diff options
Diffstat (limited to 'pkg/tcpip/transport/udp')
-rw-r--r-- | pkg/tcpip/transport/udp/endpoint.go | 47 | ||||
-rw-r--r-- | pkg/tcpip/transport/udp/endpoint_state.go | 49 |
2 files changed, 49 insertions, 47 deletions
diff --git a/pkg/tcpip/transport/udp/endpoint.go b/pkg/tcpip/transport/udp/endpoint.go index c50f5abb3..640bb8667 100644 --- a/pkg/tcpip/transport/udp/endpoint.go +++ b/pkg/tcpip/transport/udp/endpoint.go @@ -178,53 +178,6 @@ func (e *endpoint) IPTables() (iptables.IPTables, error) { return e.stack.IPTables(), nil } -// Resume implements tcpip.ResumableEndpoint.Resume. -func (e *endpoint) Resume(s *stack.Stack) { - e.stack = s - - for _, m := range e.multicastMemberships { - if err := e.stack.JoinGroup(e.netProto, m.nicID, m.multicastAddr); err != nil { - panic(err) - } - } - - if e.state != stateBound && e.state != stateConnected { - return - } - - netProto := e.effectiveNetProtos[0] - // Connect() and bindLocked() both assert - // - // netProto == header.IPv6ProtocolNumber - // - // before creating a multi-entry effectiveNetProtos. - if len(e.effectiveNetProtos) > 1 { - netProto = header.IPv6ProtocolNumber - } - - var err *tcpip.Error - if e.state == stateConnected { - e.route, err = e.stack.FindRoute(e.regNICID, e.id.LocalAddress, e.id.RemoteAddress, netProto, e.multicastLoop) - if err != nil { - panic(*err) - } - } else if len(e.id.LocalAddress) != 0 { // stateBound - if e.stack.CheckLocalAddress(e.regNICID, netProto, e.id.LocalAddress) == 0 { - panic(tcpip.ErrBadLocalAddress) - } - } - - // Our saved state had a port, but we don't actually have a - // reservation. We need to remove the port from our state, but still - // pass it to the reservation machinery. - id := e.id - e.id.LocalPort = 0 - e.id, err = e.registerWithStack(e.regNICID, e.effectiveNetProtos, id) - if err != nil { - panic(*err) - } -} - // Read reads data from the endpoint. This method does not block if // there is no data pending. func (e *endpoint) Read(addr *tcpip.FullAddress) (buffer.View, tcpip.ControlMessages, *tcpip.Error) { diff --git a/pkg/tcpip/transport/udp/endpoint_state.go b/pkg/tcpip/transport/udp/endpoint_state.go index 86db36260..bc821a96f 100644 --- a/pkg/tcpip/transport/udp/endpoint_state.go +++ b/pkg/tcpip/transport/udp/endpoint_state.go @@ -15,7 +15,9 @@ package udp import ( + "gvisor.dev/gvisor/pkg/tcpip" "gvisor.dev/gvisor/pkg/tcpip/buffer" + "gvisor.dev/gvisor/pkg/tcpip/header" "gvisor.dev/gvisor/pkg/tcpip/stack" ) @@ -64,3 +66,50 @@ func (e *endpoint) loadRcvBufSizeMax(max int) { func (e *endpoint) afterLoad() { stack.StackFromEnv.RegisterRestoredEndpoint(e) } + +// Resume implements tcpip.ResumableEndpoint.Resume. +func (e *endpoint) Resume(s *stack.Stack) { + e.stack = s + + for _, m := range e.multicastMemberships { + if err := e.stack.JoinGroup(e.netProto, m.nicID, m.multicastAddr); err != nil { + panic(err) + } + } + + if e.state != stateBound && e.state != stateConnected { + return + } + + netProto := e.effectiveNetProtos[0] + // Connect() and bindLocked() both assert + // + // netProto == header.IPv6ProtocolNumber + // + // before creating a multi-entry effectiveNetProtos. + if len(e.effectiveNetProtos) > 1 { + netProto = header.IPv6ProtocolNumber + } + + var err *tcpip.Error + if e.state == stateConnected { + e.route, err = e.stack.FindRoute(e.regNICID, e.id.LocalAddress, e.id.RemoteAddress, netProto, e.multicastLoop) + if err != nil { + panic(*err) + } + } else if len(e.id.LocalAddress) != 0 { // stateBound + if e.stack.CheckLocalAddress(e.regNICID, netProto, e.id.LocalAddress) == 0 { + panic(tcpip.ErrBadLocalAddress) + } + } + + // Our saved state had a port, but we don't actually have a + // reservation. We need to remove the port from our state, but still + // pass it to the reservation machinery. + id := e.id + e.id.LocalPort = 0 + e.id, err = e.registerWithStack(e.regNICID, e.effectiveNetProtos, id) + if err != nil { + panic(*err) + } +} |