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[client] Use offload in WireGuard bind receiver (#2815)

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Improve the performance on Linux and Android in case of P2P connections
This commit is contained in:
Zoltan Papp
2024-11-07 17:28:38 +01:00
committed by GitHub
parent 738387f2de
commit 4be826450b
3 changed files with 44 additions and 16 deletions
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54
client/iface/bind/ice_bind.go
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@@ -12,6 +12,7 @@ import (
"github.com/pion/transport/v3"
log "github.com/sirupsen/logrus"
"golang.org/x/net/ipv4"
"golang.org/x/net/ipv6"
wgConn "golang.zx2c4.com/wireguard/conn"
)
@@ -24,8 +25,8 @@ type receiverCreator struct {
iceBind *ICEBind
}
func (rc receiverCreator) CreateIPv4ReceiverFn(msgPool *sync.Pool, pc *ipv4.PacketConn, conn *net.UDPConn) wgConn.ReceiveFunc {
return rc.iceBind.createIPv4ReceiverFn(msgPool, pc, conn)
func (rc receiverCreator) CreateIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, rxOffload bool, msgPool *sync.Pool) wgConn.ReceiveFunc {
return rc.iceBind.createIPv4ReceiverFn(pc, conn, rxOffload, msgPool)
}
// ICEBind is a bind implementation with two main features:
@@ -154,7 +155,7 @@ func (b *ICEBind) Send(bufs [][]byte, ep wgConn.Endpoint) error {
return nil
}
func (s *ICEBind) createIPv4ReceiverFn(ipv4MsgsPool *sync.Pool, pc *ipv4.PacketConn, conn *net.UDPConn) wgConn.ReceiveFunc {
func (s *ICEBind) createIPv4ReceiverFn(pc *ipv4.PacketConn, conn *net.UDPConn, rxOffload bool, msgsPool *sync.Pool) wgConn.ReceiveFunc {
s.muUDPMux.Lock()
defer s.muUDPMux.Unlock()
@@ -166,16 +167,30 @@ func (s *ICEBind) createIPv4ReceiverFn(ipv4MsgsPool *sync.Pool, pc *ipv4.PacketC
},
)
return func(bufs [][]byte, sizes []int, eps []wgConn.Endpoint) (n int, err error) {
msgs := ipv4MsgsPool.Get().(*[]ipv4.Message)
defer ipv4MsgsPool.Put(msgs)
msgs := getMessages(msgsPool)
for i := range bufs {
(*msgs)[i].Buffers[0] = bufs[i]
(*msgs)[i].OOB = (*msgs)[i].OOB[:cap((*msgs)[i].OOB)]
}
defer putMessages(msgs, msgsPool)
var numMsgs int
if runtime.GOOS == "linux" {
numMsgs, err = pc.ReadBatch(*msgs, 0)
if err != nil {
return 0, err
if runtime.GOOS == "linux" || runtime.GOOS == "android" {
if rxOffload {
readAt := len(*msgs) - (wgConn.IdealBatchSize / wgConn.UdpSegmentMaxDatagrams)
//nolint
numMsgs, err = pc.ReadBatch((*msgs)[readAt:], 0)
if err != nil {
return 0, err
}
numMsgs, err = wgConn.SplitCoalescedMessages(*msgs, readAt, wgConn.GetGSOSize)
if err != nil {
return 0, err
}
} else {
numMsgs, err = pc.ReadBatch(*msgs, 0)
if err != nil {
return 0, err
}
}
} else {
msg := &(*msgs)[0]
@@ -191,11 +206,12 @@ func (s *ICEBind) createIPv4ReceiverFn(ipv4MsgsPool *sync.Pool, pc *ipv4.PacketC
// todo: handle err
ok, _ := s.filterOutStunMessages(msg.Buffers, msg.N, msg.Addr)
if ok {
sizes[i] = 0
} else {
sizes[i] = msg.N
continue
}
sizes[i] = msg.N
if sizes[i] == 0 {
continue
}
addrPort := msg.Addr.(*net.UDPAddr).AddrPort()
ep := &wgConn.StdNetEndpoint{AddrPort: addrPort} // TODO: remove allocation
wgConn.GetSrcFromControl(msg.OOB[:msg.NN], ep)
@@ -273,3 +289,15 @@ func fakeAddress(peerAddress *net.UDPAddr) (*net.UDPAddr, error) {
}
return newAddr, nil
}
func getMessages(msgsPool *sync.Pool) *[]ipv6.Message {
return msgsPool.Get().(*[]ipv6.Message)
}
func putMessages(msgs *[]ipv6.Message, msgsPool *sync.Pool) {
for i := range *msgs {
(*msgs)[i].OOB = (*msgs)[i].OOB[:0]
(*msgs)[i] = ipv6.Message{Buffers: (*msgs)[i].Buffers, OOB: (*msgs)[i].OOB}
}
msgsPool.Put(msgs)
}