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Diffstat (limited to 'pkg/sentry/socket/netstack/stack.go')
-rw-r--r--pkg/sentry/socket/netstack/stack.go197
1 files changed, 194 insertions, 3 deletions
diff --git a/pkg/sentry/socket/netstack/stack.go b/pkg/sentry/socket/netstack/stack.go
index fda0156e5..f5fa18136 100644
--- a/pkg/sentry/socket/netstack/stack.go
+++ b/pkg/sentry/socket/netstack/stack.go
@@ -20,8 +20,9 @@ import (
"gvisor.dev/gvisor/pkg/sentry/inet"
"gvisor.dev/gvisor/pkg/sentry/socket/netfilter"
"gvisor.dev/gvisor/pkg/syserr"
+ "gvisor.dev/gvisor/pkg/syserror"
+ "gvisor.dev/gvisor/pkg/tcpip"
"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"
@@ -88,6 +89,59 @@ func (s *Stack) InterfaceAddrs() map[int32][]inet.InterfaceAddr {
return nicAddrs
}
+// AddInterfaceAddr implements inet.Stack.AddInterfaceAddr.
+func (s *Stack) AddInterfaceAddr(idx int32, addr inet.InterfaceAddr) error {
+ var (
+ protocol tcpip.NetworkProtocolNumber
+ address tcpip.Address
+ )
+ switch addr.Family {
+ case linux.AF_INET:
+ if len(addr.Addr) < header.IPv4AddressSize {
+ return syserror.EINVAL
+ }
+ if addr.PrefixLen > header.IPv4AddressSize*8 {
+ return syserror.EINVAL
+ }
+ protocol = ipv4.ProtocolNumber
+ address = tcpip.Address(addr.Addr[:header.IPv4AddressSize])
+
+ case linux.AF_INET6:
+ if len(addr.Addr) < header.IPv6AddressSize {
+ return syserror.EINVAL
+ }
+ if addr.PrefixLen > header.IPv6AddressSize*8 {
+ return syserror.EINVAL
+ }
+ protocol = ipv6.ProtocolNumber
+ address = tcpip.Address(addr.Addr[:header.IPv6AddressSize])
+
+ default:
+ return syserror.ENOTSUP
+ }
+
+ protocolAddress := tcpip.ProtocolAddress{
+ Protocol: protocol,
+ AddressWithPrefix: tcpip.AddressWithPrefix{
+ Address: address,
+ PrefixLen: int(addr.PrefixLen),
+ },
+ }
+
+ // Attach address to interface.
+ if err := s.Stack.AddProtocolAddressWithOptions(tcpip.NICID(idx), protocolAddress, stack.CanBePrimaryEndpoint); err != nil {
+ return syserr.TranslateNetstackError(err).ToError()
+ }
+
+ // Add route for local network.
+ s.Stack.AddRoute(tcpip.Route{
+ Destination: protocolAddress.AddressWithPrefix.Subnet(),
+ Gateway: "", // No gateway for local network.
+ NIC: tcpip.NICID(idx),
+ })
+ return nil
+}
+
// TCPReceiveBufferSize implements inet.Stack.TCPReceiveBufferSize.
func (s *Stack) TCPReceiveBufferSize() (inet.TCPBufferSize, error) {
var rs tcp.ReceiveBufferSizeOption
@@ -144,7 +198,129 @@ func (s *Stack) SetTCPSACKEnabled(enabled bool) error {
// Statistics implements inet.Stack.Statistics.
func (s *Stack) Statistics(stat interface{}, arg string) error {
- return syserr.ErrEndpointOperation.ToError()
+ switch stats := stat.(type) {
+ case *inet.StatDev:
+ for _, ni := range s.Stack.NICInfo() {
+ if ni.Name != arg {
+ continue
+ }
+ // TODO(gvisor.dev/issue/2103) Support stubbed stats.
+ *stats = inet.StatDev{
+ // Receive section.
+ ni.Stats.Rx.Bytes.Value(), // bytes.
+ ni.Stats.Rx.Packets.Value(), // packets.
+ 0, // errs.
+ 0, // drop.
+ 0, // fifo.
+ 0, // frame.
+ 0, // compressed.
+ 0, // multicast.
+ // Transmit section.
+ ni.Stats.Tx.Bytes.Value(), // bytes.
+ ni.Stats.Tx.Packets.Value(), // packets.
+ 0, // errs.
+ 0, // drop.
+ 0, // fifo.
+ 0, // colls.
+ 0, // carrier.
+ 0, // compressed.
+ }
+ break
+ }
+ case *inet.StatSNMPIP:
+ ip := Metrics.IP
+ // TODO(gvisor.dev/issue/969) Support stubbed stats.
+ *stats = inet.StatSNMPIP{
+ 0, // Ip/Forwarding.
+ 0, // Ip/DefaultTTL.
+ ip.PacketsReceived.Value(), // InReceives.
+ 0, // Ip/InHdrErrors.
+ ip.InvalidDestinationAddressesReceived.Value(), // InAddrErrors.
+ 0, // Ip/ForwDatagrams.
+ 0, // Ip/InUnknownProtos.
+ 0, // Ip/InDiscards.
+ ip.PacketsDelivered.Value(), // InDelivers.
+ ip.PacketsSent.Value(), // OutRequests.
+ ip.OutgoingPacketErrors.Value(), // OutDiscards.
+ 0, // Ip/OutNoRoutes.
+ 0, // Support Ip/ReasmTimeout.
+ 0, // Support Ip/ReasmReqds.
