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

1 files changed, 7 insertions, 0 deletions

diff --git a/pkg/tcpip/transport/packet/endpoint.go b/pkg/tcpip/transport/packet/endpoint.go
index 31831a6d8..3bff3755a 100644
--- a/pkg/tcpip/transport/packet/endpoint.go
+++ b/pkg/tcpip/transport/packet/endpoint.go
@@ -89,6 +89,9 @@ type endpoint struct {
 	// lastErrorMu protects lastError.
 	lastErrorMu sync.Mutex   `state:"nosave"`
 	lastError   *tcpip.Error `state:".(string)"`
+
+	// ops is used to get socket level options.
+	ops tcpip.SocketOptions
 }
 
 // NewEndpoint returns a new packet endpoint.
@@ -549,3 +552,7 @@ func (ep *endpoint) Stats() tcpip.EndpointStats {
 }
 
 func (ep *endpoint) SetOwner(owner tcpip.PacketOwner) {}
+
+func (ep *endpoint) SocketOptions() *tcpip.SocketOptions {
+	return &ep.ops
+}