1213 lines
41 KiB
Nix
1213 lines
41 KiB
Nix
{ config, options, lib, pkgs, utils, stdenv, ... }:
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with lib;
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with utils;
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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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slaves = concatMap (i: i.interfaces) (attrValues cfg.bonds)
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++ concatMap (i: i.interfaces) (attrValues cfg.bridges)
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++ concatMap (i: i.interfaces) (attrValues cfg.vswitches);
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slaveIfs = map (i: cfg.interfaces.${i}) (filter (i: cfg.interfaces ? ${i}) slaves);
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rstpBridges = flip filterAttrs cfg.bridges (_: { rstp, ... }: rstp);
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needsMstpd = rstpBridges != { };
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bridgeStp = optional needsMstpd (pkgs.writeTextFile {
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name = "bridge-stp";
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executable = true;
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destination = "/bin/bridge-stp";
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text = ''
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#!${pkgs.runtimeShell} -e
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export PATH="${pkgs.mstpd}/bin"
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BRIDGES=(${concatStringsSep " " (attrNames rstpBridges)})
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for BRIDGE in $BRIDGES; do
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if [ "$BRIDGE" = "$1" ]; then
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if [ "$2" = "start" ]; then
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mstpctl addbridge "$BRIDGE"
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exit 0
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elif [ "$2" = "stop" ]; then
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mstpctl delbridge "$BRIDGE"
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exit 0
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fi
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exit 1
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fi
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done
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exit 1
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'';
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});
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# Collect all interfaces that are defined for a device
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# as device:interface key:value pairs.
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wlanDeviceInterfaces =
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let
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allDevices = unique (mapAttrsToList (_: v: v.device) cfg.wlanInterfaces);
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interfacesOfDevice = d: filterAttrs (_: v: v.device == d) cfg.wlanInterfaces;
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in
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genAttrs allDevices (d: interfacesOfDevice d);
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# Convert device:interface key:value pairs into a list, and if it exists,
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# place the interface which is named after the device at the beginning.
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wlanListDeviceFirst = device: interfaces:
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if hasAttr device interfaces
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then mapAttrsToList (n: v: v//{_iName=n;}) (filterAttrs (n: _: n==device) interfaces) ++ mapAttrsToList (n: v: v//{_iName=n;}) (filterAttrs (n: _: n!=device) interfaces)
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else mapAttrsToList (n: v: v // {_iName = n;}) interfaces;
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# udev script that configures a physical wlan device and adds virtual interfaces
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wlanDeviceUdevScript = device: interfaceList: pkgs.writeScript "wlan-${device}-udev-script" ''
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#!${pkgs.runtimeShell}
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# Change the wireless phy device to a predictable name.
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if [ -e "/sys/class/net/${device}/phy80211/name" ]; then
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${pkgs.iw}/bin/iw phy `${pkgs.coreutils}/bin/cat /sys/class/net/${device}/phy80211/name` set name ${device} || true
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fi
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# Crate new, virtual interfaces and configure them at the same time
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${flip concatMapStrings (drop 1 interfaceList) (i: ''
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${pkgs.iw}/bin/iw dev ${device} interface add ${i._iName} type ${i.type} \
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${optionalString (i.type == "mesh" && i.meshID != null) "mesh_id ${i.meshID}"} \
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${optionalString (i.type == "monitor" && i.flags != null) "flags ${i.flags}"} \
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${optionalString (i.type == "managed" && i.fourAddr != null) "4addr ${if i.fourAddr then "on" else "off"}"} \
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${optionalString (i.mac != null) "addr ${i.mac}"}
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'')}
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# Reconfigure and rename the default interface that already exists
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${flip concatMapStrings (take 1 interfaceList) (i: ''
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${pkgs.iw}/bin/iw dev ${device} set type ${i.type}
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${optionalString (i.type == "mesh" && i.meshID != null) "${pkgs.iw}/bin/iw dev ${device} set meshid ${i.meshID}"}
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${optionalString (i.type == "monitor" && i.flags != null) "${pkgs.iw}/bin/iw dev ${device} set monitor ${i.flags}"}
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${optionalString (i.type == "managed" && i.fourAddr != null) "${pkgs.iw}/bin/iw dev ${device} set 4addr ${if i.fourAddr then "on" else "off"}"}
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${optionalString (i.mac != null) "${pkgs.iproute}/bin/ip link set dev ${device} address ${i.mac}"}
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${optionalString (device != i._iName) "${pkgs.iproute}/bin/ip link set dev ${device} name ${i._iName}"}
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'')}
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'';
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# We must escape interfaces due to the systemd interpretation
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subsystemDevice = interface:
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"sys-subsystem-net-devices-${escapeSystemdPath interface}.device";
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addrOpts = v:
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assert v == 4 || v == 6;
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{ options = {
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address = mkOption {
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type = types.str;
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description = ''
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IPv${toString v} address of the interface. Leave empty to configure the
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interface using DHCP.