+ 0, // Support Ip/ReasmOKs.
+ 0, // Support Ip/ReasmFails.
+ 0, // Support Ip/FragOKs.
+ 0, // Support Ip/FragFails.
+ 0, // Support Ip/FragCreates.
+ }
+ case *inet.StatSNMPICMP:
+ in := Metrics.ICMP.V4PacketsReceived.ICMPv4PacketStats
+ out := Metrics.ICMP.V4PacketsSent.ICMPv4PacketStats
+ // TODO(gvisor.dev/issue/969) Support stubbed stats.
+ *stats = inet.StatSNMPICMP{
+ 0, // Icmp/InMsgs.
+ Metrics.ICMP.V4PacketsSent.Dropped.Value(), // InErrors.
+ 0, // Icmp/InCsumErrors.
+ in.DstUnreachable.Value(), // InDestUnreachs.
+ in.TimeExceeded.Value(), // InTimeExcds.
+ in.ParamProblem.Value(), // InParmProbs.
+ in.SrcQuench.Value(), // InSrcQuenchs.
+ in.Redirect.Value(), // InRedirects.
+ in.Echo.Value(), // InEchos.
+ in.EchoReply.Value(), // InEchoReps.
+ in.Timestamp.Value(), // InTimestamps.
+ in.TimestampReply.Value(), // InTimestampReps.
+ in.InfoRequest.Value(), // InAddrMasks.
+ in.InfoReply.Value(), // InAddrMaskReps.
+ 0, // Icmp/OutMsgs.
+ Metrics.ICMP.V4PacketsReceived.Invalid.Value(), // OutErrors.
+ out.DstUnreachable.Value(), // OutDestUnreachs.
+ out.TimeExceeded.Value(), // OutTimeExcds.
+ out.ParamProblem.Value(), // OutParmProbs.
+ out.SrcQuench.Value(), // OutSrcQuenchs.
+ out.Redirect.Value(), // OutRedirects.
+ out.Echo.Value(), // OutEchos.
+ out.EchoReply.Value(), // OutEchoReps.
+ out.Timestamp.Value(), // OutTimestamps.
+ out.TimestampReply.Value(), // OutTimestampReps.
+ out.InfoRequest.Value(), // OutAddrMasks.
+ out.InfoReply.Value(), // OutAddrMaskReps.
+ }
+ case *inet.StatSNMPTCP:
+ tcp := Metrics.TCP
+ // RFC 2012 (updates 1213): SNMPv2-MIB-TCP.
+ *stats = inet.StatSNMPTCP{
+ 1, // RtoAlgorithm.
+ 200, // RtoMin.
+ 120000, // RtoMax.
+ (1<<64 - 1), // MaxConn.
+ tcp.ActiveConnectionOpenings.Value(), // ActiveOpens.
+ tcp.PassiveConnectionOpenings.Value(), // PassiveOpens.
+ tcp.FailedConnectionAttempts.Value(), // AttemptFails.
+ tcp.EstablishedResets.Value(), // EstabResets.
+ tcp.CurrentEstablished.Value(), // CurrEstab.
+ tcp.ValidSegmentsReceived.Value(), // InSegs.
+ tcp.SegmentsSent.Value(), // OutSegs.
+ tcp.Retransmits.Value(), // RetransSegs.
+ tcp.InvalidSegmentsReceived.Value(), // InErrs.
+ tcp.ResetsSent.Value(), // OutRsts.
+ tcp.ChecksumErrors.Value(), // InCsumErrors.
+ }
+ case *inet.StatSNMPUDP:
+ udp := Metrics.UDP
+ // TODO(gvisor.dev/issue/969) Support stubbed stats.
+ *stats = inet.StatSNMPUDP{
+ udp.PacketsReceived.Value(), // InDatagrams.
+ udp.UnknownPortErrors.Value(), // NoPorts.
+ 0, // Udp/InErrors.
+ udp.PacketsSent.Value(), // OutDatagrams.
+ udp.ReceiveBufferErrors.Value(), // RcvbufErrors.
+ 0, // Udp/SndbufErrors.
+ 0, // Udp/InCsumErrors.
+ 0, // Udp/IgnoredMulti.
+ }
+ default:
+ return syserr.ErrEndpointOperation.ToError()
+ }
+ return nil
}
// RouteTable implements inet.Stack.RouteTable.
@@ -186,7 +362,7 @@ func (s *Stack) RouteTable() []inet.Route {
}
// IPTables returns the stack's iptables.
-func (s *Stack) IPTables() (iptables.IPTables, error) {
+func (s *Stack) IPTables() (stack.IPTables, error) {
return s.Stack.IPTables(), nil
}
@@ -200,3 +376,18 @@ func (s *Stack) FillDefaultIPTables() {
func (s *Stack) Resume() {
s.Stack.Resume()
}
+
+// RegisteredEndpoints implements inet.Stack.RegisteredEndpoints.
+func (s *Stack) RegisteredEndpoints() []stack.TransportEndpoint {
+ return s.Stack.RegisteredEndpoints()
+}
+
+// CleanupEndpoints implements inet.Stack.CleanupEndpoints.
+func (s *Stack) CleanupEndpoints() []stack.TransportEndpoint {
+ return s.Stack.CleanupEndpoints()
+}
+
+// RestoreCleanupEndpoints implements inet.Stack.RestoreCleanupEndpoints.
+func (s *Stack) RestoreCleanupEndpoints(es []stack.TransportEndpoint) {
+ s.Stack.RestoreCleanupEndpoints(es)
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 07:13:36 +0000