e9affb4274
The old boot.spl.hostid option was not working correctly due to an upstream bug. Instead, now we will create the /etc/hostid file so that all applications (including the ZFS kernel modules, ZFS user-space applications and other unrelated programs) pick-up the same system-wide host id. Note that glibc (and by extension, the `hostid` program) also respect the host id configured in /etc/hostid, if it exists. The hostid option is now mandatory when using ZFS because otherwise, ZFS will require you to force-import your ZFS pools if you want to use them, which is undesirable because it disables some of the checks that ZFS does to make sure it is safe to import a ZFS pool. The /etc/hostid file must also exist when booting the initrd, before the SPL kernel module is loaded, so that ZFS picks up the hostid correctly. The complexity in creating the /etc/hostid file is due to having to write the host ID as a 32-bit binary value, taking into account the endianness of the machine, while using only shell commands and/or simple utilities (to avoid exploding the size of the initrd).
928 lines
30 KiB
Nix
928 lines
30 KiB
Nix
{ config, lib, pkgs, utils, ... }:
|
||
|
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with lib;
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with utils;
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|
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let
|
||
|
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cfg = config.networking;
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interfaces = attrValues cfg.interfaces;
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hasVirtuals = any (i: i.virtual) interfaces;
|
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hasSits = cfg.sits != { };
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hasBonds = cfg.bonds != { };
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||
|
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# We must escape interfaces due to the systemd interpretation
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subsystemDevice = interface:
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"sys-subsystem-net-devices-${escapeSystemdPath interface}.device";
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||
|
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addrOpts = v:
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assert v == 4 || v == 6;
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{
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address = mkOption {
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type = types.str;
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description = ''
|
||
IPv${toString v} address of the interface. Leave empty to configure the
|
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interface using DHCP.
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'';
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};
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|
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prefixLength = mkOption {
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type = types.addCheck types.int (n: n >= 0 && n <= (if v == 4 then 32 else 128));
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description = ''
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||
Subnet mask of the interface, specified as the number of
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bits in the prefix (<literal>${if v == 4 then "24" else "64"}</literal>).
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'';
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};
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};
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interfaceOpts = { name, ... }: {
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options = {
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name = mkOption {
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example = "eth0";
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type = types.str;
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description = "Name of the interface.";
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};
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|
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ip4 = mkOption {
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default = [ ];
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example = [
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{ address = "10.0.0.1"; prefixLength = 16; }
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{ address = "192.168.1.1"; prefixLength = 24; }
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];
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type = types.listOf types.optionSet;
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options = addrOpts 4;
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description = ''
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List of IPv4 addresses that will be statically assigned to the interface.
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'';
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};
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ip6 = mkOption {
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default = [ ];
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example = [
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{ address = "fdfd:b3f0:482::1"; prefixLength = 48; }
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{ address = "2001:1470:fffd:2098::e006"; prefixLength = 64; }
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];
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type = types.listOf types.optionSet;
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options = addrOpts 6;
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description = ''
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List of IPv6 addresses that will be statically assigned to the interface.
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'';
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};
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ipAddress = mkOption {
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default = null;
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example = "10.0.0.1";
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type = types.nullOr types.str;
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description = ''
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IP address of the interface. Leave empty to configure the
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interface using DHCP.
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'';
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};
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prefixLength = mkOption {
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default = null;
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example = 24;
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type = types.nullOr types.int;
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description = ''
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Subnet mask of the interface, specified as the number of
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bits in the prefix (<literal>24</literal>).
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'';
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};
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subnetMask = mkOption {
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default = null;
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description = ''
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Defunct, supply the prefix length instead.
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'';
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};
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ipv6Address = mkOption {
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default = null;
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example = "2001:1470:fffd:2098::e006";
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type = types.nullOr types.str;
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description = ''
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IPv6 address of the interface. Leave empty to configure the
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interface using NDP.
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'';
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};
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ipv6PrefixLength = mkOption {
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default = 64;
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example = 64;
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type = types.int;
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description = ''
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Subnet mask of the interface, specified as the number of
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bits in the prefix (<literal>64</literal>).
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'';
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};
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macAddress = mkOption {
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default = null;
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example = "00:11:22:33:44:55";
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type = types.nullOr (types.str);
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description = ''
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MAC address of the interface. Leave empty to use the default.