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'';
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};
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prefixLength = mkOption {
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type = types.addCheck types.int (n: n >= 0 && n <= (if v == 4 then 32 else 128));
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description = ''
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Subnet mask of the interface, specified as the number of
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bits in the prefix (<literal>${if v == 4 then "24" else "64"}</literal>).
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'';
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};
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};
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};
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routeOpts = v:
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{ options = {
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address = mkOption {
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type = types.str;
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description = "IPv${toString v} address of the network.";
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};
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prefixLength = mkOption {
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type = types.addCheck types.int (n: n >= 0 && n <= (if v == 4 then 32 else 128));
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description = ''
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Subnet mask of the network, specified as the number of
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bits in the prefix (<literal>${if v == 4 then "24" else "64"}</literal>).
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'';
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};
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via = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = "IPv${toString v} address of the next hop.";
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};
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options = mkOption {
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type = types.attrsOf types.str;
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default = { };
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example = { mtu = "1492"; window = "524288"; };
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description = ''
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Other route options. See the symbol <literal>OPTIONS</literal>
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in the <literal>ip-route(8)</literal> manual page for the details.
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'';
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};
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};
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};
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gatewayCoerce = address: { inherit address; };
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gatewayOpts = { ... }: {
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options = {
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address = mkOption {
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type = types.str;
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description = "The default gateway address.";
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};
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interface = mkOption {
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type = types.nullOr types.str;
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default = null;
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example = "enp0s3";
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description = "The default gateway interface.";
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};
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metric = mkOption {
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type = types.nullOr types.int;
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default = null;
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example = 42;
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description = "The default gateway metric/preference.";
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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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preferTempAddress = mkOption {
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type = types.bool;
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default = cfg.enableIPv6;
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defaultText = literalExample "config.networking.enableIPv6";
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description = ''
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When using SLAAC prefer a temporary (IPv6) address over the EUI-64
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address for originating connections. This is used to reduce tracking.
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'';
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};
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useDHCP = mkOption {
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type = types.nullOr types.bool;
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default = null;
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description = ''
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Whether this interface should be configured with dhcp.
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Null implies the old behavior which depends on whether ip addresses
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are specified or not.
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'';
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};
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ipv4.addresses = 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 = with types; listOf (submodule (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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ipv6.addresses = 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 = with types; listOf (submodule (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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ipv4.routes = mkOption {
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default = [];
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example = [
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{ address = "10.0.0.0"; prefixLength = 16; }
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{ address = "192.168.2.0"; prefixLength = 24; via = "192.168.1.1"; }
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];
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type = with types; listOf (submodule (routeOpts 4));
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description = ''
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List of extra IPv4 static routes that will be assigned to the interface.
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'';
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};
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ipv6.routes = mkOption {
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default = [];
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example = [
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{ address = "fdfd:b3f0::"; prefixLength = 48; }
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{ address = "2001:1470:fffd:2098::"; prefixLength = 64; via = "fdfd:b3f0::1"; }
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];
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type = with types; listOf (submodule (routeOpts 6));
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description = ''
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List of extra IPv6 static routes that will be assigned to the interface.
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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 and 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 = if hasPrefix "tun" name then "tun" else "tap";
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defaultText = literalExample ''if hasPrefix "tun" name then "tun" else "tap"'';
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type = with types; enum [ "tun" "tap" ];
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description = ''
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The type of interface to create.
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The default is TUN for an interface name starting
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with "tun", otherwise TAP.
