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[client] Add flag to configure MTU (#4213)

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This commit is contained in:
Viktor Liu
2025-08-26 16:00:14 +02:00
committed by GitHub
parent 9f84165763
commit f063866ce8
54 changed files with 710 additions and 434 deletions
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7
client/iface/wgproxy/ebpf/proxy.go
View File

@@ -17,6 +17,7 @@ import (
log "github.com/sirupsen/logrus"
nberrors "github.com/netbirdio/netbird/client/errors"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/internal/ebpf"
ebpfMgr "github.com/netbirdio/netbird/client/internal/ebpf/manager"
nbnet "github.com/netbirdio/netbird/util/net"
@@ -29,6 +30,7 @@ const (
// WGEBPFProxy definition for proxy with EBPF support
type WGEBPFProxy struct {
localWGListenPort int
mtu uint16
ebpfManager ebpfMgr.Manager
turnConnStore map[uint16]net.Conn
@@ -43,10 +45,11 @@ type WGEBPFProxy struct {
}
// NewWGEBPFProxy create new WGEBPFProxy instance
func NewWGEBPFProxy(wgPort int) *WGEBPFProxy {
func NewWGEBPFProxy(wgPort int, mtu uint16) *WGEBPFProxy {
log.Debugf("instantiate ebpf proxy")
wgProxy := &WGEBPFProxy{
localWGListenPort: wgPort,
mtu: mtu,
ebpfManager: ebpf.GetEbpfManagerInstance(),
turnConnStore: make(map[uint16]net.Conn),
}
@@ -138,7 +141,7 @@ func (p *WGEBPFProxy) Free() error {
// proxyToRemote read messages from local WireGuard interface and forward it to remote conn
// From this go routine has only one instance.
func (p *WGEBPFProxy) proxyToRemote() {
buf := make([]byte, 1500)
buf := make([]byte, p.mtu+bufsize.WGBufferOverhead)
for p.ctx.Err() == nil {
if err := p.readAndForwardPacket(buf); err != nil {
if p.ctx.Err() != nil {

6
client/iface/wgproxy/ebpf/proxy_test.go
View File

@@ -7,7 +7,7 @@ import (
)
func TestWGEBPFProxy_connStore(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
p, _ := wgProxy.storeTurnConn(nil)
if p != 1 {
@@ -27,7 +27,7 @@ func TestWGEBPFProxy_connStore(t *testing.T) {
}
func TestWGEBPFProxy_portCalculation_overflow(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
_, _ = wgProxy.storeTurnConn(nil)
wgProxy.lastUsedPort = 65535
@@ -43,7 +43,7 @@ func TestWGEBPFProxy_portCalculation_overflow(t *testing.T) {
}
func TestWGEBPFProxy_portCalculation_maxConn(t *testing.T) {
wgProxy := NewWGEBPFProxy(1)
wgProxy := NewWGEBPFProxy(1, 1280)
for i := 0; i < 65535; i++ {
_, _ = wgProxy.storeTurnConn(nil)

3
client/iface/wgproxy/ebpf/wrapper.go
View File

@@ -12,6 +12,7 @@ import (
log "github.com/sirupsen/logrus"
"github.com/netbirdio/netbird/client/iface/bufsize"
"github.com/netbirdio/netbird/client/iface/wgproxy/listener"
)
@@ -103,7 +104,7 @@ func (e *ProxyWrapper) CloseConn() error {
func (p *ProxyWrapper) proxyToLocal(ctx context.Context) {
defer p.WgeBPFProxy.removeTurnConn(uint16(p.wgEndpointAddr.Port))
buf := make([]byte, 1500)
buf := make([]byte, p.WgeBPFProxy.mtu+bufsize.WGBufferOverhead)
for {
n, err := p.readFromRemote(ctx, buf)
if err != nil {