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'';
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};
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mtu = mkOption {
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default = null;
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example = 9000;
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type = types.nullOr types.int;
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description = ''
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MTU size for packets leaving the interface. Leave empty to use the default.
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'';
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};
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virtual = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Whether this interface is virtual and should be created by tunctl.
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This is mainly useful for creating bridges between a host a virtual
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network such as VPN or a virtual machine.
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'';
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};
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virtualOwner = mkOption {
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default = "root";
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type = types.str;
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description = ''
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In case of a virtual device, the user who owns it.
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'';
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};
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virtualType = mkOption {
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default = null;
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type = types.nullOr (types.addCheck types.str (v: v == "tun" || v == "tap"));
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description = ''
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The explicit type of interface to create. Accepts tun or tap strings.
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Also accepts null to implicitly detect the type of device.
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'';
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};
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proxyARP = mkOption {
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default = false;
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type = types.bool;
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description = ''
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Turn on proxy_arp for this device (and proxy_ndp for ipv6).
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This is mainly useful for creating pseudo-bridges between a real
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interface and a virtual network such as VPN or a virtual machine for
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interfaces that don't support real bridging (most wlan interfaces).
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As ARP proxying acts slightly above the link-layer, below-ip traffic
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isn't bridged, so things like DHCP won't work. The advantage above
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using NAT lies in the fact that no IP addresses are shared, so all
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hosts are reachable/routeable.
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WARNING: turns on ip-routing, so if you have multiple interfaces, you
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should think of the consequence and setup firewall rules to limit this.
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'';
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};
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};
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config = {
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name = mkDefault name;
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};
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};
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hexChars = stringToCharacters "0123456789abcdef";
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isHexString = s: all (c: elem c hexChars) (stringToCharacters (toLower s));
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in
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{
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###### interface
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options = {
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networking.hostName = mkOption {
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default = "nixos";
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description = ''
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The name of the machine. Leave it empty if you want to obtain
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it from a DHCP server (if using DHCP).
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'';
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};
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networking.hostId = mkOption {
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default = null;
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example = "4e98920d";
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type = types.nullOr types.str;
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description = ''
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The 32-bit host ID of the machine, formatted as 8 hexadecimal characters.
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You should try to make this ID unique among your machines. You can
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generate a random 32-bit ID using the following command:
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<literal>head -c4 /dev/urandom | od -A none -t x4</literal>
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'';
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};
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networking.enableIPv6 = mkOption {
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default = true;
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description = ''
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Whether to enable support for IPv6.
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'';
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};
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networking.defaultGateway = mkOption {
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default = "";
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example = "131.211.84.1";
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description = ''
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The default gateway. It can be left empty if it is auto-detected through DHCP.
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'';
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};
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networking.defaultGatewayWindowSize = mkOption {
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default = null;
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example = 524288;
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type = types.nullOr types.int;
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description = ''
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The window size of the default gateway. It limits maximal data bursts that TCP peers
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are allowed to send to us.
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'';
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};
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networking.nameservers = mkOption {
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default = [];
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example = ["130.161.158.4" "130.161.33.17"];
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description = ''
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The list of nameservers. It can be left empty if it is auto-detected through DHCP.
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'';
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};
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networking.search = mkOption {
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default = [];
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example = [ "example.com" "local.domain" ];
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type = types.listOf types.str;
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description = ''
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The list of search paths used when resolving domain names.
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'';
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};
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networking.domain = mkOption {
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default = "";
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example = "home";
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description = ''
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The domain. It can be left empty if it is auto-detected through DHCP.
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'';
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};
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networking.useHostResolvConf = mkOption {
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type = types.bool;
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default = false;
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description = ''
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In containers, whether to use the
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<filename>resolv.conf</filename> supplied by the host.
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'';
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};
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networking.localCommands = mkOption {
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default = "";
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example = "text=anything; echo You can put $text here.";
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description = ''
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Shell commands to be executed at the end of the
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<literal>network-setup</literal> systemd service. Note that if
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you are using DHCP to obtain the network configuration,
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interfaces may not be fully configured yet.
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'';
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};
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networking.interfaces = mkOption {
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default = {};
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example =
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{ eth0.ip4 = [ {
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address = "131.211.84.78";
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prefixLength = 25;
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} ];
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};
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description = ''
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The configuration for each network interface. If
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<option>networking.useDHCP</option> is true, then every
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interface not listed here will be configured using DHCP.
