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Copy UDP GSO support from tailscale

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世界 2024-11-22 16:36:35 +08:00
parent 06b4d4ecd1
commit 2b8115e83b
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11 changed files with 1313 additions and 820 deletions
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16
tun_linux_flags.go
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@ -12,6 +12,12 @@ import (
"golang.org/x/sys/unix"
)
const (
// TODO: support TSO with ECN bits
tunTCPOffloads = unix.TUN_F_CSUM | unix.TUN_F_TSO4 | unix.TUN_F_TSO6
tunUDPOffloads = unix.TUN_F_USO4 | unix.TUN_F_USO6
)
func checkVNETHDREnabled(fd int, name string) (bool, error) {
ifr, err := unix.NewIfreq(name)
if err != nil {
@ -25,17 +31,17 @@ func checkVNETHDREnabled(fd int, name string) (bool, error) {
}
func setTCPOffload(fd int) error {
const (
// TODO: support TSO with ECN bits
tunOffloads = unix.TUN_F_CSUM | unix.TUN_F_TSO4 | unix.TUN_F_TSO6
)
err := unix.IoctlSetInt(fd, unix.TUNSETOFFLOAD, tunOffloads)
err := unix.IoctlSetInt(fd, unix.TUNSETOFFLOAD, tunTCPOffloads)
if err != nil {
return E.Cause(os.NewSyscallError("TUNSETOFFLOAD", err), "enable offload")
}
return nil
}
func setUDPOffload(fd int) error {
return unix.IoctlSetInt(fd, unix.TUNSETOFFLOAD, tunTCPOffloads|tunUDPOffloads)
}
type ifreqData struct {
ifrName [unix.IFNAMSIZ]byte
ifrData uintptr