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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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# Renamed or removed options
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imports =
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let
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defined = x: x != "_mkMergedOptionModule";
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in [
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(mkRenamedOptionModule [ "ip4" ] [ "ipv4" "addresses"])
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(mkRenamedOptionModule [ "ip6" ] [ "ipv6" "addresses"])
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(mkRemovedOptionModule [ "subnetMask" ] ''
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Supply a prefix length instead; use option
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networking.interfaces.<name>.ipv{4,6}.addresses'')
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(mkMergedOptionModule
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[ [ "ipAddress" ] [ "prefixLength" ] ]
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[ "ipv4" "addresses" ]
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(cfg: with cfg;
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optional (defined ipAddress && defined prefixLength)
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{ address = ipAddress; prefixLength = prefixLength; }))
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(mkMergedOptionModule
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[ [ "ipv6Address" ] [ "ipv6PrefixLength" ] ]
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[ "ipv6" "addresses" ]
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(cfg: with cfg;
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optional (defined ipv6Address && defined ipv6PrefixLength)
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{ address = ipv6Address; prefixLength = ipv6PrefixLength; }))
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({ options.warnings = options.warnings; })
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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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type = types.str;
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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 commands:
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<literal>cksum /etc/machine-id | while read c rest; do printf "%x" $c; done</literal>
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(this derives it from the machine-id that systemd generates) or
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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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type = types.bool;
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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 = null;
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example = {
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address = "131.211.84.1";
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interface = "enp3s0";
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};
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type = types.nullOr (types.coercedTo types.str gatewayCoerce (types.submodule gatewayOpts));
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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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It can be specified as a string or an option set along with a network interface.
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'';
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};
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networking.defaultGateway6 = mkOption {
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default = null;
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example = {
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address = "2001:4d0:1e04:895::1";
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interface = "enp3s0";
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};
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type = types.nullOr (types.coercedTo types.str gatewayCoerce (types.submodule gatewayOpts));
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description = ''
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The default ipv6 gateway. It can be left empty if it is auto-detected through DHCP.
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It can be specified as a string or an option set along with a network interface.
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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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type = types.listOf types.str;
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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 = null;
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example = "home";
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type = types.nullOr types.str;
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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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type = types.lines;
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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.ipv4.addresses = [ {
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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 = with types; loaOf (submodule interfaceOpts);
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};
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networking.vswitches = mkOption {
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default = { };
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example =
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{ vs0.interfaces = [ "eth0" "eth1" ];
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vs1.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 Open vSwitches that connect
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physical networks together. The value of this option is an
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attribute set. Each attribute specifies a vswitch, with the
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attribute name specifying the name of the vswitch's network
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interface.
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'';
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type = with types; attrsOf (submodule {
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|
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options = {
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interfaces = mkOption {
|
|
example = [ "eth0" "eth1" ];
|
|
type = types.listOf types.str;
|
|
description =
|
|
"The physical network interfaces connected by the vSwitch.";
|
|
};
|
|
|
|
controllers = mkOption {
|
|
type = types.listOf types.str;
|
|
default = [];
|
|
example = [ "ptcp:6653:[::1]" ];
|
|
description = ''
|
|
Specify the controller targets. For the allowed options see <literal>man 8 ovs-vsctl</literal>.
|
|
'';
|
|
};
|
|
|
|
openFlowRules = mkOption {
|
|
type = types.lines;
|
|
default = "";
|
|
example = ''
|
|
actions=normal
|
|
'';
|
|
description = ''
|
|
OpenFlow rules to insert into the Open vSwitch. All <literal>openFlowRules</literal> are
|
|
loaded with <literal>ovs-ofctl</literal> within one atomic operation.
|
|
'';
|
|
};
|
|
|
|
extraOvsctlCmds = mkOption {
|
|
type = types.lines;
|
|
default = "";
|
|
example = ''
|
|
set-fail-mode <switch_name> secure
|
|
set Bridge <switch_name> stp_enable=true
|
|
'';
|
|
description = ''
|
|
Commands to manipulate the Open vSwitch database. Every line executed with <literal>ovs-vsctl</literal>.