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'';
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type = types.loaOf types.optionSet;
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options = [ interfaceOpts ];
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};
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networking.bridges = mkOption {
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default = { };
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example =
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{ br0.interfaces = [ "eth0" "eth1" ];
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br1.interfaces = [ "eth2" "wlan0" ];
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};
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description =
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''
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This option allows you to define Ethernet bridge devices
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that connect physical networks together. The value of this
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option is an attribute set. Each attribute specifies a
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bridge, with the attribute name specifying the name of the
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bridge's network interface.
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'';
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type = types.attrsOf types.optionSet;
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|
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options = {
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|
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interfaces = mkOption {
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example = [ "eth0" "eth1" ];
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type = types.listOf types.string;
|
||
description =
|
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"The physical network interfaces connected by the bridge.";
|
||
};
|
||
|
||
};
|
||
|
||
};
|
||
|
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networking.bonds = mkOption {
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default = { };
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example = {
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bond0 = {
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interfaces = [ "eth0" "wlan0" ];
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miimon = 100;
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mode = "active-backup";
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||
};
|
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fatpipe.interfaces = [ "enp4s0f0" "enp4s0f1" "enp5s0f0" "enp5s0f1" ];
|
||
};
|
||
description = ''
|
||
This option allows you to define bond devices that aggregate multiple,
|
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underlying networking interfaces together. The value of this option is
|
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an attribute set. Each attribute specifies a bond, with the attribute
|
||
name specifying the name of the bond's network interface
|
||
'';
|
||
|
||
type = types.attrsOf types.optionSet;
|
||
|
||
options = {
|
||
|
||
interfaces = mkOption {
|
||
example = [ "enp4s0f0" "enp4s0f1" "wlan0" ];
|
||
type = types.listOf types.str;
|
||
description = "The interfaces to bond together";
|
||
};
|
||
|
||
lacp_rate = mkOption {
|
||
default = null;
|
||
example = "fast";
|
||
type = types.nullOr types.str;
|
||
description = ''
|
||
Option specifying the rate in which we'll ask our link partner
|
||
to transmit LACPDU packets in 802.3ad mode.
|
||
'';
|
||
};
|
||
|
||
miimon = mkOption {
|
||
default = null;
|
||
example = 100;
|
||
type = types.nullOr types.int;
|
||
description = ''
|
||
Miimon is the number of millisecond in between each round of polling
|
||
by the device driver for failed links. By default polling is not
|
||
enabled and the driver is trusted to properly detect and handle
|
||
failure scenarios.
|
||
'';
|
||
};
|
||
|
||
mode = mkOption {
|
||
default = null;
|
||
example = "active-backup";
|
||
type = types.nullOr types.str;
|
||
description = ''
|
||
The mode which the bond will be running. The default mode for
|
||
the bonding driver is balance-rr, optimizing for throughput.
|
||
More information about valid modes can be found at
|
||
https://www.kernel.org/doc/Documentation/networking/bonding.txt
|
||
'';
|
||
};
|
||
|
||
xmit_hash_policy = mkOption {
|
||
default = null;
|
||
example = "layer2+3";
|
||
type = types.nullOr types.str;
|
||
description = ''
|
||
Selects the transmit hash policy to use for slave selection in
|
||
balance-xor, 802.3ad, and tlb modes.
|
||
'';
|
||
};
|
||
|
||
};
|
||
};
|
||
|
||
networking.sits = mkOption {
|
||
type = types.attrsOf types.optionSet;
|
||
default = { };
|
||
example = {
|
||
hurricane = {
|
||
remote = "10.0.0.1";
|
||
local = "10.0.0.22";
|
||
ttl = 255;
|
||
};
|
||
msipv6 = {
|
||
remote = "192.168.0.1";
|
||
dev = "enp3s0";
|
||
ttl = 127;
|
||
};
|
||
};
|
||
description = ''
|
||
This option allows you to define 6-to-4 interfaces which should be automatically created.
|
||
'';
|
||
options = {
|
||
|
||
remote = mkOption {
|
||
type = types.nullOr types.str;
|
||
default = null;
|
||
example = "10.0.0.1";
|
||
description = ''
|
||
The address of the remote endpoint to forward traffic over.
