yggdrasil-network/yggdrasil-go
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Attempt to support NetBSD

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This code actually consolidates a lot of the BSD code together, and even setting the interface MTU with SIOCSIFMTU seems to work fine.

What doesn't work though is setting the interface address using SIOCSIFADDR_IN6, which I attempted to plagiarise from the Darwin code.

As a fallback, ifconfig is used, which solves the problem enough to get it working.
This commit is contained in:
Neil Alexander 2018-03-04 23:47:01 +00:00
parent b30b6022a8
commit 166d25619d
5 changed files with 106 additions and 111 deletions
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33
src/yggdrasil/tun_freebsd.go
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@ -1,7 +1,5 @@
package yggdrasil
// This is to catch FreeBSD and NetBSD
func getDefaults() tunDefaultParameters {
return tunDefaultParameters{
maximumIfMTU: 32767,
@ -10,34 +8,3 @@ func getDefaults() tunDefaultParameters {
defaultIfTAPMode: true,
}
}
// Warning! When porting this to other BSDs, the tuninfo struct can appear with
// the fields in a different order, and the consts below might also have
// different values
/*
FreeBSD/NetBSD, net/if_tun.h:
struct tuninfo {
int baudrate;
short mtu;
u_char type;
u_char dummy;
};
*/
type tuninfo struct {
tun_baudrate int32
tun_mtu int16
tun_type uint8
tun_dummy uint8
}
func (ti *tuninfo) setInfo(tun *tunDevice) {
ti.tun_mtu = int16(tun.mtu)
}
const TUNSIFINFO = (0x80000000) | ((8 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 91
const TUNGIFINFO = (0x40000000) | ((8 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 92
const TUNSIFHEAD = (0x80000000) | ((4 & 0x1fff) << 16) | uint32(byte('t'))<<8 | 96
const SIOCAIFADDR_IN6 = (0x80000000) | ((4 & 0x1fff) << 16) | uint32(byte('i'))<<8 | 27