1 files changed, 33 insertions, 3 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index 5e34e27ba..c42bb0991 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -237,6 +237,14 @@ type Timer interface {
 // network node. Or, in the case of unix endpoints, it may represent a path.
 type Address string
 
+// WithPrefix returns the address with a prefix that represents a point subnet.
+func (a Address) WithPrefix() AddressWithPrefix {
+	return AddressWithPrefix{
+		Address:   a,
+		PrefixLen: len(a) * 8,
+	}
+}
+
 // AddressMask is a bitmask for an address.
 type AddressMask string
 
@@ -1194,6 +1202,19 @@ const (
 	TCPTimeWaitReuseLoopbackOnly
 )
 
+// LingerOption is used by SetSockOpt/GetSockOpt to set/get the
+// duration for which a socket lingers before returning from Close.
+//
+// +stateify savable
+type LingerOption struct {
+	Enabled bool
+	Timeout time.Duration
+}
+
+func (*LingerOption) isGettableSocketOption() {}
+
+func (*LingerOption) isSettableSocketOption() {}
+
 // IPPacketInfo is the message structure for IP_PKTINFO.
 //
 // +stateify savable
@@ -1461,6 +1482,18 @@ type IPStats struct {
 	// MalformedFragmentsReceived is the total number of IP Fragments that were
 	// dropped due to the fragment failing validation checks.
 	MalformedFragmentsReceived *StatCounter
+
+	// IPTablesPreroutingDropped is the total number of IP packets dropped
+	// in the Prerouting chain.
+	IPTablesPreroutingDropped *StatCounter
+
+	// IPTablesInputDropped is the total number of IP packets dropped in
+	// the Input chain.
+	IPTablesInputDropped *StatCounter
+
+	// IPTablesOutputDropped is the total number of IP packets dropped in
+	// the Output chain.
+	IPTablesOutputDropped *StatCounter
 }
 
 // TCPStats collects TCP-specific stats.
@@ -1589,9 +1622,6 @@ type UDPStats struct {
 
 	// ChecksumErrors is the number of datagrams dropped due to bad checksums.
 	ChecksumErrors *StatCounter
-
-	// InvalidSourceAddress is the number of invalid sourced datagrams dropped.
-	InvalidSourceAddress *StatCounter
 }
 
 // Stats holds statistics about the networking stack.