|
|
All commands are bundled together with the operations for adding the interfaces
|
|
into one atomic operation.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
|
|
};
|
|
|
|
networking.bridges = mkOption {
|
|
default = { };
|
|
example =
|
|
{ br0.interfaces = [ "eth0" "eth1" ];
|
|
br1.interfaces = [ "eth2" "wlan0" ];
|
|
};
|
|
description =
|
|
''
|
|
This option allows you to define Ethernet bridge devices
|
|
that connect physical networks together. The value of this
|
|
option is an attribute set. Each attribute specifies a
|
|
bridge, with the attribute name specifying the name of the
|
|
bridge's network interface.
|
|
'';
|
|
|
|
type = with types; attrsOf (submodule {
|
|
|
|
options = {
|
|
|
|
interfaces = mkOption {
|
|
example = [ "eth0" "eth1" ];
|
|
type = types.listOf types.str;
|
|
description =
|
|
"The physical network interfaces connected by the bridge.";
|
|
};
|
|
|
|
rstp = mkOption {
|
|
default = false;
|
|
type = types.bool;
|
|
description = "Whether the bridge interface should enable rstp.";
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
|
|
};
|
|
|
|
networking.bonds =
|
|
let
|
|
driverOptionsExample = {
|
|
miimon = "100";
|
|
mode = "active-backup";
|
|
};
|
|
in mkOption {
|
|
default = { };
|
|
example = literalExample {
|
|
bond0 = {
|
|
interfaces = [ "eth0" "wlan0" ];
|
|
driverOptions = driverOptionsExample;
|
|
};
|
|
anotherBond.interfaces = [ "enp4s0f0" "enp4s0f1" "enp5s0f0" "enp5s0f1" ];
|
|
};
|
|
description = ''
|
|
This option allows you to define bond devices that aggregate multiple,
|
|
underlying networking interfaces together. The value of this option is
|
|
an attribute set. Each attribute specifies a bond, with the attribute
|
|
name specifying the name of the bond's network interface
|
|
'';
|
|
|
|
type = with types; attrsOf (submodule {
|
|
|
|
options = {
|
|
|
|
interfaces = mkOption {
|
|
example = [ "enp4s0f0" "enp4s0f1" "wlan0" ];
|
|
type = types.listOf types.str;
|
|
description = "The interfaces to bond together";
|
|
};
|
|
|
|
driverOptions = mkOption {
|
|
type = types.attrsOf types.str;
|
|
default = {};
|
|
example = literalExample driverOptionsExample;
|
|
description = ''
|
|
Options for the bonding driver.
|
|
Documentation can be found in
|
|
<link xlink:href="https://www.kernel.org/doc/Documentation/networking/bonding.txt" />
|
|
'';
|
|
|
|
};
|
|
|
|
lacp_rate = mkOption {
|
|
default = null;
|
|
example = "fast";
|
|
type = types.nullOr types.str;
|
|
description = ''
|
|
DEPRECATED, use `driverOptions`.
|
|
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 = ''
|
|
DEPRECATED, use `driverOptions`.
|
|
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 = ''
|
|
DEPRECATED, use `driverOptions`.
|
|
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 = ''
|
|
DEPRECATED, use `driverOptions`.
|
|
Selects the transmit hash policy to use for slave selection in
|
|
balance-xor, 802.3ad, and tlb modes.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
};
|
|
|
|
networking.macvlans = mkOption {
|
|
default = { };
|
|
example = literalExample {
|
|
wan = {
|
|
interface = "enp2s0";
|
|
mode = "vepa";
|
|
};
|
|
};
|
|
description = ''
|
|
This option allows you to define macvlan interfaces which should
|
|
be automatically created.
|
|
'';
|
|
type = with types; attrsOf (submodule {
|
|
options = {
|
|
|
|
interface = mkOption {
|
|
example = "enp4s0";
|
|
type = types.str;
|
|
description = "The interface the macvlan will transmit packets through.";
|
|
};
|
|
|
|
mode = mkOption {
|
|
default = null;
|
|
type = types.nullOr types.str;
|
|
example = "vepa";
|
|
description = "The mode of the macvlan device.";
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
};
|
|
|
|
networking.sits = mkOption {
|
|
default = { };
|
|
example = literalExample {
|
|
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.
