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authorMatus Fabian <matfabia@cisco.com>2018-02-05 02:57:47 -0800
committerDave Wallace <dwallacelf@gmail.com>2018-02-05 16:22:29 +0000
commit1c986cb3b8a4398a04f82ff2c78838497ef8389b (patch)
tree1dabf8502f2a0e898901c7fa36cea68b869c32a2
parent5e150a06a8b291edc9427e740d441ac652f6e705 (diff)
NAT64: Run nat64-expire-worker-walk only when NAT64 is configured (VPP-1162)
Change-Id: Ic5e8d74bf5ac84cce5661de44778c89541c67636 Signed-off-by: Matus Fabian <matfabia@cisco.com> (cherry picked from commit e71eb5922a293eca36dbd323970741daaca3c5c7)
-rw-r--r--src/plugins/nat/nat64.c42
-rw-r--r--src/plugins/nat/nat64.h10
2 files changed, 48 insertions, 4 deletions
diff --git a/src/plugins/nat/nat64.c b/src/plugins/nat/nat64.c
index 571e0717826..0b7536f21a7 100644
--- a/src/plugins/nat/nat64.c
+++ b/src/plugins/nat/nat64.c
@@ -232,6 +232,8 @@ nat64_init (vlib_main_t * vm)
nm->tcp_est_timeout = SNAT_TCP_ESTABLISHED_TIMEOUT;
nm->tcp_incoming_syn_timeout = SNAT_TCP_INCOMING_SYN;
+ nm->total_enabled_count = 0;
+
/* Set up the interface address add/del callback */
cb4.function = nat64_ip4_add_del_interface_address_cb;
cb4.function_opaque = 0;
@@ -430,6 +432,12 @@ nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add)
interface->flags |= NAT_INTERFACE_FLAG_IS_INSIDE;
else
interface->flags |= NAT_INTERFACE_FLAG_IS_OUTSIDE;
+
+ nm->total_enabled_count++;
+ vlib_process_signal_event (nm->sm->vlib_main,
+ nm->nat64_expire_walk_node_index,
+ NAT64_CLEANER_RESCHEDULE, 0);
+
}
else
{
@@ -443,6 +451,8 @@ nat64_add_del_interface (u32 sw_if_index, u8 is_inside, u8 is_add)
~NAT_INTERFACE_FLAG_IS_OUTSIDE;
else
pool_put (nm->interfaces, interface);
+
+ nm->total_enabled_count--;
}
if (!is_inside)
@@ -1164,6 +1174,8 @@ VLIB_REGISTER_NODE (nat64_expire_worker_walk_node, static) = {
};
/* *INDENT-ON* */
+static vlib_node_registration_t nat64_expire_walk_node;
+
/**
* @brief Centralized process to drive per worker expire walk.
*/
@@ -1171,8 +1183,12 @@ static uword
nat64_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
vlib_frame_t * f)
{
+ nat64_main_t *nm = &nat64_main;
vlib_main_t **worker_vms = 0, *worker_vm;
int i;
+ uword event_type, *event_data = 0;
+
+ nm->nat64_expire_walk_node_index = nat64_expire_walk_node.index;
if (vec_len (vlib_mains) == 0)
vec_add1 (worker_vms, vm);
@@ -1188,8 +1204,28 @@ nat64_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
while (1)
{
- vlib_process_wait_for_event_or_clock (vm, 10.0);
- vlib_process_get_events (vm, NULL);
+ if (nm->total_enabled_count)
+ {
+ vlib_process_wait_for_event_or_clock (vm, 10.0);
+ event_type = vlib_process_get_events (vm, &event_data);
+ }
+ else
+ {
+ vlib_process_wait_for_event (vm);
+ event_type = vlib_process_get_events (vm, &event_data);
+ }
+
+ switch (event_type)
+ {
+ case ~0:
+ break;
+ case NAT64_CLEANER_RESCHEDULE:
+ break;
+ default:
+ clib_warning ("unknown event %u", event_type);
+ break;
+ }
+
for (i = 0; i < vec_len (worker_vms); i++)
{
worker_vm = worker_vms[i];
@@ -1201,8 +1237,6 @@ nat64_expire_walk_fn (vlib_main_t * vm, vlib_node_runtime_t * rt,
return 0;
}
-static vlib_node_registration_t nat64_expire_walk_node;
-
/* *INDENT-OFF* */
VLIB_REGISTER_NODE (nat64_expire_walk_node, static) = {
.function = nat64_expire_walk_fn,
diff --git a/src/plugins/nat/nat64.h b/src/plugins/nat/nat64.h
index d9d3d768e70..e2334a5ac6f 100644
--- a/src/plugins/nat/nat64.h
+++ b/src/plugins/nat/nat64.h
@@ -39,6 +39,11 @@ typedef enum
#undef _
} nat64_tcp_ses_state_t;
+enum
+{
+ NAT64_CLEANER_RESCHEDULE = 1,
+} nat64_cleaner_process_event_e;
+
typedef struct
{
ip6_address_t prefix;
@@ -99,6 +104,11 @@ typedef struct
u32 tcp_est_timeout;
u32 tcp_incoming_syn_timeout;
+ /* Total count of interfaces enabled */
+ u32 total_enabled_count;
+ /* The process node which orcherstrates the cleanup */
+ u32 nat64_expire_walk_node_index;
+
ip4_main_t *ip4_main;
snat_main_t *sm;
} nat64_main_t;