|
||
'';
|
||
};
|
||
|
||
local = mkOption {
|
||
type = types.nullOr types.str;
|
||
default = null;
|
||
example = "10.0.0.22";
|
||
description = ''
|
||
The address of the local endpoint which the remote
|
||
side should send packets to.
|
||
'';
|
||
};
|
||
|
||
ttl = mkOption {
|
||
type = types.nullOr types.int;
|
||
default = null;
|
||
example = 255;
|
||
description = ''
|
||
The time-to-live of the connection to the remote tunnel endpoint.
|
||
'';
|
||
};
|
||
|
||
dev = mkOption {
|
||
type = types.nullOr types.str;
|
||
default = null;
|
||
example = "enp4s0f0";
|
||
description = ''
|
||
The underlying network device on which the tunnel resides.
|
||
'';
|
||
};
|
||
|
||
};
|
||
};
|
||
|
||
networking.vlans = mkOption {
|
||
default = { };
|
||
example = {
|
||
vlan0 = {
|
||
id = 3;
|
||
interface = "enp3s0";
|
||
};
|
||
vlan1 = {
|
||
id = 1;
|
||
interface = "wlan0";
|
||
};
|
||
};
|
||
description =
|
||
''
|
||
This option allows you to define vlan devices that tag packets
|
||
on top of a physical interface. The value of this option is an
|
||
attribute set. Each attribute specifies a vlan, with the name
|
||
specifying the name of the vlan interface.
|
||
'';
|
||
|
||
type = types.attrsOf types.optionSet;
|
||
|
||
options = {
|
||
|
||
id = mkOption {
|
||
example = 1;
|
||
type = types.int;
|
||
description = "The vlan identifier";
|
||
};
|
||
|
||
interface = mkOption {
|
||
example = "enp4s0";
|
||
type = types.string;
|
||
description = "The interface the vlan will transmit packets through.";
|
||
};
|
||
|
||
};
|
||
};
|
||
|
||
networking.useDHCP = mkOption {
|
||
type = types.bool;
|
||
default = true;
|
||
description = ''
|
||
Whether to use DHCP to obtain an IP address and other
|
||
configuration for all network interfaces that are not manually
|
||
configured.
|
||
'';
|
||
};
|
||
|
||
};
|
||
|
||
|
||
###### implementation
|
||
|
||
config = {
|
||
|
||
assertions =
|
||
(flip map interfaces (i: {
|
||
assertion = i.subnetMask == null;
|
||
message = "The networking.interfaces.${i.name}.subnetMask option is defunct. Use prefixLength instead.";
|
||
})) ++ [
|
||
{
|
||
assertion = cfg.hostId == null || (stringLength cfg.hostId == 8 && isHexString cfg.hostId);
|
||
message = "Invalid value given to the networking.hostId option.";
|
||
}
|
||
];
|
||
|
||
boot.kernelModules = [ ]
|
||
++ optional cfg.enableIPv6 "ipv6"
|
||
++ optional hasVirtuals "tun"
|
||
++ optional hasSits "sit"
|
||
++ optional hasBonds "bonding";
|
||
|
||
boot.extraModprobeConfig =
|
||
# This setting is intentional as it prevents default bond devices
|
||
# from being created.
|
||
optionalString hasBonds "options bonding max_bonds=0";
|
||
|
||
environment.systemPackages =
|
||
[ pkgs.host
|
||
pkgs.iproute
|
||
pkgs.iputils
|
||
pkgs.nettools
|
||
pkgs.wirelesstools
|
||
pkgs.iw
|
||
pkgs.rfkill
|
||
pkgs.openresolv
|
||
]
|
||
++ optional (cfg.bridges != {}) pkgs.bridge_utils
|
||
++ optional hasVirtuals pkgs.tunctl
|
||
++ optional cfg.enableIPv6 pkgs.ndisc6;
|
||
|
||
security.setuidPrograms = [ "ping" "ping6" ];
|
||
|
||
systemd.targets."network-interfaces" =
|
||
{ description = "All Network Interfaces";
|
||
wantedBy = [ "network.target" ];
|
||
unitConfig.X-StopOnReconfiguration = true;
|
||
};
|
||
|
||
systemd.services =
|
||
let
|
||
|
||
networkSetup =
|
||
{ description = "Networking Setup";
|
||
|
||
after = [ "network-interfaces.target" ];
|
||
before = [ "network.target" ];
|
||
wantedBy = [ "network.target" ];
|
||
|
||
unitConfig.ConditionCapability = "CAP_NET_ADMIN";
|
||
|
||
path = [ pkgs.iproute ];
|
||
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
|
||
script =
|
||
''
