LISP: re-fetch mapping before it expires

[vpp.git] / src / vnet / lisp-cp / control.h

diff --git a/src/vnet/lisp-cp/control.h b/src/vnet/lisp-cp/control.h
index ad90b52..a3e2fc2 100644 (file)
--- a/src/vnet/lisp-cp/control.h
+++ b/src/vnet/lisp-cp/control.h
@@ -19,25 +19,30 @@
 #include <vnet/vnet.h>
 #include <vnet/lisp-cp/gid_dictionary.h>
 #include <vnet/lisp-cp/lisp_types.h>
+#include <vppinfra/timing_wheel.h>
 
 #define NUMBER_OF_RETRIES                   1
 #define PENDING_MREQ_EXPIRATION_TIME        3.0        /* seconds */
 #define PENDING_MREQ_QUEUE_LEN              5
 
-#define PENDING_MREG_EXPIRATION_TIME        3.0        /* seconds */
 #define RLOC_PROBING_INTERVAL               60.0
 
 /* when map-registration is enabled "quick registration" takes place first.
    In this mode ETR sends map-register messages at an increased frequency
    until specified message count is reached */
-#define QUICK_MAP_REGISTER_MSG_COUNT        3
+#define QUICK_MAP_REGISTER_MSG_COUNT        5
 #define QUICK_MAP_REGISTER_INTERVAL         3.0
 
 /* normal map-register period */
 #define MAP_REGISTER_INTERVAL               60.0
 
-/* 15 minutes */
-#define MAP_REGISTER_DEFAULT_TTL            900
+/* how many tries until next map-server election */
+#define MAX_EXPIRED_MAP_REGISTERS_DEFAULT   3
+
+#define PENDING_MREG_EXPIRATION_TIME        3.0        /* seconds */
+
+/* 24 hours */
+#define MAP_REGISTER_DEFAULT_TTL            86400
 
 typedef struct
 {
@@ -50,6 +55,11 @@ typedef struct
   u8 to_be_removed;
 } pending_map_request_t;
 
+typedef struct
+{
+  f64 time_to_expire;
+} pending_map_register_t;
+
 typedef struct
 {
   gid_address_t leid;
@@ -124,6 +134,14 @@ typedef struct
   u32 bd;
 } lisp_l2_arp_key_t;
 
+typedef struct
+{
+  u64 nonce;
+  u8 is_rloc_probe;
+  mapping_t *mappings;
+  volatile u8 is_free;
+} map_records_arg_t;
+
 typedef struct
 {
   u32 flags;
@@ -171,6 +189,9 @@ typedef struct
   /* pool of pending map requests */
   pending_map_request_t *pending_map_requests_pool;
 
+  /* pool of pending map registers */
+  pending_map_register_t *pending_map_registers_pool;
+
   /* hash map of sent map register messages */
   uword *map_register_messages_by_nonce;
 
@@ -185,8 +206,10 @@ typedef struct
    * since the vector may be modified during request resend/retry procedure
    * and break things :-) */
   ip_address_t active_map_resolver;
+  ip_address_t active_map_server;
 
   u8 do_map_resolver_election;
+  u8 do_map_server_election;
 
   /* map-request  locator set index */
   u32 mreq_itr_rlocs;
@@ -226,6 +249,16 @@ typedef struct
   /* timing wheel for mappping timeouts */
   timing_wheel_t wheel;
 
+  /** Per thread pool of records shared with thread0 */
+  map_records_arg_t **map_records_args_pool;
+
+  /* TTL used for all mappings when registering */
+  u32 map_register_ttl;
+
+  /* control variables for map server election */
+  u32 max_expired_map_registers;
+  u32 expired_map_registers;
+
   /* commodity */
   ip4_main_t *im4;
   ip6_main_t *im6;
@@ -288,13 +321,6 @@ typedef struct
   u8 key_id;
 } vnet_lisp_add_del_mapping_args_t;
 
-typedef struct
-{
-  u64 nonce;
-  u8 is_rloc_probe;
-  mapping_t *mappings;
-} map_records_arg_t;
-
 int
 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
                             u32 * map_index);
@@ -303,9 +329,11 @@ vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
                                 u32 * map_index_result);
 
 int
-vnet_lisp_add_del_mapping (gid_address_t * deid, locator_t * dlocs, u8 action,
-                          u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
-                          u32 * res_map_index);
+vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
+                      locator_t * rlocs, u32 * res_map_index,
+                      u8 * is_changed);
+
+int vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index);
 
 typedef struct
 {
@@ -357,6 +385,10 @@ int vnet_lisp_add_del_l2_arp_entry (gid_address_t * key, u8 * mac, u8 is_add);
 u32 *vnet_lisp_l2_arp_bds_get (void);
 lisp_api_l2_arp_entry_t *vnet_lisp_l2_arp_entries_get_by_bd (u32 bd);
 int vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add);
+int vnet_lisp_map_register_set_ttl (u32 ttl);
+u32 vnet_lisp_map_register_get_ttl (void);
+int vnet_lisp_map_register_fallback_threshold_set (u32 value);
+u32 vnet_lisp_map_register_fallback_threshold_get (void);
 
 map_records_arg_t *parse_map_reply (vlib_buffer_t * b);