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wintun: Write exchange buffer increased back to 1MiB

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2019-02-20 20:13:33 +01:00
parent 2491f9d454
commit ac4944a708
1 changed files with 4 additions and 5 deletions
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9
tun/tun_windows.go
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@ -19,18 +19,17 @@ const (
packetExchangeMax uint32 = 256 // Number of packets that may be written at a time packetExchangeMax uint32 = 256 // Number of packets that may be written at a time
packetExchangeAlignment uint32 = 16 // Number of bytes packets are aligned to in exchange buffers packetExchangeAlignment uint32 = 16 // Number of bytes packets are aligned to in exchange buffers
packetSizeMax uint32 = 0xf000 - packetExchangeAlignment // Maximum packet size packetSizeMax uint32 = 0xf000 - packetExchangeAlignment // Maximum packet size
packetExchangeSizeRead uint32 = 0x100000 // Read exchange buffer size (defaults to 1MiB) packetExchangeSize uint32 = 0x100000 // Exchange buffer size (defaults to 1MiB)
packetExchangeSizeWrite uint32 = 0x10000 // Write exchange buffer size (defaults to 64kiB)
) )
type exchgBufRead struct { type exchgBufRead struct {
data [packetExchangeSizeRead]byte data [packetExchangeSize]byte
offset uint32 offset uint32
avail uint32 avail uint32
} }
type exchgBufWrite struct { type exchgBufWrite struct {
data [packetExchangeSizeWrite]byte data [packetExchangeSize]byte
offset uint32 offset uint32
packetNum uint32 packetNum uint32
} }
@ -323,7 +322,7 @@ func (tun *nativeTun) putTunPacket(buff []byte) error {
} }
pSize := packetAlign(packetExchangeAlignment + size) pSize := packetAlign(packetExchangeAlignment + size)
if tun.wrBuff.packetNum >= packetExchangeMax || tun.wrBuff.offset+pSize >= packetExchangeSizeWrite { if tun.wrBuff.packetNum >= packetExchangeMax || tun.wrBuff.offset+pSize >= packetExchangeSize {
// Exchange buffer is full -> flush first. // Exchange buffer is full -> flush first.
err := tun.flush() err := tun.flush()
if err != nil { if err != nil {