|
||
# Set the static DNS configuration, if given.
|
||
${pkgs.openresolv}/sbin/resolvconf -m 1 -a static <<EOF
|
||
${optionalString (cfg.nameservers != [] && cfg.domain != "") ''
|
||
domain ${cfg.domain}
|
||
''}
|
||
${optionalString (cfg.search != []) ("search " + concatStringsSep " " cfg.search)}
|
||
${flip concatMapStrings cfg.nameservers (ns: ''
|
||
nameserver ${ns}
|
||
'')}
|
||
EOF
|
||
|
||
# Disable or enable IPv6.
|
||
${optionalString (!config.boot.isContainer) ''
|
||
if [ -e /proc/sys/net/ipv6/conf/all/disable_ipv6 ]; then
|
||
echo ${if cfg.enableIPv6 then "0" else "1"} > /proc/sys/net/ipv6/conf/all/disable_ipv6
|
||
fi
|
||
''}
|
||
|
||
# Set the default gateway.
|
||
${optionalString (cfg.defaultGateway != "") ''
|
||
# FIXME: get rid of "|| true" (necessary to make it idempotent).
|
||
ip route add default via "${cfg.defaultGateway}" ${
|
||
optionalString (cfg.defaultGatewayWindowSize != null)
|
||
"window ${cfg.defaultGatewayWindowSize}"} || true
|
||
''}
|
||
|
||
# Turn on forwarding if any interface has enabled proxy_arp.
|
||
${optionalString (any (i: i.proxyARP) interfaces) ''
|
||
echo 1 > /proc/sys/net/ipv4/ip_forward
|
||
''}
|
||
|
||
# Run any user-specified commands.
|
||
${cfg.localCommands}
|
||
'';
|
||
};
|
||
|
||
# For each interface <foo>, create a job ‘<foo>-cfg.service"
|
||
# that performs static configuration. It has a "wants"
|
||
# dependency on ‘<foo>.service’, which is supposed to create
|
||
# the interface and need not exist (i.e. for hardware
|
||
# interfaces). It has a binds-to dependency on the actual
|
||
# network device, so it only gets started after the interface
|
||
# has appeared, and it's stopped when the interface
|
||
# disappears.
|
||
configureInterface = i:
|
||
let
|
||
ips = i.ip4 ++ optionals cfg.enableIPv6 i.ip6
|
||
++ optional (i.ipAddress != null) {
|
||
address = i.ipAddress;
|
||
prefixLength = i.prefixLength;
|
||
} ++ optional (cfg.enableIPv6 && i.ipv6Address != null) {
|
||
address = i.ipv6Address;
|
||
prefixLength = i.ipv6PrefixLength;
|
||
};
|
||
in
|
||
nameValuePair "${i.name}-cfg"
|
||
{ description = "Configuration of ${i.name}";
|
||
wantedBy = [ "network-interfaces.target" ];
|
||
bindsTo = [ (subsystemDevice i.name) ];
|
||
after = [ (subsystemDevice i.name) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute pkgs.gawk ];
|
||
script =
|
||
''
|
||
echo "bringing up interface..."
|
||
ip link set "${i.name}" up
|
||
''
|
||
+ optionalString (i.macAddress != null)
|
||
''
|
||
echo "setting MAC address to ${i.macAddress}..."
|
||
ip link set "${i.name}" address "${i.macAddress}"
|
||
''
|
||
+ optionalString (i.mtu != null)
|
||
''
|
||
echo "setting MTU to ${toString i.mtu}..."
|
||
ip link set "${i.name}" mtu "${toString i.mtu}"
|
||
''
|
||
|
||
# Ip Setup
|
||
+
|
||
''
|
||
curIps=$(ip -o a show dev "${i.name}" | awk '{print $4}')
|
||
# Only do an add if it's necessary. This is
|
||
# useful when the Nix store is accessed via this
|
||
# interface (e.g. in a QEMU VM test).
|
||
''
|
||
+ flip concatMapStrings (ips) (ip:
|
||
let
|
||
address = "${ip.address}/${toString ip.prefixLength}";
|
||
in
|
||
''
|
||
echo "checking ip ${address}..."
