5 files changed, 22 insertions, 14 deletions
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index a1efd8d55..e31464c9b 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -2029,8 +2029,8 @@ func (e *endpoint) GetRemoteAddress() (tcpip.FullAddress, *tcpip.Error) {
 
 // HandlePacket is called by the stack when new packets arrive to this transport
 // endpoint.
-func (e *endpoint) HandlePacket(r *stack.Route, id stack.TransportEndpointID, vv buffer.VectorisedView) {
-	s := newSegment(r, id, vv)
+func (e *endpoint) HandlePacket(r *stack.Route, id stack.TransportEndpointID, pkt tcpip.PacketBuffer) {
+	s := newSegment(r, id, pkt)
 	if !s.parse() {
 		e.stack.Stats().MalformedRcvdPackets.Increment()
 		e.stack.Stats().TCP.InvalidSegmentsReceived.Increment()
@@ -2065,7 +2065,7 @@ func (e *endpoint) HandlePacket(r *stack.Route, id stack.TransportEndpointID, vv
 }
 
 // HandleControlPacket implements stack.TransportEndpoint.HandleControlPacket.
-func (e *endpoint) HandleControlPacket(id stack.TransportEndpointID, typ stack.ControlType, extra uint32, vv buffer.VectorisedView) {
+func (e *endpoint) HandleControlPacket(id stack.TransportEndpointID, typ stack.ControlType, extra uint32, pkt tcpip.PacketBuffer) {
 	switch typ {
 	case stack.ControlPacketTooBig:
 		e.sndBufMu.Lock()
diff --git a/pkg/tcpip/transport/tcp/forwarder.go b/pkg/tcpip/transport/tcp/forwarder.go
index 63666f0b3..4983bca81 100644
--- a/pkg/tcpip/transport/tcp/forwarder.go
+++ b/pkg/tcpip/transport/tcp/forwarder.go
@@ -18,7 +18,6 @@ import (
 	"sync"
 
 	"gvisor.dev/gvisor/pkg/tcpip"
-	"gvisor.dev/gvisor/pkg/tcpip/buffer"
 	"gvisor.dev/gvisor/pkg/tcpip/header"
 	"gvisor.dev/gvisor/pkg/tcpip/seqnum"
 	"gvisor.dev/gvisor/pkg/tcpip/stack"
@@ -63,8 +62,8 @@ func NewForwarder(s *stack.Stack, rcvWnd, maxInFlight int, handler func(*Forward
 //
 // This function is expected to be passed as an argument to the
 // stack.SetTransportProtocolHandler function.
-func (f *Forwarder) HandlePacket(r *stack.Route, id stack.TransportEndpointID, netHeader buffer.View, vv buffer.VectorisedView) bool {
-	s := newSegment(r, id, vv)
+func (f *Forwarder) HandlePacket(r *stack.Route, id stack.TransportEndpointID, pkt tcpip.PacketBuffer) bool {
+	s := newSegment(r, id, pkt)
 	defer s.decRef()
 
 	// We only care about well-formed SYN packets.
diff --git a/pkg/tcpip/transport/tcp/protocol.go b/pkg/tcpip/transport/tcp/protocol.go
index db40785d3..c4f1a84bb 100644
--- a/pkg/tcpip/transport/tcp/protocol.go
+++ b/pkg/tcpip/transport/tcp/protocol.go
@@ -126,8 +126,8 @@ func (*protocol) ParsePorts(v buffer.View) (src, dst uint16, err *tcpip.Error) {
 // a reset is sent in response to any incoming segment except another reset. In
 // particular, SYNs addressed to a non-existent connection are rejected by this
 // means."
-func (*protocol) HandleUnknownDestinationPacket(r *stack.Route, id stack.TransportEndpointID, netHeader buffer.View, vv buffer.VectorisedView) bool {
-	s := newSegment(r, id, vv)
+func (*protocol) HandleUnknownDestinationPacket(r *stack.Route, id stack.TransportEndpointID, pkt tcpip.PacketBuffer) bool {
+	s := newSegment(r, id, pkt)
 	defer s.decRef()
 
 	if !s.parse() || !s.csumValid {
diff --git a/pkg/tcpip/transport/tcp/segment.go b/pkg/tcpip/transport/tcp/segment.go
index c4a89525e..1c10da5ca 100644
--- a/pkg/tcpip/transport/tcp/segment.go
+++ b/pkg/tcpip/transport/tcp/segment.go
@@ -18,6 +18,7 @@ import (
 	"sync/atomic"
 	"time"
 
