SchultesDev/wireguard-go
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wintun: do not load dll in init()

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This prevents linking to wintun.dll until it's actually needed, which
should improve startup time.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2020-12-09 01:46:55 +01:00
parent 347ce76bbc
commit ca9edf1c63
5 changed files with 21 additions and 14 deletions
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16
tun/wintun/session_windows.go
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@@ -30,12 +30,12 @@ type Packet struct {
}
var (
procWintunAllocateSendPacket = modwintun.NewProc("WintunAllocateSendPacket").Addr()
procWintunAllocateSendPacket = modwintun.NewProc("WintunAllocateSendPacket")
procWintunEndSession = modwintun.NewProc("WintunEndSession")
procWintunGetReadWaitEvent = modwintun.NewProc("WintunGetReadWaitEvent")
procWintunReceivePacket = modwintun.NewProc("WintunReceivePacket").Addr()
procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket").Addr()
procWintunSendPacket = modwintun.NewProc("WintunSendPacket").Addr()
procWintunReceivePacket = modwintun.NewProc("WintunReceivePacket")
procWintunReleaseReceivePacket = modwintun.NewProc("WintunReleaseReceivePacket")
procWintunSendPacket = modwintun.NewProc("WintunSendPacket")
procWintunStartSession = modwintun.NewProc("WintunStartSession")
)
@@ -62,7 +62,7 @@ func (session Session) ReadWaitEvent() (handle windows.Handle) {
func (session Session) ReceivePacket() (packet []byte, err error) {
var packetSize uint32
r0, _, e1 := syscall.Syscall(procWintunReceivePacket, 2, session.handle, uintptr(unsafe.Pointer(&packetSize)), 0)
r0, _, e1 := syscall.Syscall(procWintunReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packetSize)), 0)
if r0 == 0 {
err = e1
return
@@ -72,11 +72,11 @@ func (session Session) ReceivePacket() (packet []byte, err error) {
}
func (session Session) ReleaseReceivePacket(packet []byte) {
syscall.Syscall(procWintunReleaseReceivePacket, 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
syscall.Syscall(procWintunReleaseReceivePacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
}
func (session Session) AllocateSendPacket(packetSize int) (packet []byte, err error) {
r0, _, e1 := syscall.Syscall(procWintunAllocateSendPacket, 2, session.handle, uintptr(packetSize), 0)
r0, _, e1 := syscall.Syscall(procWintunAllocateSendPacket.Addr(), 2, session.handle, uintptr(packetSize), 0)
if r0 == 0 {
err = e1
return
@@ -86,7 +86,7 @@ func (session Session) AllocateSendPacket(packetSize int) (packet []byte, err er
}
func (session Session) SendPacket(packet []byte) {
syscall.Syscall(procWintunSendPacket, 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
syscall.Syscall(procWintunSendPacket.Addr(), 2, session.handle, uintptr(unsafe.Pointer(&packet[0])), 0)
}
// unsafeSlice updates the slice slicePtr to be a slice