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Merge pull request #3182 from wkennington/master.ipv6

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nixos/network-interfaces: Add support for multiple ipv4 / ipv6 addresses
This commit is contained in:
Michael Raskin 2014-08-30 19:06:04 +04:00
commit b23fd65854
7 changed files with 120 additions and 59 deletions
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5
nixos/doc/manual/configuration/ipv4-config.xml
View File

@ -12,12 +12,9 @@ interfaces. However, you can configure an interface manually as
follows:
<programlisting>
networking.interfaces.eth0 = { ipAddress = "192.168.1.2"; prefixLength = 24; };
networking.interfaces.eth0.ip4 = [ { address = "192.168.1.2"; prefixLength = 24; } ];
</programlisting>
(The network prefix can also be specified using the option
<literal>subnetMask</literal>,
e.g. <literal>"255.255.255.0"</literal>, but this is deprecated.)
Typically you’ll also want to set a default gateway and set of name
servers:

11
nixos/lib/build-vms.nix
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@ -48,10 +48,11 @@ rec {
let
interfacesNumbered = zipTwoLists config.virtualisation.vlans (range 1 255);
interfaces = flip map interfacesNumbered ({ first, second }:
nameValuePair "eth${toString second}"
{ ipAddress = "192.168.${toString first}.${toString m.second}";
subnetMask = "255.255.255.0";
});
nameValuePair "eth${toString second}" { ip4 =
[ { address = "192.168.${toString first}.${toString m.second}";
prefixLength = 24;
} ];
}
in
{ key = "ip-address";
config =
@ -60,7 +61,7 @@ rec {
networking.interfaces = listToAttrs interfaces;
networking.primaryIPAddress =
optionalString (interfaces != []) (head interfaces).value.ipAddress;
optionalString (interfaces != []) (head (head interfaces).value.ip4).address;
# Put the IP addresses of all VMs in this machine's
# /etc/hosts file. If a machine has multiple

2
nixos/modules/programs/virtualbox.nix
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@ -44,5 +44,5 @@ let virtualbox = config.boot.kernelPackages.virtualbox; in
'';
};
networking.interfaces.vboxnet0 = { ipAddress = "192.168.56.1"; prefixLength = 24; };
networking.interfaces.vboxnet0.ip4 = [ { address = "192.168.56.1"; prefixLength = 24; } ];
}

2
nixos/modules/services/networking/dhcpcd.nix
View File

@ -11,7 +11,7 @@ let
# Don't start dhcpcd on explicitly configured interfaces or on
# interfaces that are part of a bridge, bond or sit device.
ignoredInterfaces =
map (i: i.name) (filter (i: i.ipAddress != null) (attrValues config.networking.interfaces))
map (i: i.name) (filter (i: i.ip4 != [ ] || i.ipAddress != null) (attrValues config.networking.interfaces))
++ mapAttrsToList (i: _: i) config.networking.sits
++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bridges))
++ concatLists (attrValues (mapAttrs (n: v: v.interfaces) config.networking.bonds))

