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Begin work on source address caching (linux)

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This commit is contained in:
Mathias Hall-Andersen 2017-09-24 21:35:25 +02:00
parent c545d63bb9
commit eefa47b0f9
5 changed files with 273 additions and 11 deletions
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11
src/tun_linux.go
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@ -120,14 +120,6 @@ func (tun *NativeTun) Name() string {
return tun.name
}
func toInt32(val []byte) int32 {
n := binary.LittleEndian.Uint32(val[:4])
if n >= (1 << 31) {
return -int32(^n) - 1
}
return int32(n)
}
func getDummySock() (int, error) {
return unix.Socket(
unix.AF_INET,
@ -157,7 +149,8 @@ func getIFIndex(name string) (int32, error) {
return 0, errno
}
return toInt32(ifr[unix.IFNAMSIZ:]), nil
index := binary.LittleEndian.Uint32(ifr[unix.IFNAMSIZ:])
return toInt32(index), nil
}
func (tun *NativeTun) setMTU(n int) error {