memset (ms, 0, sizeof (*ms));
ip_address_copy (&ms->address, addr);
vec_add1 (lcm->map_servers, ms[0]);
+
+ if (vec_len (lcm->map_servers) == 1)
+ lcm->do_map_server_election = 1;
}
else
{
ms = vec_elt_at_index (lcm->map_servers, i);
if (!ip_address_cmp (&ms->address, addr))
{
+ if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
+ lcm->do_map_server_election = 1;
+
vec_del1 (lcm->map_servers, i);
break;
}
return 0;
}
+int
+vnet_lisp_map_register_fallback_threshold_set (u32 value)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ if (0 == value)
+ {
+ return VNET_API_ERROR_INVALID_ARGUMENT;
+ }
+
+ lcm->max_expired_map_registers = value;
+ return 0;
+}
+
+u32
+vnet_lisp_map_register_fallback_threshold_get (void)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ return lcm->max_expired_map_registers;
+}
+
/**
* Configure Proxy-ETR
*
r->retries_num = 0;
}
-static int
-elect_map_resolver (lisp_cp_main_t * lcm)
-{
- lisp_msmr_t *mr;
-
- vec_foreach (mr, lcm->map_resolvers)
- {
- if (!mr->is_down)
- {
- ip_address_copy (&lcm->active_map_resolver, &mr->address);
- lcm->do_map_resolver_election = 0;
- return 1;
- }
- }
- return 0;
+#define foreach_msmr \
+ _(server) \
+ _(resolver)
+
+#define _(name) \
+static int \
+elect_map_ ## name (lisp_cp_main_t * lcm) \
+{ \
+ lisp_msmr_t *mr; \
+ vec_foreach (mr, lcm->map_ ## name ## s) \
+ { \
+ if (!mr->is_down) \
+ { \
+ ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
+ lcm->do_map_ ## name ## _election = 0; \
+ return 1; \
+ } \
+ } \
+ return 0; \
}
-
-static void
+foreach_msmr
+#undef _
+ static void
free_map_register_records (mapping_t * maps)
{
mapping_t *map;
return b;
}
-static int
-get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
-{
- lisp_msmr_t *mr;
- while (lcm->do_map_resolver_election
- | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
- &lcm->active_map_resolver,
- ip)))
- {
- if (0 == elect_map_resolver (lcm))
- /* all map resolvers are down */
- {
- /* restart MR checking by marking all of them up */
- vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
- return -1;
- }
- }
- return 0;
+#define _(name) \
+static int \
+get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
+{ \
+ lisp_msmr_t *mr; \
+ while (lcm->do_map_ ## name ## _election \
+ | (0 == ip_fib_get_first_egress_ip_for_dst \
+ (lcm, &lcm->active_map_ ##name, ip))) \
+ { \
+ if (0 == elect_map_ ## name (lcm)) \
+ /* all map resolvers/servers are down */ \
+ { \
+ /* restart MR/MS checking by marking all of them up */ \
+ vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
+ return -1; \
+ } \
+ } \
+ return 0; \
}
+foreach_msmr
+#undef _
/* CP output statistics */
#define foreach_lisp_cp_output_error \
_(MAP_REGISTERS_SENT, "map-registers sent") \
_(RLOC_PROBES_SENT, "rloc-probes sent")
-
static char *lisp_cp_output_error_strings[] = {
#define _(sym,string) string,
foreach_lisp_cp_output_error
f->n_vectors = 1;
vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
- hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
return 0;
}
static int
send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
{
+ pending_map_register_t *pmr;
u32 bi, map_registers_sent = 0;
vlib_buffer_t *b;
ip_address_t sloc;
vlib_frame_t *f;
u64 nonce = 0;
u32 next_index, *to_next;
- ip_address_t *ms = 0;
mapping_t *records, *r, *group, *k;
- // TODO: support multiple map servers and do election
- if (0 == vec_len (lcm->map_servers))
+ if (get_egress_map_server_ip (lcm, &sloc) < 0)
return -1;
- ms = &lcm->map_servers[0].address;
-
- if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
- {
- clib_warning ("no eligible interface address found for %U!",
- format_ip_address, &lcm->map_servers[0]);
- return -1;
- }
-
records = build_map_register_record_list (lcm);
if (!records)
return -1;
}
}
- b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, group,
- key_id, key, &bi);
+ b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
+ want_map_notif, group, key_id, key, &bi);
vec_free (group);
if (!b)
continue;
vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
- next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
+ next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
ip4_lookup_node.index : ip6_lookup_node.index;
f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
map_registers_sent++;
- hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
+ pool_get (lcm->pending_map_registers_pool, pmr);
+ memset (pmr, 0, sizeof (*pmr));
+ pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
+ hash_set (lcm->map_register_messages_by_nonce, nonce,
+ pmr - lcm->pending_map_registers_pool);
}
free_map_register_records (records);
}
a->is_free = 1;
+ pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
+
+ /* reset map-notify counter */
+ lcm->expired_map_registers = 0;
}
static mapping_t *
if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
- (u8 *) mnotif_hdr, key_id, key))
{
- clib_warning ("Map-notify auth data verification failed for nonce %lu!",
- a->nonce);
+ clib_warning ("Map-notify auth data verification failed for nonce "
+ "0x%lx!", a->nonce);
map_records_arg_free (a);
return 0;
}
lcm->lisp_pitr = 0;
lcm->flags = 0;
memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
+ memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
gid_dictionary_init (&lcm->mapping_index_by_gid);
lcm->do_map_resolver_election = 1;
+ lcm->do_map_server_election = 1;
lcm->map_request_mode = MR_MODE_DST_ONLY;
num_threads = 1 /* main thread */ + vtm->n_threads;
timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
lcm->nsh_map_index = ~0;
lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
+ lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
+ lcm->expired_map_registers = 0;
return 0;
}
/* *INDENT-ON* */
vec_foreach (pmr_index, to_be_removed)
- pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
+ pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
vec_free (to_be_removed);
}
}
}
+static int
+update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
+{
+ lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+ lisp_msmr_t *ms;
+ del_all[0] = 0;
+
+ r->time_to_expire -= dt;
+
+ if (r->time_to_expire < 0)
+ {
+ lcm->expired_map_registers++;
+
+ if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
+ {
+ ms = get_map_server (&lcm->active_map_server);
+ if (!ms)
+ {
+ clib_warning ("Map server %U not found - probably deleted "
+ "by the user recently.", format_ip_address,
+ &lcm->active_map_server);
+ }
+ else
+ {
+ clib_warning ("map server %U is unreachable, ignoring",
+ format_ip_address, &lcm->active_map_server);
+
+ /* mark current map server unavailable so it won't be
+ * elected next time */
+ ms->is_down = 1;
+ ms->last_update = vlib_time_now (lcm->vlib_main);
+ }
+
+ elect_map_server (lcm);
+
+ /* indication for deleting all pending map registers */
+ del_all[0] = 1;
+ lcm->expired_map_registers = 0;
+ return 0;
+ }
+ else
+ {
+ /* delete pending map register */
+ return 0;
+ }
+ }
+ return 1;
+}
+
static void
update_map_register (lisp_cp_main_t * lcm, f64 dt)
{
+ u32 *to_be_removed = 0, *pmr_index;
static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
static u64 mreg_sent_counter = 0;
+ pending_map_register_t *pmr;
+ u8 del_all = 0;
+
if (!lcm->is_enabled || !lcm->map_registering)
return;
+ /* *INDENT-OFF* */
+ pool_foreach (pmr, lcm->pending_map_registers_pool,
+ ({
+ if (!update_pending_map_register (pmr, dt, &del_all))
+ {
+ if (del_all)
+ break;
+ vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
+ }
+ }));
+ /* *INDENT-ON* */
+
+ if (del_all)
+ {
+ /* delete all pending map register messages so they won't
+ * trigger another map server election.. */
+ pool_free (lcm->pending_map_registers_pool);
+ hash_free (lcm->map_register_messages_by_nonce);
+
+ /* ..and trigger registration against next map server (if any) */
+ time_left = 0;
+ }
+ else
+ {
+ vec_foreach (pmr_index, to_be_removed)
+ pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
+ }
+
+ vec_free (to_be_removed);
+
time_left -= dt;
if (time_left <= 0)
{
Code Review / vpp.git / blobdiff