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-rw-r--r--vnet/vnet/devices/netmap/netmap.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/vnet/vnet/devices/netmap/netmap.c b/vnet/vnet/devices/netmap/netmap.c
index 653ebc203c0..7f1cadd7951 100644
--- a/vnet/vnet/devices/netmap/netmap.c
+++ b/vnet/vnet/devices/netmap/netmap.c
@@ -79,6 +79,29 @@ close_netmap_if(netmap_main_t * nm, netmap_if_t * nif)
}
int
+netmap_worker_thread_enable()
+{
+ /* if worker threads are enabled, switch to polling mode */
+ foreach_vlib_main (
+ ({
+ vlib_node_set_state(this_vlib_main, netmap_input_node.index, VLIB_NODE_STATE_POLLING);
+ }));
+
+ return 0;
+}
+
+int
+netmap_worker_thread_disable()
+{
+ foreach_vlib_main (
+ ({
+ vlib_node_set_state(this_vlib_main, netmap_input_node.index, VLIB_NODE_STATE_INTERRUPT);
+ }));
+
+ return 0;
+}
+
+int
netmap_create_if(vlib_main_t * vm, u8 * if_name, u8 * hw_addr_set,
u8 is_pipe, u8 is_master, u32 *sw_if_index)
{
@@ -202,6 +225,9 @@ netmap_create_if(vlib_main_t * vm, u8 * if_name, u8 * hw_addr_set,
if (sw_if_index)
*sw_if_index = nif->sw_if_index;
+ if (tm->n_vlib_mains > 1 && pool_elts(nm->interfaces) == 1)
+ netmap_worker_thread_enable();
+
return 0;
error:
@@ -216,6 +242,7 @@ netmap_delete_if(vlib_main_t *vm, u8 *host_if_name)
netmap_main_t *nm = &netmap_main;
netmap_if_t *nif;
uword *p;
+ vlib_thread_main_t * tm = vlib_get_thread_main();
p = mhash_get(&nm->if_index_by_host_if_name, host_if_name);
if (p == NULL) {
@@ -230,6 +257,10 @@ netmap_delete_if(vlib_main_t *vm, u8 *host_if_name)
ethernet_delete_interface(vnm, nif->hw_if_index);
close_netmap_if(nm, nif);
+
+ if (tm->n_vlib_mains > 1 && pool_elts(nm->interfaces) == 0)
+ netmap_worker_thread_disable();
+
return 0;
}
@@ -256,13 +287,6 @@ netmap_init (vlib_main_t * vm)
nm->input_cpu_count = tr->count;
}
- /* if worker threads are enabled, switch to polling mode */
- if (tm->n_vlib_mains > 1)
- foreach_vlib_main (
- ({
- vlib_node_set_state(this_vlib_main, netmap_input_node.index, VLIB_NODE_STATE_POLLING);
- }));
-
mhash_init_vec_string (&nm->if_index_by_host_if_name, sizeof (uword));
vec_validate_aligned (nm->rx_buffers, tm->n_vlib_mains - 1,