|
|
'';
|
|
type = with types; attrsOf (submodule {
|
|
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 = literalExample {
|
|
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 = with types; attrsOf (submodule {
|
|
|
|
options = {
|
|
|
|
id = mkOption {
|
|
example = 1;
|
|
type = types.int;
|
|
description = "The vlan identifier";
|
|
};
|
|
|
|
interface = mkOption {
|
|
example = "enp4s0";
|
|
type = types.str;
|
|
description = "The interface the vlan will transmit packets through.";
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
|
|
};
|
|
|
|
networking.wlanInterfaces = mkOption {
|
|
default = { };
|
|
example = literalExample {
|
|
"wlan-station0" = {
|
|
device = "wlp6s0";
|
|
};
|
|
"wlan-adhoc0" = {
|
|
type = "ibss";
|
|
device = "wlp6s0";
|
|
mac = "02:00:00:00:00:01";
|
|
};
|
|
"wlan-p2p0" = {
|
|
device = "wlp6s0";
|
|
mac = "02:00:00:00:00:02";
|
|
};
|
|
"wlan-ap0" = {
|
|
device = "wlp6s0";
|
|
mac = "02:00:00:00:00:03";
|
|
};
|
|
};
|
|
description =
|
|
''
|
|
Creating multiple WLAN interfaces on top of one physical WLAN device (NIC).
|
|
|
|
The name of the WLAN interface corresponds to the name of the attribute.
|
|
A NIC is referenced by the persistent device name of the WLAN interface that
|
|
<literal>udev</literal> assigns to a NIC by default.
|
|
If a NIC supports multiple WLAN interfaces, then the one NIC can be used as
|
|
<literal>device</literal> for multiple WLAN interfaces.
|
|
If a NIC is used for creating WLAN interfaces, then the default WLAN interface
|
|
with a persistent device name form <literal>udev</literal> is not created.
|
|
A WLAN interface with the persistent name assigned from <literal>udev</literal>
|
|
would have to be created explicitly.
|
|
'';
|
|
|
|
type = with types; attrsOf (submodule {
|
|
|
|
options = {
|
|
|
|
device = mkOption {
|
|
type = types.string;
|
|
example = "wlp6s0";
|
|
description = "The name of the underlying hardware WLAN device as assigned by <literal>udev</literal>.";
|
|
};
|
|
|
|
type = mkOption {
|
|
type = types.enum [ "managed" "ibss" "monitor" "mesh" "wds" ];
|
|
default = "managed";
|
|
example = "ibss";
|
|
description = ''
|
|
The type of the WLAN interface.
|
|
The type has to be supported by the underlying hardware of the device.
|
|
'';
|
|
};
|
|
|
|
meshID = mkOption {
|
|
type = types.nullOr types.string;
|
|
default = null;
|
|
description = "MeshID of interface with type <literal>mesh</literal>.";
|
|
};
|
|
|
|
flags = mkOption {
|
|
type = with types; nullOr (enum [ "none" "fcsfail" "control" "otherbss" "cook" "active" ]);
|
|
default = null;
|
|
example = "control";
|
|
description = ''
|
|
Flags for interface of type <literal>monitor</literal>.
|
|
'';
|
|
};
|
|
|
|
fourAddr = mkOption {
|
|
type = types.nullOr types.bool;
|
|
default = null;
|
|
description = "Whether to enable <literal>4-address mode</literal> with type <literal>managed</literal>.";
|
|
};
|
|
|
|
mac = mkOption {
|
|
type = types.nullOr types.str;
|
|
default = null;
|
|
example = "02:00:00:00:00:01";
|
|
description = ''
|
|
MAC address to use for the device. If <literal>null</literal>, then the MAC of the
|
|
underlying hardware WLAN device is used.
|
|
|
|
INFO: Locally administered MAC addresses are of the form:
|
|
<itemizedlist>
|
|
<listitem><para>x2:xx:xx:xx:xx:xx</para></listitem>
|
|
<listitem><para>x6:xx:xx:xx:xx:xx</para></listitem>
|
|
<listitem><para>xA:xx:xx:xx:xx:xx</para></listitem>
|
|
<listitem><para>xE:xx:xx:xx:xx:xx</para></listitem>
|
|
</itemizedlist>
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
});
|
|
|
|
};
|
|
|
|
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.
