mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-26 07:31:20 +00:00
c58654e2b7
See #18319 for details. Starting network-online.target manually does not work as it hangs indefinitely. Additionally, don't treat avahi and dhcpcd special and sync their systemd units with the respective upstream suggestion.
385 lines
15 KiB
Nix
385 lines
15 KiB
Nix
{ config, lib, pkgs, utils, ... }:
|
||
|
||
with utils;
|
||
with lib;
|
||
|
||
let
|
||
|
||
cfg = config.networking;
|
||
interfaces = attrValues cfg.interfaces;
|
||
hasVirtuals = any (i: i.virtual) interfaces;
|
||
|
||
# We must escape interfaces due to the systemd interpretation
|
||
subsystemDevice = interface:
|
||
"sys-subsystem-net-devices-${escapeSystemdPath interface}.device";
|
||
|
||
interfaceIps = i:
|
||
i.ip4 ++ optionals cfg.enableIPv6 i.ip6
|
||
++ optional (i.ipAddress != null) {
|
||
address = i.ipAddress;
|
||
prefixLength = i.prefixLength;
|
||
} ++ optional (cfg.enableIPv6 && i.ipv6Address != null) {
|
||
address = i.ipv6Address;
|
||
prefixLength = i.ipv6PrefixLength;
|
||
};
|
||
|
||
destroyBond = i: ''
|
||
while true; do
|
||
UPDATED=1
|
||
SLAVES=$(ip link | grep 'master ${i}' | awk -F: '{print $2}')
|
||
for I in $SLAVES; do
|
||
UPDATED=0
|
||
ip link set "$I" nomaster
|
||
done
|
||
[ "$UPDATED" -eq "1" ] && break
|
||
done
|
||
ip link set "${i}" down 2>/dev/null || true
|
||
ip link del "${i}" 2>/dev/null || true
|
||
'';
|
||
|
||
in
|
||
|
||
{
|
||
|
||
config = mkIf (!cfg.useNetworkd) {
|
||
|
||
systemd.services =
|
||
let
|
||
|
||
networkLocalCommands = {
|
||
after = [ "network-setup.service" ];
|
||
bindsTo = [ "network-setup.service" ];
|
||
};
|
||
|
||
networkSetup =
|
||
{ description = "Networking Setup";
|
||
|
||
after = [ "network-interfaces.target" "network-pre.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 != null) ''
|
||
domain ${cfg.domain}
|
||
''}
|
||
${optionalString (cfg.search != []) ("search " + concatStringsSep " " cfg.search)}
|
||
${flip concatMapStrings cfg.nameservers (ns: ''
|
||
nameserver ${ns}
|
||
'')}
|
||
EOF
|
||
|
||
# Set the default gateway.
|
||
${optionalString (cfg.defaultGateway != null && cfg.defaultGateway != "") ''
|
||
# FIXME: get rid of "|| true" (necessary to make it idempotent).
|
||
ip route add default via "${cfg.defaultGateway}" ${
|
||
optionalString (cfg.defaultGatewayWindowSize != null)
|
||
"window ${toString cfg.defaultGatewayWindowSize}"} || true
|
||
''}
|
||
${optionalString (cfg.defaultGateway6 != null && cfg.defaultGateway6 != "") ''
|
||
# FIXME: get rid of "|| true" (necessary to make it idempotent).
|
||
ip -6 route add ::/0 via "${cfg.defaultGateway6}" ${
|
||
optionalString (cfg.defaultGatewayWindowSize != null)
|
||
"window ${toString cfg.defaultGatewayWindowSize}"} || true
|
||
''}
|
||
'';
|
||
};
|
||
|
||
# For each interface <foo>, create a job ‘network-addresses-<foo>.service"
|
||
# that performs static address configuration. It has a "wants"
|
||
# dependency on ‘<foo>.service’, which is supposed to create
|
||
# the interface and need not exist (i.e. for hardware
|
||
# interfaces). It has a binds-to dependency on the actual
|
||
# network device, so it only gets started after the interface
|
||
# has appeared, and it's stopped when the interface
|
||
# disappears.
|
||
configureAddrs = i:
|
||
let
|
||
ips = interfaceIps i;
|
||
in
|
||
nameValuePair "network-addresses-${i.name}"
|
||
{ description = "Address configuration of ${i.name}";
|
||
wantedBy = [ "network-interfaces.target" ];
|
||
before = [ "network-interfaces.target" ];
|
||
bindsTo = [ (subsystemDevice i.name) ];
|
||
after = [ (subsystemDevice i.name) "network-pre.target" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script =
|
||
''
|
||
echo "bringing up interface..."
