vppinfra: add spinlock inline functions

Change-Id: I86089e9bb604adfc260a111685001be1c897ce53
Signed-off-by: Damjan Marion <damarion@cisco.com>

3 files changed, 6 insertions, 13 deletions

diff --git a/src/vnet/devices/netmap/device.c b/src/vnet/devices/netmap/device.c
index 2152824f..aea9ddf4 100644
--- a/src/vnet/devices/netmap/device.c
+++ b/src/vnet/devices/netmap/device.c
@@ -105,11 +105,7 @@ netmap_interface_tx (vlib_main_t * vm,
   netmap_if_t *nif = pool_elt_at_index (nm->interfaces, rd->dev_instance);
   int cur_ring;
 
-  if (PREDICT_FALSE (nif->lockp != 0))
-    {
-      while (__sync_lock_test_and_set (nif->lockp, 1))
-	;
-    }
+  clib_spinlock_lock_if_init (&nif->lockp);
 
   cur_ring = nif->first_tx_ring;
 
@@ -165,8 +161,7 @@ netmap_interface_tx (vlib_main_t * vm,
   if (n_left < frame->n_vectors)
     ioctl (nif->fd, NIOCTXSYNC, NULL);
 
-  if (PREDICT_FALSE (nif->lockp != 0))
-    *nif->lockp = 0;
+  clib_spinlock_unlock_if_init (&nif->lockp);
 
   if (n_left)
     vlib_error_count (vm, node->node_index,
diff --git a/src/vnet/devices/netmap/netmap.c b/src/vnet/devices/netmap/netmap.c
index 3bdb442d..09afc764 100644
--- a/src/vnet/devices/netmap/netmap.c
+++ b/src/vnet/devices/netmap/netmap.c
@@ -185,11 +185,7 @@ netmap_create_if (vlib_main_t * vm, u8 * if_name, u8 * hw_addr_set,
   nif->per_interface_next_index = ~0;
 
   if (tm->n_vlib_mains > 1)
-    {
-      nif->lockp = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
-					   CLIB_CACHE_LINE_BYTES);
-      memset ((void *) nif->lockp, 0, CLIB_CACHE_LINE_BYTES);
-    }
+    clib_spinlock_init (&nif->lockp);
 
   {
     unix_file_t template = { 0 };
diff --git a/src/vnet/devices/netmap/netmap.h b/src/vnet/devices/netmap/netmap.h
index 39a94043..e04f045d 100644
--- a/src/vnet/devices/netmap/netmap.h
+++ b/src/vnet/devices/netmap/netmap.h
@@ -40,10 +40,12 @@
  * SUCH DAMAGE.
  */
 
+#include <vppinfra/lock.h>
+
 typedef struct
 {
   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  volatile u32 *lockp;
+  clib_spinlock_t lockp;
   u8 *host_if_name;
   uword if_index;
   u32 hw_if_index;