Only carry GSO options in the packet buffer

With this change, GSO options no longer needs to be passed around as
a function argument in the write path.

This change is done in preparation for a later change that defers
segmentation, and may change GSO options for a packet as it flows
down the stack.

Updates #170.

PiperOrigin-RevId: 369774872

1 files changed, 4 insertions, 4 deletions

diff --git a/pkg/tcpip/stack/route.go b/pkg/tcpip/stack/route.go
index 4ae6bed5a..4ecde5995 100644
--- a/pkg/tcpip/stack/route.go
+++ b/pkg/tcpip/stack/route.go
@@ -448,22 +448,22 @@ func (r *Route) isValidForOutgoingRLocked() bool {
 }
 
 // WritePacket writes the packet through the given route.
-func (r *Route) WritePacket(gso *GSO, params NetworkHeaderParams, pkt *PacketBuffer) tcpip.Error {
+func (r *Route) WritePacket(params NetworkHeaderParams, pkt *PacketBuffer) tcpip.Error {
 	if !r.isValidForOutgoing() {
 		return &tcpip.ErrInvalidEndpointState{}
 	}
 
-	return r.outgoingNIC.getNetworkEndpoint(r.NetProto()).WritePacket(r, gso, params, pkt)
+	return r.outgoingNIC.getNetworkEndpoint(r.NetProto()).WritePacket(r, params, pkt)
 }
 
 // WritePackets writes a list of n packets through the given route and returns
 // the number of packets written.
-func (r *Route) WritePackets(gso *GSO, pkts PacketBufferList, params NetworkHeaderParams) (int, tcpip.Error) {
+func (r *Route) WritePackets(pkts PacketBufferList, params NetworkHeaderParams) (int, tcpip.Error) {
 	if !r.isValidForOutgoing() {
 		return 0, &tcpip.ErrInvalidEndpointState{}
 	}
 
-	return r.outgoingNIC.getNetworkEndpoint(r.NetProto()).WritePackets(r, gso, pkts, params)
+	return r.outgoingNIC.getNetworkEndpoint(r.NetProto()).WritePackets(r, pkts, params)
 }
 
 // WriteHeaderIncludedPacket writes a packet already containing a network