|
||
if ! echo "$curIps" | grep "${address}" >/dev/null 2>&1; then
|
||
if out=$(ip addr add "${address}" dev "${i.name}" 2>&1); then
|
||
echo "added ip ${address}..."
|
||
restart_network_setup=true
|
||
elif ! echo "$out" | grep "File exists" >/dev/null 2>&1; then
|
||
echo "failed to add ${address}"
|
||
exit 1
|
||
fi
|
||
fi
|
||
'')
|
||
+ optionalString (ips != [ ])
|
||
''
|
||
if [ restart_network_setup = true ]; then
|
||
# Ensure that the default gateway remains set.
|
||
# (Flushing this interface may have removed it.)
|
||
${config.systemd.package}/bin/systemctl try-restart --no-block network-setup.service
|
||
fi
|
||
${config.systemd.package}/bin/systemctl start ip-up.target
|
||
''
|
||
+ optionalString i.proxyARP
|
||
''
|
||
echo 1 > /proc/sys/net/ipv4/conf/${i.name}/proxy_arp
|
||
''
|
||
+ optionalString (i.proxyARP && cfg.enableIPv6)
|
||
''
|
||
echo 1 > /proc/sys/net/ipv6/conf/${i.name}/proxy_ndp
|
||
'';
|
||
preStop =
|
||
''
|
||
echo "releasing configured ip's..."
|
||
''
|
||
+ flip concatMapStrings (ips) (ip:
|
||
let
|
||
address = "${ip.address}/${toString ip.prefixLength}";
|
||
in
|
||
''
|
||
echo -n "Deleting ${address}..."
|
||
ip addr del "${address}" dev "${i.name}" >/dev/null 2>&1 || echo -n " Failed"
|
||
echo ""
|
||
'');
|
||
};
|
||
|
||
createTunDevice = i: nameValuePair "${i.name}-netdev"
|
||
{ description = "Virtual Network Interface ${i.name}";
|
||
requires = [ "dev-net-tun.device" ];
|
||
after = [ "dev-net-tun.device" ];
|
||
wantedBy = [ "network.target" (subsystemDevice i.name) ];
|
||
path = [ pkgs.iproute ];
|
||
serviceConfig = {
|
||
Type = "oneshot";
|
||
RemainAfterExit = true;
|
||
};
|
||
script = ''
|
||
ip tuntap add dev "${i.name}" \
|
||
${optionalString (i.virtualType != null) "mode ${i.virtualType}"} \
|
||
user "${i.virtualOwner}"
|
||
'';
|
||
postStop = ''
|
||
ip link del ${i.name}
|
||
'';
|
||
};
|
||
|
||
createBridgeDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = map subsystemDevice v.interfaces;
|
||
in
|
||
{ description = "Bridge Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = deps;
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.bridge_utils pkgs.iproute ];
|
||
script =
|
||
''
|
||
# Remove Dead Interfaces
|
||
ip link show "${n}" >/dev/null 2>&1 && ip link delete "${n}"
|
||
|
||
brctl addbr "${n}"
|
||
|
||
# Set bridge's hello time to 0 to avoid startup delays.
|
||
brctl setfd "${n}" 0
|
||
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
brctl addif "${n}" "${i}"
|
||
ip link set "${i}" up
|
||
ip addr flush dev "${i}"
|
||
|
||
echo "bringing up network device ${n}..."
