1 files changed, 57 insertions, 0 deletions
diff --git a/pkg/sentry/socket/epsocket/stack.go b/pkg/sentry/socket/epsocket/stack.go
index 8fe489c0e..7cf7ff735 100644
--- a/pkg/sentry/socket/epsocket/stack.go
+++ b/pkg/sentry/socket/epsocket/stack.go
@@ -18,7 +18,10 @@ import (
 	"gvisor.dev/gvisor/pkg/abi/linux"
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/sentry/inet"
+	"gvisor.dev/gvisor/pkg/sentry/socket/netfilter"
 	"gvisor.dev/gvisor/pkg/syserr"
+	"gvisor.dev/gvisor/pkg/tcpip/header"
+	"gvisor.dev/gvisor/pkg/tcpip/iptables"
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv4"
 	"gvisor.dev/gvisor/pkg/tcpip/network/ipv6"
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
@@ -143,3 +146,57 @@ func (s *Stack) SetTCPSACKEnabled(enabled bool) error {
 func (s *Stack) Statistics(stat interface{}, arg string) error {
 	return syserr.ErrEndpointOperation.ToError()
 }
+
+// RouteTable implements inet.Stack.RouteTable.
+func (s *Stack) RouteTable() []inet.Route {
+	var routeTable []inet.Route
+
+	for _, rt := range s.Stack.GetRouteTable() {
+		var family uint8
+		switch len(rt.Destination.ID()) {
+		case header.IPv4AddressSize:
+			family = linux.AF_INET
+		case header.IPv6AddressSize:
+			family = linux.AF_INET6
+		default:
+			log.Warningf("Unknown network protocol in route %+v", rt)
+			continue
+		}
+
+		routeTable = append(routeTable, inet.Route{
+			Family: family,
+			DstLen: uint8(rt.Destination.Prefix()), // The CIDR prefix for the destination.
+
+			// Always return unspecified protocol since we have no notion of
+			// protocol for routes.
+			Protocol: linux.RTPROT_UNSPEC,
+			// Set statically to LINK scope for now.
+			//
+			// TODO(gvisor.dev/issue/595): Set scope for routes.
+			Scope: linux.RT_SCOPE_LINK,
+			Type:  linux.RTN_UNICAST,
+
+			DstAddr:         []byte(rt.Destination.ID()),
+			OutputInterface: int32(rt.NIC),
+			GatewayAddr:     []byte(rt.Gateway),
+		})
+	}
+
+	return routeTable
+}
+
+// IPTables returns the stack's iptables.
+func (s *Stack) IPTables() (iptables.IPTables, error) {
+	return s.Stack.IPTables(), nil
+}
+
+// FillDefaultIPTables sets the stack's iptables to the default tables, which
+// allow and do not modify all traffic.
+func (s *Stack) FillDefaultIPTables() {
+	netfilter.FillDefaultIPTables(s.Stack)
+}
+
+// Resume implements inet.Stack.Resume.
+func (s *Stack) Resume() {
+	s.Stack.Resume()
+}