy(&read_descs, &bkp_read_descs, sizeof(bkp_read_descs));
if (bmp_misc_db->dump_backend_methods) {
int delta;
calc_refresh_timeout_sec(dump_refresh_deadline, bmp_misc_db->log_tstamp.tv_sec, &delta);
dump_refresh_timeout.tv_sec = delta;
dump_refresh_timeout.tv_usec = 0;
drt_ptr = &dump_refresh_timeout;
}
else drt_ptr = NULL;
select_num = select(select_fd, &read_descs, NULL, NULL, drt_ptr);
if (select_num < 0) goto select_again;
if (reload_map_bmp_thread) {
if (config.nfacctd_bmp_allow_file) load_allow_file(config.nfacctd_bmp_allow_file, &allow);
reload_map_bmp_thread = FALSE;
}
if (reload_log_bmp_thread) {
for (peers_idx = 0; peers_idx < config.nfacctd_bmp_max_peers; peers_idx++) {
if (bmp_misc_db->peers_log[peers_idx].fd) {
fclose(bmp_misc_db->peers_log[peers_idx].fd);
bmp_misc_db->peers_log[peers_idx].fd = open_output_file(bmp_misc_db->peers_log[peers_idx].filename, "a", FALSE);
setlinebuf(bmp_misc_db->peers_log[peers_idx].fd);
}
else break;
}
reload_log_bmp_thread = FALSE;
}
if (bmp_misc_db->msglog_backend_methods || bmp_misc_db->dump_backend_methods) {
gettimeofday(&bmp_misc_db->log_tstamp, NULL);
compose_timestamp(bmp_misc_db->log_tstamp_str, SRVBUFLEN, &bmp_misc_db->log_tstamp, TRUE,
config.timestamps_since_epoch, config.timestamps_rfc3339, config.timestamps_utc);
if (bmp_misc_db->dump_backend_methods) {
while (bmp_misc_db->log_tstamp.tv_sec > dump_refresh_deadline) {
bmp_misc_db->dump.tstamp.tv_sec = dump_refresh_deadline;
bmp_misc_db->dump.tstamp.tv_usec = 0;
compose_timestamp(bmp_misc_db->dump.tstamp_str, SRVBUFLEN, &bmp_misc_db->dump.tstamp, FALSE,
config.timestamps_since_epoch, config.timestamps_rfc3339, config.timestamps_utc);
bmp_misc_db->dump.period = config.bmp_dump_refresh_time;
bmp_handle_dump_event();
dump_refresh_deadline += config.bmp_dump_refresh_time;
}
}
#ifdef WITH_RABBITMQ
if (config.nfacctd_bmp_msglog_amqp_routing_key) {
time_t last_fail = P_broker_timers_get_last_fail(&bmp_daemon_msglog_amqp_host.btimers);
if (last_fail && ((last_fail + P_broker_timers_get_retry_interval(&bmp_daemon_msglog_amqp_host.btimers)) <= bmp_misc_db->log_tstamp.tv_sec)) {
bmp_daemon_msglog_init_amqp_host();
p_amqp_connect_to_publish(&bmp_daemon_msglog_amqp_host);
}
}
#endif
#ifdef WITH_KAFKA
if (config.nfacctd_bmp_msglog_kafka_topic) {
time_t last_fail = P_broker_timers_get_last_fail(&bmp_daemon_msglog_kafka_host.btimers);
if (last_fail && ((last_fail + P_broker_timers_get_retry_interval(&bmp_daemon_msglog_kafka_host.btimers)) <= bmp_misc_db->log_tstamp.tv_sec))
bmp_daemon_msglog_init_kafka_host();
}
#endif
}
/*
If select_num == 0 then we got out of select() due to a timeout rather
than because we had a message from a peer to handle. By now we did all
routine checks and can happily return to select() again.
