Merge commit 'cb21b77' into master.upstream

This is a partial merge of staging for builds which are working

1 files changed, 45 insertions, 0 deletions

diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 2d6522a1bf9d..d042ee094cf9 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -46,6 +46,51 @@ 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 [{"${device}"=interfaces.device; _iName=device;}] ++ mapAttrsToList (n: v: v//{_iName=n;}) (filterAttrs (n: _: n!=device) interfaces)
+    else mapAttrsToList (n: v: v // {_iName = n;}) interfaces;
+
+  # udev script that configures a physical wlan device and adds virtual interfaces
+  wlanDeviceUdevScript = device: interfaceList: pkgs.writeScript "wlan-${device}-udev-script" ''
+    #!${pkgs.stdenv.shell}
+
+    # Change the wireless phy device to a predictable name.
+    if [ -e "/sys/class/net/${device}/phy80211/name" ]; then
+      ${pkgs.iw}/bin/iw phy `${pkgs.coreutils}/bin/cat /sys/class/net/${device}/phy80211/name` set name ${device} || true
+    fi
+
+    # Crate new, virtual interfaces and configure them at the same time
+    ${flip concatMapStrings (drop 1 interfaceList) (i: ''
+    ${pkgs.iw}/bin/iw dev ${device} interface add ${i._iName} type ${i.type} \
+      ${optionalString (i.type == "mesh" && i.meshID != null) "mesh_id ${i.meshID}"} \
+      ${optionalString (i.type == "monitor" && i.flags != null) "flags ${i.flags}"} \
+      ${optionalString (i.type == "managed" && i.fourAddr != null) "4addr ${if i.fourAddr then "on" else "off"}"} \
+      ${optionalString (i.mac != null) "addr ${i.mac}"}
+    '')}
+
+    # Reconfigure and rename the default interface that already exists
+    ${flip concatMapStrings (take 1 interfaceList) (i: ''
+      ${pkgs.iw}/bin/iw dev ${device} set type ${i.type}
+      ${optionalString (i.type == "mesh" && i.meshID != null) "${pkgs.iw}/bin/iw dev ${device} set meshid ${i.meshID}"}
+      ${optionalString (i.type == "monitor" && i.flags != null) "${pkgs.iw}/bin/iw dev ${device} set monitor ${i.flags}"}
+      ${optionalString (i.type == "managed" && i.fourAddr != null) "${pkgs.iw}/bin/iw dev ${device} set 4addr ${if i.fourAddr then "on" else "off"}"}
+      ${optionalString (i.mac != null) "${pkgs.iproute}/bin/ip link set dev ${device} address ${i.mac}"}
+      ${optionalString (device != i._iName) "${pkgs.iproute}/bin/ip link set dev ${device} name ${i._iName}"}
+    '')}
+  '';
+
   # We must escape interfaces due to the systemd interpretation
   subsystemDevice = interface:
     "sys-subsystem-net-devices-${escapeSystemdPath interface}.device";