+	"gvisor.dev/gvisor/pkg/tcpip"
 	"gvisor.dev/gvisor/pkg/tcpip/buffer"
 	"gvisor.dev/gvisor/pkg/tcpip/header"
 	"gvisor.dev/gvisor/pkg/tcpip/seqnum"
@@ -60,13 +61,13 @@ type segment struct {
 	xmitTime time.Time `state:".(unixTime)"`
 }
 
-func newSegment(r *stack.Route, id stack.TransportEndpointID, vv buffer.VectorisedView) *segment {
+func newSegment(r *stack.Route, id stack.TransportEndpointID, pkt tcpip.PacketBuffer) *segment {
 	s := &segment{
 		refCnt: 1,
 		id:     id,
 		route:  r.Clone(),
 	}
-	s.data = vv.Clone(s.views[:])
+	s.data = pkt.Data.Clone(s.views[:])
 	s.rcvdTime = time.Now()
 	return s
 }
diff --git a/pkg/tcpip/transport/tcp/testing/context/context.go b/pkg/tcpip/transport/tcp/testing/context/context.go
index ef823e4ae..4854e719d 100644
--- a/pkg/tcpip/transport/tcp/testing/context/context.go
+++ b/pkg/tcpip/transport/tcp/testing/context/context.go
@@ -302,7 +302,9 @@ func (c *Context) SendICMPPacket(typ header.ICMPv4Type, code uint8, p1, p2 []byt
 	copy(icmp[header.ICMPv4PayloadOffset:], p2)
 
 	// Inject packet.
-	c.linkEP.Inject(ipv4.ProtocolNumber, buf.ToVectorisedView())
+	c.linkEP.InjectInbound(ipv4.ProtocolNumber, tcpip.PacketBuffer{
+		Data: buf.ToVectorisedView(),
+	})
 }
 
 // BuildSegment builds a TCP segment based on the given Headers and payload.
@@ -350,13 +352,17 @@ func (c *Context) BuildSegment(payload []byte, h *Headers) buffer.VectorisedView
 // SendSegment sends a TCP segment that has already been built and written to a
 // buffer.VectorisedView.
 func (c *Context) SendSegment(s buffer.VectorisedView) {
-	c.linkEP.Inject(ipv4.ProtocolNumber, s)
+	c.linkEP.InjectInbound(ipv4.ProtocolNumber, tcpip.PacketBuffer{
+		Data: s,
+	})
 }
 
 // SendPacket builds and sends a TCP segment(with the provided payload & TCP
 // headers) in an IPv4 packet via the link layer endpoint.
 func (c *Context) SendPacket(payload []byte, h *Headers) {
-	c.linkEP.Inject(ipv4.ProtocolNumber, c.BuildSegment(payload, h))
+	c.linkEP.InjectInbound(ipv4.ProtocolNumber, tcpip.PacketBuffer{
+		Data: c.BuildSegment(payload, h),
+	})
 }
 
 // SendAck sends an ACK packet.
@@ -518,7 +524,9 @@ func (c *Context) SendV6Packet(payload []byte, h *Headers) {
 	t.SetChecksum(^t.CalculateChecksum(xsum))
 
 	// Inject packet.
-	c.linkEP.Inject(ipv6.ProtocolNumber, buf.ToVectorisedView())
+	c.linkEP.InjectInbound(ipv6.ProtocolNumber, tcpip.PacketBuffer{
+		Data: buf.ToVectorisedView(),
+	})
 }
 
 // CreateConnected creates a connected TCP endpoint.