*/
if (!select_num) goto select_again;
/* New connection is coming in */
if (FD_ISSET(config.bmp_sock, &read_descs)) {
int peers_check_idx, peers_num;
fd = accept(config.bmp_sock, (struct sockaddr *) &client, &clen);
if (fd == ERR) goto read_data;
#if defined ENABLE_IPV6
ipv4_mapped_to_ipv4(&client);
#endif
/* If an ACL is defined, here we check against and enforce it */
if (allow.num) allowed = check_allow(&allow, (struct sockaddr *)&client);
else allowed = TRUE;
if (!allowed) {
close(fd);
goto read_data;
}
for (peer = NULL, peers_idx = 0; peers_idx < config.nfacctd_bmp_max_peers; peers_idx++) {
if (!bmp_peers[peers_idx].self.fd) {
now = time(NULL);
/*
Admitted if:
* batching feature is disabled or
* we have room in the current batch or
* we can start a new batch
*/
if (bgp_batch_is_admitted(&bp_batch, now)) {
peer = &bmp_peers[peers_idx].self;
bmpp = &bmp_peers[peers_idx];
if (bmp_peer_init(bmpp, FUNC_TYPE_BMP)) {
peer = NULL;
bmpp = NULL;
}
else recalc_fds = TRUE;
log_notification_unset(&log_notifications.bgp_peers_throttling);
if (bgp_batch_is_enabled(&bp_batch) && peer) {
if (bgp_batch_is_expired(&bp_batch, now)) bgp_batch_reset(&bp_batch, now);
if (bgp_batch_is_not_empty(&bp_batch)) bgp_batch_decrease_counter(&bp_batch);
}
break;
}
else { /* throttle */
/* We briefly accept the new connection to be able to drop it */
if (!log_notification_isset(&log_notifications.bmp_peers_throttling, now)) {
Log(LOG_INFO, "INFO ( %s/%s ): throttling at BMP peer #%u\n", config.name, bmp_misc_db->log_str, peers_idx);
log_notification_set(&log_notifications.bmp_peers_throttling, now, FALSE);
}
close(fd);
goto read_data;
}
}
}
if (!peer) {
int fd;
/* We briefly accept the new connection to be able to drop it */
Log(LOG_ERR, "ERROR ( %s/%s ): Insufficient number of BMP peers has been configured by 'bmp_daemon_max_peers' (%d).\n",
config.name, bmp_misc_db->log_str, config.nfacctd_bmp_max_peers);
close(fd);
goto read_data;
}
peer->fd = fd;
FD_SET(peer->fd, &bkp_read_descs);
peer->addr.family = ((struct sockaddr *)&client)->sa_family;
if (peer->addr.family == AF_INET) {
peer->addr.address.ipv4.s_addr = ((struct sockaddr_in *)&client)->sin_addr.s_addr;
peer->tcp_port = ntohs(((struct sockaddr_in *)&client)->sin_port);
}
#if defined ENABLE_IPV6
else if (peer->addr.family == AF_INET6) {
memcpy(&peer->addr.address.ipv6, &((struct sockaddr_in6 *)&client)->sin6_addr, 16);
peer->tcp_port = ntohs(((struct sockaddr_in6 *)&client)->sin6_port);
}
#endif
addr_to_str(peer->addr_str, &peer->addr);
memcpy(&peer->id, &peer->addr, sizeof(struct host_addr)); /* XXX: some inet_ntoa()'s could be around against peer->id */
if (bmp_misc_db->msglog_backend_methods)
bgp_peer_log_init(peer, config.nfacctd_bmp_msglog_output, FUNC_TYPE_BMP);
if (bmp_misc_db->dump_backend_methods)
bmp_dump_init_peer(peer);
/* Check: multiple TCP connections per peer */
for (peers_check_idx = 0, peers_num = 0; peers_check_idx < config.nfacctd_bmp_max_peers; peers_check_idx++) {
if (peers_idx != peers_check_idx && !memcmp(&bmp_peers[peers_check_idx].self.addr, &peer->addr, sizeof(bmp_peers[peers_check_idx].self.addr))) {
if (bmp_misc_db->is_thread && !config.nfacctd_bgp_to_agent_map) {
Log(LOG_WARNING, "WARN ( %s/%s ): [%s] Multiple connections from peer and no bgp_agent_map defined.\n",
config.name, bmp_misc_db->log_str, bmp_peers[peers_check_idx].self.addr_str);
}
}
else {
if (bmp_peers[peers_check_idx].self.fd) peers_num++;
}
}
Log(LOG_INFO, "INFO ( %s/%s ): [%s] BMP peers usage: %u/%u\n", config.name, bmp_misc_db->log_str, peer->addr_str, peers_num, config.nfacctd_bmp_max_peers);
}
read_data:
/*
We have something coming in: let's lookup which peer is that.
FvD: To avoid starvation of the "later established" peers, we
offset the start of the search in a round-robin style.
*/
for (peer = NULL, peers_idx = 0; peers_idx < max_peers_idx; peers_idx++) {
int loc_idx = (peers_idx + peers_idx_rr) % max_peers_idx;
if (bmp_peers[loc_idx].self.fd && FD_ISSET(bmp_peers[loc_idx].self.fd, &read_descs)) {
peer = &bmp_peers[loc_idx].self;
bmpp = &bmp_peers[loc_idx];
peers_idx_rr = (peers_idx_rr + 1) % max_peers_idx;
break;
}
}
if (!peer) goto select_again;
ret = recv(peer->fd, &peer->buf.base[peer->buf.truncated_len], (peer->buf.len - peer->buf.truncated_len), 0);
peer->msglen = (ret + peer->buf.truncated_len);
if (ret <= 0) {
Log(LOG_INFO, "INFO ( %s/%s ): [%s] BMP connection reset by peer (%d).\n", config.name, bmp_misc_db->log_str, peer->addr_str, errno);
FD_CLR(peer->fd, &bkp_read_descs);
bmp_peer_close(bmpp, FUNC_TYPE_BMP);
recalc_fds = TRUE;
goto select_again;
}
else {
pkt_remaining_len = bmp_process_packet(peer->buf.base, peer->msglen, bmpp);
/* handling offset for TCP segment reassembly */
if (pkt_remaining_len) peer->buf.truncated_len = bmp_packet_adj_offset(peer->buf.base, peer->buf.len, peer->msglen,
pkt_remaining_len, peer->addr_str);
else peer->buf.truncated_len = 0;
}
}
}