|
||
ip link set "${i.name}" up
|
||
|
||
restart_network_interfaces=false
|
||
'' + flip concatMapStrings (ips) (ip:
|
||
let
|
||
address = "${ip.address}/${toString ip.prefixLength}";
|
||
in
|
||
''
|
||
echo "checking ip ${address}..."
|
||
if out=$(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 ${address}"
|
||
exit 1
|
||
fi
|
||
'')
|
||
+ optionalString (ips != [ ])
|
||
''
|
||
if [ "$restart_network_setup" = "true" ]; then
|
||
# Ensure that the default gateway remains set.
|
||
# (Flushing this interface may have removed it.)
|
||
${config.systemd.package}/bin/systemctl try-restart --no-block network-setup.service
|
||
fi
|
||
'';
|
||
preStop = flip concatMapStrings (ips) (ip:
|
||
let
|
||
address = "${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 ${i.name}";
|
||
requires = [ "dev-net-tun.device" ];
|
||
after = [ "dev-net-tun.device" "network-pre.target" ];
|
||
wantedBy = [ "network.target" (subsystemDevice i.name) ];
|
||
before = [ "network-interfaces.target" (subsystemDevice i.name) ];
|
||
path = [ pkgs.iproute ];
|
||
serviceConfig = {
|
||
Type = "oneshot";
|
||
RemainAfterExit = true;
|
||
};
|
||
script = ''
|
||
ip tuntap add dev "${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 ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps ++ optional v.rstp "mstpd.service";
|
||
partOf = optional v.rstp "mstpd.service";
|
||
after = [ "network-pre.target" "mstpd.service" ] ++ deps
|
||
++ concatMap (i: [ "network-addresses-${i}.service" "network-link-${i}.service" ]) v.interfaces;
|
||
before = [ "network-interfaces.target" (subsystemDevice n) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
echo "Removing old bridge ${n}..."
|
||
ip link show "${n}" >/dev/null 2>&1 && ip link del "${n}"
|
||
|
||
echo "Adding bridge ${n}..."
|
||
ip link add name "${n}" type bridge
|
||
|
||
# Enslave child interfaces
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ip link set "${i}" master "${n}"
|
||
ip link set "${i}" up
|
||
'')}
|
||
|
||
# Enable stp on the interface
|
||
${optionalString v.rstp ''
|
||
echo 2 >/sys/class/net/${n}/bridge/stp_state
|
||
''}
|
||
|
||
ip link set "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link set "${n}" down || true
|
||
ip link del "${n}" || true
|
||
'';
|
||
});
|
||
|
||
createVswitchDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = map subsystemDevice v.interfaces;
|
||
ofRules = pkgs.writeText "vswitch-${n}-openFlowRules" v.openFlowRules;
|
||
in
|
||
{ description = "Open vSwitch Interface ${n}";
|
||
wantedBy = [ "network.target" "vswitchd.service" ] ++ deps;
|
||
bindsTo = [ "vswitchd.service" (subsystemDevice n) ] ++ deps;
|
||
partOf = [ "vswitchd.service" ];
|
||
after = [ "network-pre.target" "vswitchd.service" ] ++ deps;
|
||
before = [ "network-interfaces.target" ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute config.virtualisation.vswitch.package ];
|
||
script = ''
|
||
echo "Removing old Open vSwitch ${n}..."
|
||
ovs-vsctl --if-exists del-br ${n}
|
||
|
||
echo "Adding Open vSwitch ${n}..."
|
||
ovs-vsctl -- add-br ${n} ${concatMapStrings (i: " -- add-port ${n} ${i}") v.interfaces} \
|
||
${concatMapStrings (x: " -- set-controller ${n} " + x) v.controllers} \
|
||
${concatMapStrings (x: " -- " + x) (splitString "\n" v.extraOvsctlCmds)}
|
||
|
||
echo "Adding OpenFlow rules for Open vSwitch ${n}..."