|
|
'';
|
|
};
|
|
|
|
networking.useNetworkd = mkOption {
|
|
default = false;
|
|
type = types.bool;
|
|
description = ''
|
|
Whether we should use networkd as the network configuration backend or
|
|
the legacy script based system. Note that this option is experimental,
|
|
enable at your own risk.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = {
|
|
|
|
warnings = concatMap (i: i.warnings) interfaces;
|
|
|
|
assertions =
|
|
(flip map interfaces (i: {
|
|
# With the linux kernel, interface name length is limited by IFNAMSIZ
|
|
# to 16 bytes, including the trailing null byte.
|
|
# See include/linux/if.h in the kernel sources
|
|
assertion = stringLength i.name < 16;
|
|
message = ''
|
|
The name of networking.interfaces."${i.name}" is too long, it needs to be less than 16 characters.
|
|
'';
|
|
})) ++ (flip map slaveIfs (i: {
|
|
assertion = i.ipv4.addresses == [ ] && i.ipv6.addresses == [ ];
|
|
message = ''
|
|
The networking.interfaces."${i.name}" must not have any defined ips when it is a slave.
|
|
'';
|
|
})) ++ (flip map interfaces (i: {
|
|
assertion = i.preferTempAddress -> cfg.enableIPv6;
|
|
message = ''
|
|
Temporary addresses are only needed when IPv6 is enabled.
|
|
'';
|
|
})) ++ [
|
|
{
|
|
assertion = cfg.hostId == null || (stringLength cfg.hostId == 8 && isHexString cfg.hostId);
|
|
message = "Invalid value given to the networking.hostId option.";
|
|
}
|
|
];
|
|
|
|
boot.kernelModules = [ ]
|
|
++ optional cfg.enableIPv6 "ipv6"
|
|
++ optional hasVirtuals "tun"
|
|
++ optional hasSits "sit"
|
|
++ optional hasBonds "bonding";
|
|
|
|
boot.extraModprobeConfig =
|
|
# This setting is intentional as it prevents default bond devices
|
|
# from being created.
|
|
optionalString hasBonds "options bonding max_bonds=0";
|
|
|
|
boot.kernel.sysctl = {
|
|
"net.ipv6.conf.all.disable_ipv6" = mkDefault (!cfg.enableIPv6);
|
|
"net.ipv6.conf.default.disable_ipv6" = mkDefault (!cfg.enableIPv6);
|
|
"net.ipv6.conf.all.forwarding" = mkDefault (any (i: i.proxyARP) interfaces);
|
|
} // listToAttrs (flip concatMap (filter (i: i.proxyARP) interfaces)
|
|
(i: flip map [ "4" "6" ] (v: nameValuePair "net.ipv${v}.conf.${i.name}.proxy_arp" true)))
|
|
// listToAttrs (flip map (filter (i: i.preferTempAddress) interfaces)
|
|
(i: nameValuePair "net.ipv6.conf.${i.name}.use_tempaddr" 2));
|
|
|
|
# Capabilities won't work unless we have at-least a 4.3 Linux
|
|
# kernel because we need the ambient capability
|
|
security.wrappers = if (versionAtLeast (getVersion config.boot.kernelPackages.kernel) "4.3") then {
|
|
ping = {
|
|
source = "${pkgs.iputils.out}/bin/ping";
|
|
capabilities = "cap_net_raw+p";
|
|
};
|
|
} else {
|
|
ping.source = "${pkgs.iputils.out}/bin/ping";
|
|
};
|
|
|
|
# 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 "${cfg.hostName}"
|
|
'';
|
|
system.activationScripts.domain =
|
|
optionalString (cfg.domain != null) ''
|
|
domainname "${cfg.domain}"
|
|
'';
|
|
|
|
environment.etc."hostid" = mkIf (cfg.hostId != null)
|
|
{ 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
|
|
''}
|
|
'';
|
|
};
|
|
|
|
# static hostname configuration needed for hostnamectl and the
|
|
# org.freedesktop.hostname1 dbus service (both provided by systemd)
|
|
environment.etc."hostname" = mkIf (cfg.hostName != "")
|
|
{
|
|
text = cfg.hostName + "\n";
|
|
};
|
|
|
|
environment.systemPackages =
|
|
[ pkgs.host
|
|
pkgs.iproute
|
|
pkgs.iputils
|
|
pkgs.nettools
|
|
pkgs.openresolv
|
|
]
|
|
++ optionals config.networking.wireless.enable [
|
|
pkgs.wirelesstools # FIXME: obsolete?
