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authorFilip Tehlar <ftehlar@cisco.com>2016-11-28 10:23:31 +0100
committerFlorin Coras <florin.coras@gmail.com>2016-12-07 16:31:13 +0000
commit9677a944d5188f10188657bf627301b239fe1da7 (patch)
tree159dec84e32ed36950bf1c9f3f9de2c021a0a380 /vnet
parent496e127c58466969ddcab65b6f67bb2eb20a70bb (diff)
LISP mapping timers
Change-Id: I4cd600189e936b07b628371df2f7fe2e2dc3e63d Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
Diffstat (limited to 'vnet')
-rw-r--r--vnet/vnet/lisp-cp/control.c60
-rw-r--r--vnet/vnet/lisp-cp/control.h3
-rw-r--r--vnet/vnet/lisp-cp/lisp_types.h1
3 files changed, 63 insertions, 1 deletions
diff --git a/vnet/vnet/lisp-cp/control.c b/vnet/vnet/lisp-cp/control.c
index 40ce6b0c4da..a2172bf3203 100644
--- a/vnet/vnet/lisp-cp/control.c
+++ b/vnet/vnet/lisp-cp/control.c
@@ -1155,6 +1155,12 @@ remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
vec_free (a.eids_to_be_deleted);
}
+static void
+mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
+{
+ timing_wheel_delete (&lcm->wheel, mi);
+}
+
/**
* Adds/removes/updates mapping. Does not program forwarding.
*
@@ -1247,6 +1253,7 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
m_args->action = action;
m_args->locator_set_index = ls_index;
m_args->is_static = is_static;
+ m_args->ttl = ttl;
vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
if (res_map_index)
@@ -1274,6 +1281,10 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
/* delete locator set */
vnet_lisp_add_del_locator_set (ls_args, 0);
+ /* delete timer associated to the mapping if any */
+ if (old_map->timer_set)
+ mapping_delete_timer (lcm, mi);
+
/* return old mapping index */
if (res_map_index)
res_map_index[0] = mi;
@@ -4067,6 +4078,33 @@ format_lisp_cp_input_trace (u8 * s, va_list * args)
return s;
}
+static void
+remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
+{
+ mapping_t *m;
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+ lisp_add_del_adjacency (lcm, 0, &m->eid, 0 /* is_add */ );
+ vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
+ 0 /* is_static */ , 0);
+ mapping_delete_timer (lcm, mi);
+}
+
+static void
+mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
+ f64 expiration_time)
+{
+ mapping_t *m;
+ u64 now = clib_cpu_time_now ();
+ u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
+ u64 exp_clock_time = now + expiration_time * cpu_cps;
+
+ m = pool_elt_at_index (lcm->mapping_pool, mi);
+
+ m->timer_set = 1;
+ timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
+}
+
void *
process_map_reply (void *arg)
{
@@ -4124,7 +4162,11 @@ process_map_reply (void *arg)
/* try to program forwarding only if mapping saved or updated */
if ((u32) ~ 0 != dst_map_index)
- lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1);
+ {
+ lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1);
+ if ((u32) ~ 0 != ttl)
+ mapping_start_expiration_timer (lcm, dst_map_index, ttl * 60);
+ }
vec_free (locators);
}
@@ -4568,6 +4610,8 @@ lisp_cp_init (vlib_main_t * vm)
udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
lisp_cp_input_node.index, 0 /* is_ip4 */ );
+ u64 now = clib_cpu_time_now ();
+ timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
return 0;
}
@@ -4734,6 +4778,7 @@ static uword
send_map_resolver_service (vlib_main_t * vm,
vlib_node_runtime_t * rt, vlib_frame_t * f)
{
+ u32 *expired = 0;
f64 period = 2.0;
pending_map_request_t *pmr;
lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
@@ -4760,6 +4805,19 @@ send_map_resolver_service (vlib_main_t * vm,
update_map_register (lcm, period);
update_rloc_probing (lcm, period);
+
+ u64 now = clib_cpu_time_now ();
+
+ expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
+ if (vec_len (expired) > 0)
+ {
+ u32 *mi = 0;
+ vec_foreach (mi, expired)
+ {
+ remove_expired_mapping (lcm, mi[0]);
+ }
+ _vec_len (expired) = 0;
+ }
}
/* unreachable */
diff --git a/vnet/vnet/lisp-cp/control.h b/vnet/vnet/lisp-cp/control.h
index 14b54606079..71bb39afed5 100644
--- a/vnet/vnet/lisp-cp/control.h
+++ b/vnet/vnet/lisp-cp/control.h
@@ -184,6 +184,9 @@ typedef struct
/* enable/disable rloc-probing */
u8 rloc_probing;
+ /* timing wheel for mappping timeouts */
+ timing_wheel_t wheel;
+
/* commodity */
ip4_main_t *im4;
ip6_main_t *im6;
diff --git a/vnet/vnet/lisp-cp/lisp_types.h b/vnet/vnet/lisp-cp/lisp_types.h
index 7df0e653f52..1a3cfdefa0d 100644
--- a/vnet/vnet/lisp-cp/lisp_types.h
+++ b/vnet/vnet/lisp-cp/lisp_types.h
@@ -321,6 +321,7 @@ typedef struct
u8 is_static;
u8 *key;
lisp_key_type_t key_id;
+ u8 timer_set;
} mapping_t;
uword