xsteadfastx/wireguard-go
1
0
Fork 0
mirror of https://git.zx2c4.com/wireguard-go synced 2024-11-15 01:05:15 +01:00
Code Issues Releases Wiki Activity

device: reduce number of append calls when padding

Browse Source 
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2021-01-29 20:10:48 +01:00
parent de51129e33
commit a9f80d8c58
1 changed files with 2 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
device/send.go
View File

@ -367,7 +367,7 @@ func calculatePaddingSize(packetSize, mtu int) int {
* Obs. One instance per core * Obs. One instance per core
*/ */
func (device *Device) RoutineEncryption() { func (device *Device) RoutineEncryption() {
var paddingZeros [PaddingMultiple]byte
var nonce [chacha20poly1305.NonceSize]byte var nonce [chacha20poly1305.NonceSize]byte
defer device.log.Verbosef("Routine: encryption worker - stopped") defer device.log.Verbosef("Routine: encryption worker - stopped")
@ -386,11 +386,8 @@ func (device *Device) RoutineEncryption() {
binary.LittleEndian.PutUint64(fieldNonce, elem.nonce) binary.LittleEndian.PutUint64(fieldNonce, elem.nonce)
// pad content to multiple of 16 // pad content to multiple of 16
paddingSize := calculatePaddingSize(len(elem.packet), int(atomic.LoadInt32(&device.tun.mtu))) paddingSize := calculatePaddingSize(len(elem.packet), int(atomic.LoadInt32(&device.tun.mtu)))
for i := 0; i < paddingSize; i++ { elem.packet = append(elem.packet, paddingZeros[:paddingSize]...)
elem.packet = append(elem.packet, 0)
}
// encrypt content and release to consumer // encrypt content and release to consumer