|
|
pkgs.iw
|
|
pkgs.rfkill
|
|
]
|
|
++ bridgeStp;
|
|
|
|
# The network-interfaces target is kept for backwards compatibility.
|
|
# New modules must NOT use it.
|
|
systemd.targets."network-interfaces" =
|
|
{ description = "All Network Interfaces (deprecated)";
|
|
wantedBy = [ "network.target" ];
|
|
before = [ "network.target" ];
|
|
after = [ "network-pre.target" ];
|
|
unitConfig.X-StopOnReconfiguration = true;
|
|
};
|
|
|
|
systemd.services = {
|
|
network-local-commands = {
|
|
description = "Extra networking commands.";
|
|
before = [ "network.target" ];
|
|
wantedBy = [ "network.target" ];
|
|
after = [ "network-pre.target" ];
|
|
unitConfig.ConditionCapability = "CAP_NET_ADMIN";
|
|
path = [ pkgs.iproute ];
|
|
serviceConfig.Type = "oneshot";
|
|
serviceConfig.RemainAfterExit = true;
|
|
script = ''
|
|
# Run any user-specified commands.
|
|
${cfg.localCommands}
|
|
'';
|
|
};
|
|
} // (listToAttrs (flip map interfaces (i:
|
|
let
|
|
deviceDependency = if config.boot.isContainer
|
|
then []
|
|
else [ (subsystemDevice i.name) ];
|
|
in
|
|
nameValuePair "network-link-${i.name}"
|
|
{ description = "Link configuration of ${i.name}";
|
|
wantedBy = [ "network-interfaces.target" ];
|
|
before = [ "network-interfaces.target" ];
|
|
bindsTo = deviceDependency;
|
|
after = [ "network-pre.target" ] ++ deviceDependency;
|
|
path = [ pkgs.iproute ];
|
|
serviceConfig = {
|
|
Type = "oneshot";
|
|
RemainAfterExit = true;
|
|
};
|
|
script =
|
|
''
|
|
echo "Configuring link..."
|
|
'' + 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 "${toString i.mtu}"
|
|
'' + ''
|
|
echo -n "bringing up interface... "
|
|
ip link set "${i.name}" up && echo "done" || (echo "failed"; exit 1)
|
|
'';
|
|
})));
|
|
|
|
services.mstpd = mkIf needsMstpd { enable = true; };
|
|
|
|
virtualisation.vswitch = mkIf (cfg.vswitches != { }) { enable = true; };
|
|
|
|
services.udev.packages = mkIf (cfg.wlanInterfaces != {}) [
|
|
(pkgs.writeTextFile {
|
|
name = "99-zzz-40-wlanInterfaces.rules";
|
|
destination = "/etc/udev/rules.d/99-zzz-40-wlanInterfaces.rules";
|
|
text =
|
|
let
|
|
# Collect all interfaces that are defined for a device
|
|
# as device:interface key:value pairs.
|
|
wlanDeviceInterfaces =
|
|
let
|
|
allDevices = unique (mapAttrsToList (_: v: v.device) cfg.wlanInterfaces);
|
|
interfacesOfDevice = d: filterAttrs (_: v: v.device == d) cfg.wlanInterfaces;
|
|
in
|
|
genAttrs allDevices (d: interfacesOfDevice d);
|
|
|
|
# Convert device:interface key:value pairs into a list, and if it exists,
|
|
# place the interface which is named after the device at the beginning.
|
|
wlanListDeviceFirst = device: interfaces:
|
|
if hasAttr device interfaces
|
|
then mapAttrsToList (n: v: v//{_iName=n;}) (filterAttrs (n: _: n==device) interfaces) ++ mapAttrsToList (n: v: v//{_iName=n;}) (filterAttrs (n: _: n!=device) interfaces)
|
|
else mapAttrsToList (n: v: v // {_iName = n;}) interfaces;
|
|
|
|
# Udev script to execute for the default WLAN interface with the persistend udev name.
|
|
# The script creates the required, new WLAN interfaces interfaces and configures the
|
|
# existing, default interface.
|
|
curInterfaceScript = device: current: new: pkgs.writeScript "udev-run-script-wlan-interfaces-${device}.sh" ''