|
||
ip link set "${n}" up
|
||
'')}
|
||
|
||
# !!! Should delete (brctl delif) any interfaces that
|
||
# no longer belong to the bridge.
|
||
'';
|
||
postStop =
|
||
''
|
||
ip link set "${n}" down
|
||
brctl delbr "${n}"
|
||
'';
|
||
});
|
||
|
||
createBondDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = map subsystemDevice v.interfaces;
|
||
in
|
||
{ description = "Bond Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = deps;
|
||
before = [ "${n}-cfg.service" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.ifenslave pkgs.iproute ];
|
||
script = ''
|
||
ip link add name "${n}" type bond
|
||
|
||
# !!! There must be a better way to wait for the interface
|
||
while [ ! -d /sys/class/net/${n} ]; do sleep 0.1; done;
|
||
|
||
# Ensure the link is down so that we can set options
|
||
ip link set "${n}" down
|
||
|
||
# Set the miimon and mode options
|
||
${optionalString (v.miimon != null)
|
||
"echo \"${toString v.miimon}\" >/sys/class/net/${n}/bonding/miimon"}
|
||
${optionalString (v.mode != null)
|
||
"echo \"${v.mode}\" >/sys/class/net/${n}/bonding/mode"}
|
||
${optionalString (v.lacp_rate != null)
|
||
"echo \"${v.lacp_rate}\" >/sys/class/net/${n}/bonding/lacp_rate"}
|
||
${optionalString (v.xmit_hash_policy != null)
|
||
"echo \"${v.xmit_hash_policy}\" >/sys/class/net/${n}/bonding/xmit_hash_policy"}
|
||
|
||
# Bring up the bond and enslave the specified interfaces
|
||
ip link set "${n}" up
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ifenslave "${n}" "${i}"
|
||
'')}
|
||
'';
|
||
postStop = ''
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ifenslave -d "${n}" "${i}" >/dev/null 2>&1 || true
|
||
'')}
|
||
ip link set "${n}" down >/dev/null 2>&1 || true
|
||
ip link del "${n}" >/dev/null 2>&1 || true
|
||
'';
|
||
});
|
||
|
||
createSitDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = optional (v.dev != null) (subsystemDevice v.dev);
|
||
in
|
||
{ description = "6-to-4 Tunnel Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = deps;
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show "${n}" >/dev/null 2>&1 && ip link delete "${n}"
|
||
ip link add name "${n}" type sit \
|
||
${optionalString (v.remote != null) "remote \"${v.remote}\""} \
|
||
${optionalString (v.local != null) "local \"${v.local}\""} \
|
||
${optionalString (v.ttl != null) "ttl ${toString v.ttl}"} \
|
||
${optionalString (v.dev != null) "dev \"${v.dev}\""}
|
||
ip link set "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete "${n}"
|
||
'';
|
||
});
|
||
|
||
createVlanDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = [ (subsystemDevice v.interface) ];
|
||
in
|
||
{ description = "Vlan Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = deps;
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show "${n}" >/dev/null 2>&1 && ip link delete "${n}"
|
||
ip link add link "${v.interface}" name "${n}" type vlan id "${toString v.id}"
|
||
ip link set "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete "${n}"
|
||
'';
|
||
});
|
||
|
||
in listToAttrs (
|
||
map configureInterface interfaces ++
|
||
map createTunDevice (filter (i: i.virtual) interfaces))
|
||
// mapAttrs' createBridgeDevice cfg.bridges
|
||
// mapAttrs' createBondDevice cfg.bonds
|
||
// mapAttrs' createSitDevice cfg.sits
|
||
// mapAttrs' createVlanDevice cfg.vlans
|
||
// { "network-setup" = networkSetup; };
|
||
|
||
# Set the host and domain names in the activation script. Don't
|
||
# clear it if it's not configured in the NixOS configuration,
|
||
# since it may have been set by dhcpcd in the meantime.
|
||
system.activationScripts.hostname =
|
||
optionalString (cfg.hostName != "") ''
|
||
hostname "${cfg.hostName}"
|
||
'';
|
||
system.activationScripts.domain =
|
||
optionalString (cfg.domain != "") ''
|
||
domainname "${cfg.domain}"
|
||
'';
|
||
|
||
environment.etc = mkIf (cfg.hostId != null)
|
||
[
|
||
{
|
||
target = "hostid";
|
||
source = pkgs.runCommand "gen-hostid" {} ''
|
||
hi="${cfg.hostId}"
|
||
${if pkgs.stdenv.isBigEndian then ''
|
||
echo -ne "\x''${hi:0:2}\x''${hi:2:2}\x''${hi:4:2}\x''${hi:6:2}" > $out
|
||
'' else ''
|
||
echo -ne "\x''${hi:6:2}\x''${hi:4:2}\x''${hi:2:2}\x''${hi:0:2}" > $out
|
||
''}
|
||
'';
|
||
}
|
||
];
|
||
|
||
services.udev.extraRules =
|
||
''
|
||
KERNEL=="tun", TAG+="systemd"
|
||
'';
|
||
|
||
};
|
||
|
||
}
|