diff options
| author | gVisor bot <gvisor-bot@google.com> | 2020-01-04 02:40:53 +0000 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-01-04 02:40:53 +0000 |
| commit | 7d588a53e93a0691f4b52d1b01d37af807205dc3 (patch) | |
| tree | 639cb9e6e087fdc3d433583f0ea198c622a51d7e | |
| parent | 4e90510074f4718aa3fd666a26f19c3ece6c9e83 (diff) | |
| parent | 83ab47e87badd8b46f784739903361d9f824fa2c (diff) | |
Merge release-20191213.0-59-g83ab47e (automated)
| -rwxr-xr-x | pkg/tcpip/stack/ndp.go | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/pkg/tcpip/stack/ndp.go b/pkg/tcpip/stack/ndp.go index d9ab59336..ba6a57e6f 100755 --- a/pkg/tcpip/stack/ndp.go +++ b/pkg/tcpip/stack/ndp.go @@ -1028,22 +1028,24 @@ func (ndp *ndpState) handleAutonomousPrefixInformation(pi header.NDPPrefixInform return } - // Only attempt to generate an interface-specific IID if we have a valid - // link address. - // - // TODO(b/141011931): Validate a LinkEndpoint's link address - // (provided by LinkEndpoint.LinkAddress) before reaching this - // point. - linkAddr := ndp.nic.linkEP.LinkAddress() - if !header.IsValidUnicastEthernetAddress(linkAddr) { - return - } + addrBytes := []byte(prefix.ID()) + if oIID := ndp.nic.stack.opaqueIIDOpts; oIID.NICNameFromID != nil { + addrBytes = header.AppendOpaqueInterfaceIdentifier(addrBytes[:header.IIDOffsetInIPv6Address], prefix, oIID.NICNameFromID(ndp.nic.ID()), 0 /* dadCounter */, oIID.SecretKey) + } else { + // Only attempt to generate an interface-specific IID if we have a valid + // link address. + // + // TODO(b/141011931): Validate a LinkEndpoint's link address (provided by + // LinkEndpoint.LinkAddress) before reaching this point. + linkAddr := ndp.nic.linkEP.LinkAddress() + if !header.IsValidUnicastEthernetAddress(linkAddr) { + return + } - // Generate an address within prefix from the modified EUI-64 of ndp's - // NIC's Ethernet MAC address. - addrBytes := make([]byte, header.IPv6AddressSize) - copy(addrBytes[:header.IIDOffsetInIPv6Address], prefix.ID()[:header.IIDOffsetInIPv6Address]) - header.EthernetAdddressToModifiedEUI64IntoBuf(linkAddr, addrBytes[header.IIDOffsetInIPv6Address:]) + // Generate an address within prefix from the modified EUI-64 of ndp's NIC's + // Ethernet MAC address. + header.EthernetAdddressToModifiedEUI64IntoBuf(linkAddr, addrBytes[header.IIDOffsetInIPv6Address:]) + } addr := tcpip.Address(addrBytes) addrWithPrefix := tcpip.AddressWithPrefix{ Address: addr, |