|
||
ovs-ofctl add-flows ${n} ${ofRules}
|
||
'';
|
||
postStop = ''
|
||
ip link set ${n} down || true
|
||
ovs-ofctl del-flows ${n} || true
|
||
ovs-vsctl --if-exists del-br ${n}
|
||
'';
|
||
});
|
||
|
||
createBondDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = map subsystemDevice v.interfaces;
|
||
in
|
||
{ description = "Bond Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps
|
||
++ concatMap (i: [ "network-addresses-${i}.service" "network-link-${i}.service" ]) v.interfaces;
|
||
before = [ "network-interfaces.target" (subsystemDevice n) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute pkgs.gawk ];
|
||
script = ''
|
||
echo "Destroying old bond ${n}..."
|
||
${destroyBond n}
|
||
|
||
echo "Creating new bond ${n}..."
|
||
ip link add name "${n}" type bond \
|
||
${optionalString (v.mode != null) "mode ${toString v.mode}"} \
|
||
${optionalString (v.miimon != null) "miimon ${toString v.miimon}"} \
|
||
${optionalString (v.xmit_hash_policy != null) "xmit_hash_policy ${toString v.xmit_hash_policy}"} \
|
||
${optionalString (v.lacp_rate != null) "lacp_rate ${toString v.lacp_rate}"}
|
||
|
||
# !!! There must be a better way to wait for the interface
|
||
while [ ! -d "/sys/class/net/${n}" ]; do sleep 0.1; done;
|
||
|
||
# Bring up the bond and enslave the specified interfaces
|
||
ip link set "${n}" up
|
||
${flip concatMapStrings v.interfaces (i: ''
|
||
ip link set "${i}" down
|
||
ip link set "${i}" master "${n}"
|
||
'')}
|
||
'';
|
||
postStop = destroyBond n;
|
||
});
|
||
|
||
createMacvlanDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = [ (subsystemDevice v.interface) ];
|
||
in
|
||
{ description = "Vlan Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-interfaces.target" (subsystemDevice n) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show "${n}" >/dev/null 2>&1 && ip link delete "${n}"
|
||
ip link add link "${v.interface}" name "${n}" type macvlan \
|
||
${optionalString (v.mode != null) "mode ${v.mode}"}
|
||
ip link set "${n}" up
|
||
'';
|
||
postStop = ''
|
||
ip link delete "${n}"
|
||
'';
|
||
});
|
||
|
||
createSitDevice = n: v: nameValuePair "${n}-netdev"
|
||
(let
|
||
deps = optional (v.dev != null) (subsystemDevice v.dev);
|
||
in
|
||
{ description = "6-to-4 Tunnel Interface ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-interfaces.target" (subsystemDevice n) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show "${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 ${n}";
|
||
wantedBy = [ "network.target" (subsystemDevice n) ];
|
||
bindsTo = deps;
|
||
after = [ "network-pre.target" ] ++ deps;
|
||
before = [ "network-interfaces.target" (subsystemDevice n) ];
|
||
serviceConfig.Type = "oneshot";
|
||
serviceConfig.RemainAfterExit = true;
|
||
path = [ pkgs.iproute ];
|
||
script = ''
|
||
# Remove Dead Interfaces
|
||
ip link show "${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 configureAddrs interfaces ++
|
||
map createTunDevice (filter (i: i.virtual) interfaces))
|
||
// mapAttrs' createBridgeDevice cfg.bridges
|
||
// mapAttrs' createVswitchDevice cfg.vswitches
|
||
// mapAttrs' createBondDevice cfg.bonds
|
||
// mapAttrs' createMacvlanDevice cfg.macvlans
|
||
// mapAttrs' createSitDevice cfg.sits
|
||
// mapAttrs' createVlanDevice cfg.vlans
|
||
// {
|
||
"network-setup" = networkSetup;
|
||
"network-local-commands" = networkLocalCommands;
|
||
};
|
||
|
||
services.udev.extraRules =
|
||
''
|
||
KERNEL=="tun", TAG+="systemd"
|
||
'';
|
||
|
||
};
|
||
|
||
}
|