From 5bb64ce1b8c42fcd96e44a5be05e17f34a83f840 Mon Sep 17 00:00:00 2001
From: Nayana Bidari <nybidari@google.com>
Date: Thu, 12 Nov 2020 22:55:09 -0800
Subject: Refactor SOL_SOCKET options

Store all the socket level options in a struct and call {Get/Set}SockOpt on
this struct. This will avoid implementing socket level options on all
endpoints. This CL contains implementing one socket level option for tcp and
udp endpoints.

PiperOrigin-RevId: 342203981
---
 pkg/tcpip/socketops.go | 45 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 pkg/tcpip/socketops.go

(limited to 'pkg/tcpip/socketops.go')

diff --git a/pkg/tcpip/socketops.go b/pkg/tcpip/socketops.go
new file mode 100644
index 000000000..2a6c7c7c0
--- /dev/null
+++ b/pkg/tcpip/socketops.go
@@ -0,0 +1,45 @@
+// Copyright 2020 The gVisor Authors.
+//
+// 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.
+
+package tcpip
+
+import (
+	"gvisor.dev/gvisor/pkg/sync"
+)
+
+// SocketOptions contains all the variables which store values for socket
+// level options.
+//
+// +stateify savable
+type SocketOptions struct {
+	// mu protects fields below.
+	mu               sync.Mutex `state:"nosave"`
+	broadcastEnabled bool
+}
+
+// GetBroadcast gets value for SO_BROADCAST option.
+func (so *SocketOptions) GetBroadcast() bool {
+	so.mu.Lock()
+	defer so.mu.Unlock()
+
+	return so.broadcastEnabled
+}
+
+// SetBroadcast sets value for SO_BROADCAST option.
+func (so *SocketOptions) SetBroadcast(v bool) {
+	so.mu.Lock()
+	defer so.mu.Unlock()
+
+	so.broadcastEnabled = v
+}
-- 
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