From f4105ac21a9f11f5231681239ca92ac814b5149d Mon Sep 17 00:00:00 2001 From: Andrei Vagin Date: Thu, 28 Mar 2019 11:02:23 -0700 Subject: netstack/fdbased: add generic segmentation offload (GSO) support The linux packet socket can handle GSO packets, so we can segment packets to 64K instead of the MTU which is usually 1500. Here are numbers for the nginx-1m test: runsc: 579330.01 [Kbytes/sec] received runsc-gso: 1794121.66 [Kbytes/sec] received runc: 2122139.06 [Kbytes/sec] received and for tcp_benchmark: $ tcp_benchmark --duration 15 --ideal [ 4] 0.0-15.0 sec 86647 MBytes 48456 Mbits/sec $ tcp_benchmark --client --duration 15 --ideal [ 4] 0.0-15.0 sec 2173 MBytes 1214 Mbits/sec $ tcp_benchmark --client --duration 15 --ideal --gso 65536 [ 4] 0.0-15.0 sec 19357 MBytes 10825 Mbits/sec PiperOrigin-RevId: 240809103 Change-Id: I2637f104db28b5d4c64e1e766c610162a195775a --- pkg/tcpip/stack/stack_test.go | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'pkg/tcpip/stack/stack_test.go') diff --git a/pkg/tcpip/stack/stack_test.go b/pkg/tcpip/stack/stack_test.go index da8269999..b5375df3c 100644 --- a/pkg/tcpip/stack/stack_test.go +++ b/pkg/tcpip/stack/stack_test.go @@ -112,7 +112,7 @@ func (f *fakeNetworkEndpoint) Capabilities() stack.LinkEndpointCapabilities { return f.linkEP.Capabilities() } -func (f *fakeNetworkEndpoint) WritePacket(r *stack.Route, hdr buffer.Prependable, payload buffer.VectorisedView, protocol tcpip.TransportProtocolNumber, _ uint8, loop stack.PacketLooping) *tcpip.Error { +func (f *fakeNetworkEndpoint) WritePacket(r *stack.Route, gso *stack.GSO, hdr buffer.Prependable, payload buffer.VectorisedView, protocol tcpip.TransportProtocolNumber, _ uint8, loop stack.PacketLooping) *tcpip.Error { // Increment the sent packet count in the protocol descriptor. f.proto.sendPacketCount[int(r.RemoteAddress[0])%len(f.proto.sendPacketCount)]++ @@ -134,7 +134,7 @@ func (f *fakeNetworkEndpoint) WritePacket(r *stack.Route, hdr buffer.Prependable return nil } - return f.linkEP.WritePacket(r, hdr, payload, fakeNetNumber) + return f.linkEP.WritePacket(r, gso, hdr, payload, fakeNetNumber) } func (*fakeNetworkEndpoint) Close() {} @@ -281,7 +281,7 @@ func sendTo(t *testing.T, s *stack.Stack, addr tcpip.Address, payload buffer.Vie defer r.Release() hdr := buffer.NewPrependable(int(r.MaxHeaderLength())) - if err := r.WritePacket(hdr, payload.ToVectorisedView(), fakeTransNumber, 123); err != nil { + if err := r.WritePacket(nil /* gso */, hdr, payload.ToVectorisedView(), fakeTransNumber, 123); err != nil { t.Errorf("WritePacket failed: %v", err) } } -- cgit v1.2.3