diff options
| author | Ghanan Gowripalan <ghanan@google.com> | 2021-01-21 14:08:20 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-01-21 14:10:37 -0800 |
| commit | 0ca4cf769840afa7c44477d75d9f780540c01fcd (patch) | |
| tree | 913ad548260139ccb1bc8ba28434b2a4d58a5ce9 /pkg/tcpip | |
| parent | 1005a8849173c84f12f4a86b32fb170ab9149082 (diff) | |
Populate EgressRoute, GSO, Netproto in NIC
fdbased and qdisc layers expect these fields to already be
populated before being reached.
PiperOrigin-RevId: 353099492
Diffstat (limited to 'pkg/tcpip')
| -rw-r--r-- | pkg/tcpip/link/qdisc/fifo/endpoint.go | 9 | ||||
| -rw-r--r-- | pkg/tcpip/stack/nic.go | 12 |
2 files changed, 17 insertions, 4 deletions
diff --git a/pkg/tcpip/link/qdisc/fifo/endpoint.go b/pkg/tcpip/link/qdisc/fifo/endpoint.go index 87035b034..03efba606 100644 --- a/pkg/tcpip/link/qdisc/fifo/endpoint.go +++ b/pkg/tcpip/link/qdisc/fifo/endpoint.go @@ -165,12 +165,15 @@ func (e *endpoint) WritePacket(r stack.RouteInfo, gso *stack.GSO, protocol tcpip } // WritePackets implements stack.LinkEndpoint.WritePackets. +// +// Being a batch API, each packet in pkts should have the following +// fields populated: +// - pkt.EgressRoute +// - pkt.GSOOptions +// - pkt.NetworkProtocolNumber func (e *endpoint) WritePackets(r stack.RouteInfo, gso *stack.GSO, pkts stack.PacketBufferList, protocol tcpip.NetworkProtocolNumber) (int, *tcpip.Error) { enqueued := 0 for pkt := pkts.Front(); pkt != nil; { - pkt.EgressRoute = r - pkt.GSOOptions = gso - pkt.NetworkProtocolNumber = protocol d := e.dispatchers[int(pkt.Hash)%len(e.dispatchers)] nxt := pkt.Next() if !d.q.enqueue(pkt) { diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go index f2bca93d3..d19150a20 100644 --- a/pkg/tcpip/stack/nic.go +++ b/pkg/tcpip/stack/nic.go @@ -344,6 +344,9 @@ func (n *NIC) writePacket(r RouteInfo, gso *GSO, protocol tcpip.NetworkProtocolN // WritePacket takes ownership of pkt, calculate numBytes first. numBytes := pkt.Size() + pkt.EgressRoute = r + pkt.GSOOptions = gso + pkt.NetworkProtocolNumber = protocol if err := n.LinkEndpoint.WritePacket(r, gso, protocol, pkt); err != nil { return err } @@ -357,7 +360,14 @@ func (n *NIC) writePacket(r RouteInfo, gso *GSO, protocol tcpip.NetworkProtocolN func (n *NIC) WritePackets(r *Route, gso *GSO, pkts PacketBufferList, protocol tcpip.NetworkProtocolNumber) (int, *tcpip.Error) { // TODO(gvisor.dev/issue/4458): Queue packets whie link address resolution // is being peformed like WritePacket. - writtenPackets, err := n.LinkEndpoint.WritePackets(r.Fields(), gso, pkts, protocol) + routeInfo := r.Fields() + for pkt := pkts.Front(); pkt != nil; pkt = pkt.Next() { + pkt.EgressRoute = routeInfo + pkt.GSOOptions = gso + pkt.NetworkProtocolNumber = protocol + } + + writtenPackets, err := n.LinkEndpoint.WritePackets(routeInfo, gso, pkts, protocol) n.stats.Tx.Packets.IncrementBy(uint64(writtenPackets)) writtenBytes := 0 for i, pb := 0, pkts.Front(); i < writtenPackets && pb != nil; i, pb = i+1, pb.Next() { |