diff options
Diffstat (limited to 'pkg/sentry/socket/netstack/stack.go')
| -rw-r--r-- | pkg/sentry/socket/netstack/stack.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/pkg/sentry/socket/netstack/stack.go b/pkg/sentry/socket/netstack/stack.go index 3fceb4cd5..360b270c1 100644 --- a/pkg/sentry/socket/netstack/stack.go +++ b/pkg/sentry/socket/netstack/stack.go @@ -24,6 +24,7 @@ import ( "gvisor.dev/gvisor/pkg/syserr" "gvisor.dev/gvisor/pkg/tcpip" "gvisor.dev/gvisor/pkg/tcpip/header" + "gvisor.dev/gvisor/pkg/tcpip/link/dummy" "gvisor.dev/gvisor/pkg/tcpip/network/ipv4" "gvisor.dev/gvisor/pkg/tcpip/network/ipv6" "gvisor.dev/gvisor/pkg/tcpip/stack" @@ -71,6 +72,17 @@ func (s *Stack) Interfaces() map[int32]inet.Interface { return is } +func (s *Stack) AddDummyInterface(name string) (int32, error) { + var idx tcpip.NICID = s.nextInterfaceIndex() + + dummyEP := dummy.New() + if err := s.Stack.CreateNICWithOptions(idx, dummyEP, stack.NICOptions{Name: name}); err != nil { + return -1, syserr.TranslateNetstackError(err).ToError() + } + + return int32(idx), nil +} + // RemoveInterface implements inet.Stack.RemoveInterface. func (s *Stack) RemoveInterface(idx int32) error { nic := tcpip.NICID(idx) @@ -146,6 +158,18 @@ func convertAddr(addr inet.InterfaceAddr) (tcpip.ProtocolAddress, error) { return protocolAddress, nil } +func (s *Stack) nextInterfaceIndex() tcpip.NICID { + var maxIdx tcpip.NICID = 0 + + for id, _ := range s.Stack.NICInfo() { + if id > maxIdx { + maxIdx = id + } + } + + return maxIdx + 1 +} + // AddInterfaceAddr implements inet.Stack.AddInterfaceAddr. func (s *Stack) AddInterfaceAddr(idx int32, addr inet.InterfaceAddr) error { protocolAddress, err := convertAddr(addr) |