First Commit of Voltha-Go-Controller from Radisys

Change-Id: I8e2e908e7ab09a4fe3d86849da18b6d69dcf4ab0
diff --git a/vendor/go.uber.org/atomic/unsafe_pointer.go b/vendor/go.uber.org/atomic/unsafe_pointer.go
new file mode 100644
index 0000000..169f793
--- /dev/null
+++ b/vendor/go.uber.org/atomic/unsafe_pointer.go
@@ -0,0 +1,58 @@
+// Copyright (c) 2021 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package atomic
+
+import (
+	"sync/atomic"
+	"unsafe"
+)
+
+// UnsafePointer is an atomic wrapper around unsafe.Pointer.
+type UnsafePointer struct {
+	_ nocmp // disallow non-atomic comparison
+
+	v unsafe.Pointer
+}
+
+// NewUnsafePointer creates a new UnsafePointer.
+func NewUnsafePointer(val unsafe.Pointer) *UnsafePointer {
+	return &UnsafePointer{v: val}
+}
+
+// Load atomically loads the wrapped value.
+func (p *UnsafePointer) Load() unsafe.Pointer {
+	return atomic.LoadPointer(&p.v)
+}
+
+// Store atomically stores the passed value.
+func (p *UnsafePointer) Store(val unsafe.Pointer) {
+	atomic.StorePointer(&p.v, val)
+}
+
+// Swap atomically swaps the wrapped unsafe.Pointer and returns the old value.
+func (p *UnsafePointer) Swap(val unsafe.Pointer) (old unsafe.Pointer) {
+	return atomic.SwapPointer(&p.v, val)
+}
+
+// CAS is an atomic compare-and-swap.
+func (p *UnsafePointer) CAS(old, new unsafe.Pointer) (swapped bool) {
+	return atomic.CompareAndSwapPointer(&p.v, old, new)
+}