vppinfra: add spinlock inline functions

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

3 files changed, 7 insertions, 30 deletions

diff --git a/src/plugins/memif/device.c b/src/plugins/memif/device.c
index 446537a3792..4faeb0554f3 100644
--- a/src/plugins/memif/device.c
+++ b/src/plugins/memif/device.c
@@ -79,23 +79,6 @@ format_memif_tx_trace (u8 * s, va_list * args)
 }
 
 static_always_inline void
-memif_interface_lock (memif_if_t * mif)
-{
-  if (PREDICT_FALSE (mif->lockp != 0))
-    {
-      while (__sync_lock_test_and_set (mif->lockp, 1))
-	;
-    }
-}
-
-static_always_inline void
-memif_interface_unlock (memif_if_t * mif)
-{
-  if (PREDICT_FALSE (mif->lockp != 0))
-    *mif->lockp = 0;
-}
-
-static_always_inline void
 memif_prefetch_buffer_and_data (vlib_main_t * vm, u32 bi)
 {
   vlib_buffer_t *b = vlib_get_buffer (vm, bi);
@@ -117,7 +100,7 @@ memif_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
   u16 head, tail;
   u16 free_slots;
 
-  memif_interface_lock (mif);
+  clib_spinlock_lock_if_init (&mif->lockp);
 
   /* free consumed buffers */
 
@@ -210,7 +193,7 @@ memif_interface_tx_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
   CLIB_MEMORY_STORE_BARRIER ();
   ring->head = head;
 
-  memif_interface_unlock (mif);
+  clib_spinlock_unlock (&mif->lockp);
 
   if (n_left)
     {
diff --git a/src/plugins/memif/memif.c b/src/plugins/memif/memif.c
index 7ba67c5b898..cf8ca577d54 100644
--- a/src/plugins/memif/memif.c
+++ b/src/plugins/memif/memif.c
@@ -716,11 +716,7 @@ memif_close_if (memif_main_t * mm, memif_if_t * mif)
 	}
     }
 
-  if (mif->lockp != 0)
-    {
-      clib_mem_free ((void *) mif->lockp);
-      mif->lockp = 0;
-    }
+  clib_spinlock_free (&mif->lockp);
 
   mhash_unset (&mm->if_index_by_key, &mif->key, &mif->if_index);
   vec_free (mif->socket_filename);
@@ -783,11 +779,7 @@ memif_create_if (vlib_main_t * vm, memif_create_if_args_t * args)
   mif->connection.fd = mif->interrupt_line.fd = -1;
 
   if (tm->n_vlib_mains > 1)
-    {
-      mif->lockp = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
-					   CLIB_CACHE_LINE_BYTES);
-      memset ((void *) mif->lockp, 0, CLIB_CACHE_LINE_BYTES);
-    }
+    clib_spinlock_init (&mif->lockp);
 
   if (!args->hw_addr_set)
     {
diff --git a/src/plugins/memif/memif.h b/src/plugins/memif/memif.h
index a7a88e07b0e..f57170f8e6f 100644
--- a/src/plugins/memif/memif.h
+++ b/src/plugins/memif/memif.h
@@ -15,6 +15,8 @@
  *------------------------------------------------------------------
  */
 
+#include <vppinfra/lock.h>
+
 typedef struct
 {
   u16 version;
@@ -98,7 +100,7 @@ typedef struct
 typedef struct
 {
   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
-  volatile u32 *lockp;
+  clib_spinlock_t lockp;
   u32 flags;
 #define MEMIF_IF_FLAG_ADMIN_UP   (1 << 0)
 #define MEMIF_IF_FLAG_IS_SLAVE   (1 << 1)