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pull deps in for optimization, maybe slice back out later

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This commit is contained in:
JackDoan
2025-11-08 11:23:12 -06:00
parent 1a51ee7884
commit ea1a9e5785
29 changed files with 2699 additions and 48 deletions
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68
overlay/tun_linux.go
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@@ -16,10 +16,10 @@ import (
"unsafe"
"github.com/gaissmai/bart"
"github.com/hetznercloud/virtio-go/virtio"
"github.com/sirupsen/logrus"
"github.com/slackhq/nebula/config"
"github.com/slackhq/nebula/overlay/vhostnet"
"github.com/slackhq/nebula/overlay/virtio"
"github.com/slackhq/nebula/routing"
"github.com/slackhq/nebula/util"
"github.com/vishvananda/netlink"
@@ -281,39 +281,6 @@ func (t *tun) RoutesFor(ip netip.Addr) routing.Gateways {
return r
}
func (t *tun) Read(p []byte) (int, error) {
hdr, out, err := t.vdev.ReceivePacket() //we are TXing
if err != nil {
return 0, err
}
if hdr.NumBuffers == 0 {
}
p = p[:len(out)]
copy(p, out)
return len(out), nil
}
func (t *tun) Write(b []byte) (int, error) {
maximum := len(b) //we are RXing
hdr := virtio.NetHdr{ //todo
Flags: unix.VIRTIO_NET_HDR_F_DATA_VALID,
GSOType: unix.VIRTIO_NET_HDR_GSO_NONE,
HdrLen: 0,
GSOSize: 0,
CsumStart: 0,
CsumOffset: 0,
NumBuffers: 0,
}
err := t.vdev.TransmitPacket(hdr, b)
if err != nil {
return 0, err
}
return maximum, nil
}
func (t *tun) deviceBytes() (o [16]byte) {
for i, c := range t.Device {
o[i] = byte(c)
@@ -740,3 +707,36 @@ func (t *tun) Close() error {
return nil
}
func (t *tun) Read(p []byte) (int, error) {
hdr, out, err := t.vdev.ReceivePacket() //we are TXing
if err != nil {
return 0, err
}
if hdr.NumBuffers > 1 {
t.l.WithField("num_buffers", hdr.NumBuffers).Info("wow, lots to TX from tun")
}
p = p[:len(out)]
copy(p, out)
return len(out), nil
}
func (t *tun) Write(b []byte) (int, error) {
maximum := len(b) //we are RXing
hdr := virtio.NetHdr{ //todo
Flags: unix.VIRTIO_NET_HDR_F_DATA_VALID,
GSOType: unix.VIRTIO_NET_HDR_GSO_NONE,
HdrLen: 0,
GSOSize: 0,
CsumStart: 0,
CsumOffset: 0,
NumBuffers: 0,
}
err := t.vdev.TransmitPacket(hdr, b)
if err != nil {
return 0, err
}
return maximum, nil
}