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BMP: Proper reconfiguration and protocol status

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Based on patches from Michal Zagorski <mzagorsk@akamai.com> co-authored
with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
This commit is contained in:
Ondrej Zajicek 2023-05-31 17:41:53 +02:00
parent 1e45e2aa4e
commit e8be7a7080
2 changed files with 59 additions and 3 deletions
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61
proto/bmp/bmp.c
View File

@ -843,6 +843,7 @@ bmp_startup(struct bmp_proto *p)
{
ASSERT(!p->started);
p->started = true;
p->sock_err = 0;
TRACE(D_EVENTS, "BMP session established");
@ -931,6 +932,8 @@ bmp_sock_err(sock *sk, int err)
{
struct bmp_proto *p = sk->data;
p->sock_err = err;
if (err)
TRACE(D_EVENTS, "Connection lost (%M)", err);
else
@ -987,6 +990,7 @@ bmp_init(struct proto_config *CF)
struct proto *P = proto_new(CF);
struct bmp_proto *p = (void *) P;
struct bmp_config *cf = (void *) CF;
p->cf = cf;
p->local_addr = cf->local_addr;
p->station_ip = cf->station_ip;
@ -1020,6 +1024,7 @@ bmp_start(struct proto *P)
init_list(&p->tx_queue);
init_list(&p->rt_table_in_pre_policy.update_msg_queue);
p->started = false;
p->sock_err = 0;
tm_start(p->connect_retry_timer, CONNECT_INIT_TIME);
@ -1039,6 +1044,7 @@ bmp_shutdown(struct proto *P)
p->started = false;
}
p->sock_err = 0;
g_bmp = NULL;
return PS_DOWN;
@ -1048,15 +1054,62 @@ static int
bmp_reconfigure(struct proto *P, struct proto_config *CF)
{
struct bmp_proto *p = (void *) P;
const struct bmp_config *cf = (void *) CF;
const struct bmp_config *new = (void *) CF;
const struct bmp_config *old = p->cf;
log(L_WARN "Reconfiguring BMP is not supported");
int needs_restart = bstrcmp(new->sys_descr, old->sys_descr)
|| bstrcmp(new->sys_name, old->sys_name)
|| !ipa_equal(new->local_addr, old->local_addr)
|| !ipa_equal(new->station_ip, old->station_ip)
|| (new->station_port != old->station_port)
|| (new->monitoring_rib_in_pre_policy != old->monitoring_rib_in_pre_policy);
p->cf = cf;
/* If there is any change, restart the protocol */
if (needs_restart)
return 0;
/* We must update our copy of configuration ptr */
p->cf = new;
return 1;
}
static void
bmp_get_status(struct proto *P, byte *buf)
{
struct bmp_proto *p = (void *) P;
if (P->proto_state == PS_DOWN)
bsprintf(buf, "Down");
else
{
const char *state = !p->started ? (!p->sk ? "Idle" : "Connect") : "Established";
if (!p->sock_err)
bsprintf(buf, "%s", state);
else
bsprintf(buf, "%-14s%s %M", state, "Error:", p->sock_err);
}
}
static void
bmp_show_proto_info(struct proto *P)
{
struct bmp_proto *p = (void *) P;
if (P->proto_state != PS_DOWN)
{
cli_msg(-1006, " %-19s %I", "Station address:", p->station_ip);
cli_msg(-1006, " %-19s %u", "Station port:", p->station_port);
if (!ipa_zero(p->local_addr))
cli_msg(-1006, " %-19s %I", "Local address:", p->local_addr);
if (p->sock_err)
cli_msg(-1006, " %-19s %M", "Last error:", p->sock_err);
}
}
struct protocol proto_bmp = {
.name = "BMP",
.template = "bmp%d",
@ -1068,6 +1121,8 @@ struct protocol proto_bmp = {
.start = bmp_start,
.shutdown = bmp_shutdown,
.reconfigure = bmp_reconfigure,
.get_status = bmp_get_status,
.show_proto_info = bmp_show_proto_info,
};
void

1
proto/bmp/bmp.h
View File

@ -75,6 +75,7 @@ struct bmp_proto {
timer *connect_retry_timer; // Timer for retrying connection to the BMP collector
struct rt_table_info rt_table_in_pre_policy; // Pre-policy route import table
bool started; // Flag that stores running status of BMP instance
int sock_err; // Last socket error code
};