151
nixos/modules/tasks/network-interfaces.nix
View File

@ -10,6 +10,26 @@ let
hasSits = cfg.sits != { };
hasBonds = cfg.bonds != { };
addrOpts = v:
assert v == 4 || v == 6;
{
address = mkOption {
type = types.str;
description = ''
IPv${toString v} address of the interface. Leave empty to configure the
interface using DHCP.
'';
};
prefixLength = mkOption {
type = types.addCheck types.int (n: n >= 0 && n <= (if v == 4 then 32 else 128));
description = ''
Subnet mask of the interface, specified as the number of
bits in the prefix (<literal>${if v == 4 then "24" else "64"}</literal>).
'';
};
};
interfaceOpts = { name, ... }: {
options = {
@ -20,10 +40,36 @@ let
description = "Name of the interface.";
};
ip4 = mkOption {
default = [ ];
example = [
{ address = "10.0.0.1"; prefixLength = 16; }
{ address = "192.168.1.1"; prefixLength = 24; }
];
type = types.listOf types.optionSet;
options = addrOpts 4;
description = ''
List of IPv4 addresses that will be statically assigned to the interface.
'';
};
ip6 = mkOption {
default = [ ];
example = [
{ address = "fdfd:b3f0:482::1"; prefixLength = 48; }
{ address = "2001:1470:fffd:2098::e006"; prefixLength = 64; }
];
type = types.listOf types.optionSet;
options = addrOpts 6;
description = ''
List of IPv6 addresses that will be statically assigned to the interface.
'';
};
ipAddress = mkOption {
default = null;
example = "10.0.0.1";
type = types.nullOr (types.str);
type = types.nullOr types.str;
description = ''
IP address of the interface. Leave empty to configure the
interface using DHCP.
@ -41,20 +87,16 @@ let
};
subnetMask = mkOption {
default = "";
example = "255.255.255.0";
type = types.str;
default = null;
description = ''
Subnet mask of the interface, specified as a bitmask.
This is deprecated; use <option>prefixLength</option>
instead.
Defunct, supply the prefix length instead.
'';
};
ipv6Address = mkOption {
default = null;
example = "2001:1470:fffd:2098::e006";
type = types.nullOr types.string;
type = types.nullOr types.str;
description = ''
IPv6 address of the interface. Leave empty to configure the
interface using NDP.
@ -224,10 +266,10 @@ in
networking.interfaces = mkOption {
default = {};
example =
{ eth0 = {
ipAddress = "131.211.84.78";
subnetMask = "255.255.255.128";
};
{ eth0.ip4 = [ {
address = "131.211.84.78";
prefixLength = 25;
} ];
};
description = ''
The configuration for each network interface. If
@ -438,6 +480,12 @@ in
config = {
assertions =
flip map interfaces (i: {
assertion = i.subnetMask == null;
message = "The networking.interfaces.${i.name}.subnetMask option is defunct. Use prefixLength instead.";
});
boot.kernelModules = [ ]
++ optional cfg.enableIPv6 "ipv6"
++ optional hasVirtuals "tun"
@ -534,12 +582,18 @@ in
# network device, so it only gets started after the interface
# has appeared, and it's stopped when the interface
# disappears.
configureInterface = i: nameValuePair "${i.name}-cfg"
(let mask =
if i.prefixLength != null then toString i.prefixLength else
if i.subnetMask != "" then i.subnetMask else "32";
staticIPv6 = cfg.enableIPv6 && i.ipv6Address != null;
configureInterface = i:
let
ips = i.ip4 ++ optionals cfg.enableIPv6 i.ip6
++ optional (i.ipAddress != null) {
ipAddress = i.ipAddress;
prefixLength = i.prefixLength;
} ++ optional (cfg.enableIPv6 && i.ipv6Address != null) {
ipAddress = i.ipv6Address;
prefixLength = i.ipv6PrefixLength;
};
in
nameValuePair "${i.name}-cfg"
{ description = "Configuration of ${i.name}";
wantedBy = [ "network-interfaces.target" ];
bindsTo = [ "sys-subsystem-net-devices-${i.name}.device" ];
@ -562,36 +616,32 @@ in
echo "setting MTU to ${toString i.mtu}..."
ip link set "${i.name}" mtu "${toString i.mtu}"
''
+ optionalString (i.ipAddress != null)
# Ip Setup
+
''
cur=$(ip -4 -o a show dev "${i.name}" | awk '{print $4}')
# Only do a flush/add if it's necessary. This is
curIps=$(ip -o a show dev "${i.name}" | awk '{print $4}')
# Only do an add if it's necessary. This is
# useful when the Nix store is accessed via this
# interface (e.g. in a QEMU VM test).
if [ "$cur" != "${i.ipAddress}/${mask}" ]; then
echo "configuring interface..."
ip -4 addr flush dev "${i.name}"
ip -4 addr add "${i.ipAddress}/${mask}" dev "${i.name}"
restart_network_setup=true
else
echo "skipping configuring interface"
''
+ 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 ${address}"
exit 1
fi
fi
''
+ optionalString (staticIPv6)
''
# Only do a flush/add if it's necessary. This is
# useful when the Nix store is accessed via this
# interface (e.g. in a QEMU VM test).
if ! ip -6 -o a show dev "${i.name}" | grep "${i.ipv6Address}/${toString i.ipv6prefixLength}"; then
echo "configuring interface..."
ip -6 addr flush dev "${i.name}"
ip -6 addr add "${i.ipv6Address}/${toString i.ipv6prefixLength}" dev "${i.name}"
restart_network_setup=true
else
echo "skipping configuring interface"
fi
''
+ optionalString (i.ipAddress != null || staticIPv6)
'')
+ optionalString (ips != [ ])
''
if [ restart_network_setup = true ]; then
# Ensure that the default gateway remains set.
@ -608,7 +658,20 @@ in
''
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}"
{ description = "Virtual Network Interface ${i.name}";

6
nixos/tests/bittorrent.nix
View File

@ -16,7 +16,7 @@ let
miniupnpdConf = nodes: pkgs.writeText "miniupnpd.conf"
''
ext_ifname=eth1
listening_ip=${nodes.router.config.networking.interfaces.eth2.ipAddress}/24
listening_ip=${(head nodes.router.config.networking.interfaces.eth2.ip4).address}/24
allow 1024-65535 192.168.2.0/24 1024-65535
'';
@ -53,7 +53,7 @@ in
{ environment.systemPackages = [ pkgs.transmission ];
virtualisation.vlans = [ 2 ];
networking.defaultGateway =
nodes.router.config.networking.interfaces.eth2.ipAddress;
(head nodes.router.config.networking.interfaces.eth2.ip4).address;
networking.firewall.enable = false;
};
@ -81,7 +81,7 @@ in
# Create the torrent.
$tracker->succeed("mkdir /tmp/data");
$tracker->succeed("cp ${file} /tmp/data/test.tar.bz2");
$tracker->succeed("transmission-create /tmp/data/test.tar.bz2 -t http://${nodes.tracker.config.networking.interfaces.eth1.ipAddress}:6969/announce -o /tmp/test.torrent");
$tracker->succeed("transmission-create /tmp/data/test.tar.bz2 -t http://${(head nodes.tracker.config.networking.interfaces.eth1.ip4).address}:6969/announce -o /tmp/test.torrent");
$tracker->succeed("chmod 644 /tmp/test.torrent");
# Start the tracker. !!! use a less crappy tracker

2
nixos/tests/nat.nix
View File

@ -13,7 +13,7 @@ import ./make-test.nix {
{ virtualisation.vlans = [ 1 ];
networking.firewall.allowPing = true;
networking.defaultGateway =
nodes.router.config.networking.interfaces.eth2.ipAddress;
(head nodes.router.config.networking.interfaces.eth2.ip4).address;
};
router =