Support IPV6_RECVPKTINFO on UDP sockets

PiperOrigin-RevId: 397631833

1 files changed, 14 insertions, 0 deletions

diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index a9ce148b9..c5e896295 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -451,6 +451,12 @@ type ControlMessages struct {
 	// PacketInfo holds interface and address data on an incoming packet.
 	PacketInfo IPPacketInfo
 
+	// HasIPv6PacketInfo indicates whether IPv6PacketInfo is set.
+	HasIPv6PacketInfo bool
+
+	// IPv6PacketInfo holds interface and address data on an incoming packet.
+	IPv6PacketInfo IPv6PacketInfo
+
 	// HasOriginalDestinationAddress indicates whether OriginalDstAddress is
 	// set.
 	HasOriginalDstAddress bool
@@ -1164,6 +1170,14 @@ type IPPacketInfo struct {
 	DestinationAddr Address
 }
 
+// IPv6PacketInfo is the message structure for IPV6_PKTINFO.
+//
+// +stateify savable
+type IPv6PacketInfo struct {
+	Addr Address
+	NIC  NICID
+}
+
 // SendBufferSizeOption is used by stack.(Stack*).Option/SetOption to
 // get/set the default, min and max send buffer sizes.
 type SendBufferSizeOption struct {