Merge release-20201208.0-43-g2e191cb3f (automated)

1 files changed, 32 insertions, 8 deletions

diff --git a/pkg/tcpip/socketops.go b/pkg/tcpip/socketops.go
index 3d29b31ee..b60a5fd76 100644
--- a/pkg/tcpip/socketops.go
+++ b/pkg/tcpip/socketops.go
@@ -16,6 +16,8 @@ package tcpip
 
 import (
 	"sync/atomic"
+
+	"gvisor.dev/gvisor/pkg/sync"
 )
 
 // SocketOptionsHandler holds methods that help define endpoint specific
@@ -77,24 +79,24 @@ type SocketOptions struct {
 
 	// These fields are accessed and modified using atomic operations.
 
-	// broadcastEnabled determines whether datagram sockets are allowed to send
-	// packets to a broadcast address.
+	// broadcastEnabled determines whether datagram sockets are allowed to
+	// send packets to a broadcast address.
 	broadcastEnabled uint32
 
-	// passCredEnabled determines whether SCM_CREDENTIALS socket control messages
-	// are enabled.
+	// passCredEnabled determines whether SCM_CREDENTIALS socket control
+	// messages are enabled.
 	passCredEnabled uint32
 
 	// noChecksumEnabled determines whether UDP checksum is disabled while
 	// transmitting for this socket.
 	noChecksumEnabled uint32
 
-	// reuseAddressEnabled determines whether Bind() should allow reuse of local
-	// address.
+	// reuseAddressEnabled determines whether Bind() should allow reuse of
+	// local address.
 	reuseAddressEnabled uint32
 
-	// reusePortEnabled determines whether to permit multiple sockets to be bound
-	// to an identical socket address.
+	// reusePortEnabled determines whether to permit multiple sockets to be
+	// bound to an identical socket address.
 	reusePortEnabled uint32
 
 	// keepAliveEnabled determines whether TCP keepalive is enabled for this
@@ -142,6 +144,13 @@ type SocketOptions struct {
 	// receiveOriginalDstAddress is used to specify if the original destination of
 	// the incoming packet should be returned as an ancillary message.
 	receiveOriginalDstAddress uint32
+
+	// mu protects the access to the below fields.
+	mu sync.Mutex `state:"nosave"`
+
+	// linger determines the amount of time the socket should linger before
+	// close. We currently implement this option for TCP socket only.
+	linger LingerOption
 }
 
 // InitHandler initializes the handler. This must be called before using the
@@ -338,3 +347,18 @@ func (*SocketOptions) GetOutOfBandInline() bool {
 // SetOutOfBandInline sets value for SO_OOBINLINE option. We currently do not
 // support disabling this option.
 func (*SocketOptions) SetOutOfBandInline(bool) {}
+
+// GetLinger gets value for SO_LINGER option.
+func (so *SocketOptions) GetLinger() LingerOption {
+	so.mu.Lock()
+	linger := so.linger
+	so.mu.Unlock()
+	return linger
+}
+
+// SetLinger sets value for SO_LINGER option.
+func (so *SocketOptions) SetLinger(linger LingerOption) {
+	so.mu.Lock()
+	so.linger = linger
+	so.mu.Unlock()
+}