device: do not allow get to run while set runs

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2021-01-28 15:26:22 +01:00
parent 34c047c762
commit 6a128dde71
2 changed files with 7 additions and 3 deletions
--- a/device/device.go
+++ b/device/device.go
@@ -23,7 +23,6 @@ type Device struct {
 	isUp     AtomicBool // device is (going) up
 	isClosed AtomicBool // device is closed? (acting as guard)
 	log      *Logger
-	ipcSetMu sync.Mutex // serializes UAPI set operations

 	// synchronized resources (locks acquired in order)

@@ -89,6 +88,8 @@ type Device struct {
 		device tun.Device
 		mtu    int32
 	}
+
+	ipcMutex sync.RWMutex
 }

 // An encryptionQueue is a channel of QueueOutboundElements awaiting encryption.