LISP: re-fetch mapping before it expires
Change-Id: I0581a1bddad55d8d573c546ec84b0b2760abab3d
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
index ac04814..d7d3cb8 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.c
@@ -193,12 +193,15 @@
* @param[in] src_fib_index The index/ID of the SRC FIB
* @param[in] src_prefix Source IP prefix.
* @param[in] src_dpo The DPO the route will link to.
+ *
+ * @return fib index of the inserted prefix
*/
-static void
+static fib_node_index_t
ip_src_fib_add_route_w_dpo (u32 src_fib_index,
const ip_prefix_t * src_prefix,
const dpo_id_t * src_dpo)
{
+ fib_node_index_t fei = ~0;
fib_prefix_t src_fib_prefix;
ip_prefix_to_fib_prefix (src_prefix, &src_fib_prefix);
@@ -213,11 +216,13 @@
if (FIB_NODE_INDEX_INVALID == src_fei ||
!fib_entry_is_sourced (src_fei, FIB_SOURCE_LISP))
{
- fib_table_entry_special_dpo_add (src_fib_index,
- &src_fib_prefix,
- FIB_SOURCE_LISP,
- FIB_ENTRY_FLAG_EXCLUSIVE, src_dpo);
+ fei = fib_table_entry_special_dpo_add (src_fib_index,
+ &src_fib_prefix,
+ FIB_SOURCE_LISP,
+ FIB_ENTRY_FLAG_EXCLUSIVE,
+ src_dpo);
}
+ return fei;
}
static fib_route_path_t *
@@ -262,7 +267,7 @@
* @param[in] paths The paths from which to construct the
* load balance
*/
-static void
+static fib_node_index_t
ip_src_fib_add_route (u32 src_fib_index,
const ip_prefix_t * src_prefix,
const lisp_fwd_path_t * paths)
@@ -274,10 +279,11 @@
rpaths = lisp_gpe_mk_fib_paths (paths);
- fib_table_entry_update (src_fib_index,
- &src_fib_prefix,
- FIB_SOURCE_LISP, FIB_ENTRY_FLAG_NONE, rpaths);
+ fib_node_index_t fib_entry_index =
+ fib_table_entry_update (src_fib_index, &src_fib_prefix, FIB_SOURCE_LISP,
+ FIB_ENTRY_FLAG_NONE, rpaths);
vec_free (rpaths);
+ return fib_entry_index;
}
static void
@@ -311,9 +317,11 @@
}
}
-static void
+static index_t
create_fib_entries (lisp_gpe_fwd_entry_t * lfe)
{
+ fib_node_index_t fi;
+ fib_entry_t *fe;
lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
dpo_proto_t dproto;
ip_prefix_t ippref;
@@ -361,13 +369,15 @@
dpo_copy (&dpo, drop_dpo_get (dproto));
break;
}
- ip_src_fib_add_route_w_dpo (lfe->src_fib_index, &ippref, &dpo);
+ fi = ip_src_fib_add_route_w_dpo (lfe->src_fib_index, &ippref, &dpo);
dpo_reset (&dpo);
}
else
{
- ip_src_fib_add_route (lfe->src_fib_index, &ippref, lfe->paths);
+ fi = ip_src_fib_add_route (lfe->src_fib_index, &ippref, lfe->paths);
}
+ fe = fib_entry_get (fi);
+ return fe->fe_lb.dpoi_index;
}
static void
@@ -546,7 +556,7 @@
lfe->action = a->action;
}
- create_fib_entries (lfe);
+ lfe->dpoi_index = create_fib_entries (lfe);
return (0);
}
@@ -793,6 +803,7 @@
lisp_l2_fib_add_del_entry (lfe->l2.eid_bd_index,
fid_addr_mac (&lfe->key->lcl),
fid_addr_mac (&lfe->key->rmt), &dpo, 1);
+ lfe->dpoi_index = dpo.dpoi_index;
dpo_reset (&dpo);
}
@@ -1538,6 +1549,29 @@
return entries;
}
+int
+vnet_lisp_gpe_get_fwd_stats (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
+ vlib_counter_t * c)
+{
+ lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
+ lisp_gpe_fwd_entry_t *lfe;
+ lisp_gpe_fwd_entry_key_t unused;
+
+ lfe = find_fwd_entry (lgm, a, &unused);
+ if (NULL == lfe)
+ return -1;
+
+ if (LISP_GPE_FWD_ENTRY_TYPE_NEGATIVE == lfe->type)
+ return -1;
+
+ if (~0 == lfe->dpoi_index)
+ return -1;
+
+ vlib_get_combined_counter (&load_balance_main.lbm_to_counters,
+ lfe->dpoi_index, c);
+ return 0;
+}
+
VLIB_INIT_FUNCTION (lisp_gpe_fwd_entry_init);
/*
diff --git a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.h b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.h
index 1580351..dfdb8b9 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.h
+++ b/src/vnet/lisp-gpe/lisp_gpe_fwd_entry.h
@@ -198,6 +198,12 @@
*/
negative_fwd_actions_e action;
};
+
+ /**
+ * used for getting load balance statistics
+ */
+ index_t dpoi_index;
+
} lisp_gpe_fwd_entry_t;
extern int
@@ -219,6 +225,10 @@
u32 fwd_entry_index);
extern u32 *vnet_lisp_gpe_get_fwd_entry_vnis (void);
+int
+vnet_lisp_gpe_get_fwd_stats (vnet_lisp_gpe_add_del_fwd_entry_args_t * a,
+ vlib_counter_t * c);
+
#endif
/*
diff --git a/src/vnet/lisp-gpe/lisp_gpe_sub_interface.c b/src/vnet/lisp-gpe/lisp_gpe_sub_interface.c
index 7146b38..b234d9d 100644
--- a/src/vnet/lisp-gpe/lisp_gpe_sub_interface.c
+++ b/src/vnet/lisp-gpe/lisp_gpe_sub_interface.c
@@ -192,7 +192,7 @@
lisp_gpe_sub_interface_unset_table (l3s->sw_if_index,
l3s->eid_table_id);
- lisp_gpe_tenant_l3_iface_unlock (clib_net_to_host_u32 (l3s->key->vni));
+ lisp_gpe_tenant_l3_iface_unlock (l3s->key->vni);
vnet_sw_interface_set_flags (vnet_get_main (), l3s->sw_if_index, 0);
vnet_delete_sub_interface (l3s->sw_if_index);