Restructure some files in LB to src/vnet to reuse

Change-Id: Ic8b193e93ce18ca82b294816aa7ee0ef31d64bc2
Signed-off-by: Pierre Pfister <ppfister@cisco.com>
Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/src/vnet/util/refcount.c b/src/vnet/util/refcount.c
new file mode 100644
index 00000000000..a7b525d67be
--- /dev/null
+++ b/src/vnet/util/refcount.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2016 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <vnet/util/refcount.h>
+
+void __vlib_refcount_resize(vlib_refcount_per_cpu_t *per_cpu, u32 size)
+{
+  u32 *new_counter = 0, *old_counter;
+  vec_validate(new_counter, size);
+  vlib_refcount_lock(per_cpu->counter_lock);
+  memcpy(new_counter, per_cpu->counters, vec_len(per_cpu->counters)*4);
+  old_counter = per_cpu->counters;
+  per_cpu->counters = new_counter;
+  vlib_refcount_unlock(per_cpu->counter_lock);
+  CLIB_MEMORY_BARRIER();
+  vec_free(old_counter);
+}
+
+u64 vlib_refcount_get(vlib_refcount_t *r, u32 index)
+{
+  u64 count = 0;
+  vlib_thread_main_t *tm = vlib_get_thread_main ();
+  u32 thread_index;
+  for (thread_index = 0; thread_index < tm->n_vlib_mains; thread_index++) {
+    vlib_refcount_lock(r->per_cpu[thread_index].counter_lock);
+    if (index < vec_len(r->per_cpu[thread_index].counters))
+      {
+        count += r->per_cpu[thread_index].counters[index];
+      }
+    vlib_refcount_unlock(r->per_cpu[thread_index].counter_lock);
+  }
+  return count;
+}
+