|
|
#!${pkgs.runtimeShell}
|
|
# Change the wireless phy device to a predictable name.
|
|
${pkgs.iw}/bin/iw phy `${pkgs.coreutils}/bin/cat /sys/class/net/$INTERFACE/phy80211/name` set name ${device}
|
|
|
|
# Add new WLAN interfaces
|
|
${flip concatMapStrings new (i: ''
|
|
${pkgs.iw}/bin/iw phy ${device} interface add ${i._iName} type managed
|
|
'')}
|
|
|
|
# Configure the current interface
|
|
${pkgs.iw}/bin/iw dev ${device} set type ${current.type}
|
|
${optionalString (current.type == "mesh" && current.meshID!=null) "${pkgs.iw}/bin/iw dev ${device} set meshid ${current.meshID}"}
|
|
${optionalString (current.type == "monitor" && current.flags!=null) "${pkgs.iw}/bin/iw dev ${device} set monitor ${current.flags}"}
|
|
${optionalString (current.type == "managed" && current.fourAddr!=null) "${pkgs.iw}/bin/iw dev ${device} set 4addr ${if current.fourAddr then "on" else "off"}"}
|
|
${optionalString (current.mac != null) "${pkgs.iproute}/bin/ip link set dev ${device} address ${current.mac}"}
|
|
'';
|
|
|
|
# Udev script to execute for a new WLAN interface. The script configures the new WLAN interface.
|
|
newInterfaceScript = device: new: pkgs.writeScript "udev-run-script-wlan-interfaces-${new._iName}.sh" ''
|
|
#!${pkgs.runtimeShell}
|
|
# Configure the new interface
|
|
${pkgs.iw}/bin/iw dev ${new._iName} set type ${new.type}
|
|
${optionalString (new.type == "mesh" && new.meshID!=null) "${pkgs.iw}/bin/iw dev ${device} set meshid ${new.meshID}"}
|
|
${optionalString (new.type == "monitor" && new.flags!=null) "${pkgs.iw}/bin/iw dev ${device} set monitor ${new.flags}"}
|
|
${optionalString (new.type == "managed" && new.fourAddr!=null) "${pkgs.iw}/bin/iw dev ${device} set 4addr ${if new.fourAddr then "on" else "off"}"}
|
|
${optionalString (new.mac != null) "${pkgs.iproute}/bin/ip link set dev ${device} address ${new.mac}"}
|
|
'';
|
|
|
|
# Udev attributes for systemd to name the device and to create a .device target.
|
|
systemdAttrs = n: ''NAME:="${n}", ENV{INTERFACE}:="${n}", ENV{SYSTEMD_ALIAS}:="/sys/subsystem/net/devices/${n}", TAG+="systemd"'';
|
|
in
|
|
flip (concatMapStringsSep "\n") (attrNames wlanDeviceInterfaces) (device:
|
|
let
|
|
interfaces = wlanListDeviceFirst device wlanDeviceInterfaces."${device}";
|
|
curInterface = elemAt interfaces 0;
|
|
newInterfaces = drop 1 interfaces;
|
|
in ''
|
|
# It is important to have that rule first as overwriting the NAME attribute also prevents the
|
|
# next rules from matching.
|
|
${flip (concatMapStringsSep "\n") (wlanListDeviceFirst device wlanDeviceInterfaces."${device}") (interface:
|
|
''ACTION=="add", SUBSYSTEM=="net", ENV{DEVTYPE}=="wlan", ENV{INTERFACE}=="${interface._iName}", ${systemdAttrs interface._iName}, RUN+="${newInterfaceScript device interface}"'')}
|
|
|
|
# Add the required, new WLAN interfaces to the default WLAN interface with the
|
|
# persistent, default name as assigned by udev.
|
|
ACTION=="add", SUBSYSTEM=="net", ENV{DEVTYPE}=="wlan", NAME=="${device}", ${systemdAttrs curInterface._iName}, RUN+="${curInterfaceScript device curInterface newInterfaces}"
|
|
# Generate the same systemd events for both 'add' and 'move' udev events.
|
|
ACTION=="move", SUBSYSTEM=="net", ENV{DEVTYPE}=="wlan", NAME=="${device}", ${systemdAttrs curInterface._iName}
|
|
'');
|
|
}) ];
|
|
|
|
};
|
|
|
|
}
|