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Merge pull request #148637 from hexagonal-sun/network/gre-tap-tun

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nixos/network: add gre virtual interfaces
This commit is contained in:
Guillaume Girol
2022-01-01 17:04:29 +00:00
committed by GitHub
parent e426ec42be 5ce7061945
commit fdc3784828
4 changed files with 180 additions and 0 deletions
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61
nixos/modules/tasks/network-interfaces.nix
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@@ -10,6 +10,7 @@ let
interfaces = attrValues cfg.interfaces;
hasVirtuals = any (i: i.virtual) interfaces;
hasSits = cfg.sits != { };
hasGres = cfg.greTunnels != { };
hasBonds = cfg.bonds != { };
hasFous = cfg.fooOverUDP != { }
|| filterAttrs (_: s: s.encapsulation != null) cfg.sits != { };
@@ -997,6 +998,65 @@ in
});
};
networking.greTunnels = mkOption {
default = { };
example = literalExpression ''
{
greBridge = {
remote = "10.0.0.1";
local = "10.0.0.22";
dev = "enp4s0f0";
type = "tap";
};
}
'';
description = ''
This option allows you to define Generic Routing Encapsulation (GRE) tunnels.
'';
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.
'';
};
dev = mkOption {
type = types.nullOr types.str;
default = null;
example = "enp4s0f0";
description = ''
The underlying network device on which the tunnel resides.
'';
};
type = mkOption {
type = with types; enum [ "tun" "tap" ];
default = "tap";
example = "tap";
apply = v: if v == "tun" then "gre" else "gretap";
description = ''
Whether the tunnel routes layer 2 (tap) or layer 3 (tun) traffic.
'';
};
};
});
};
networking.vlans = mkOption {
default = { };
example = literalExpression ''
@@ -1229,6 +1289,7 @@ in
boot.kernelModules = [ ]
++ optional hasVirtuals "tun"
++ optional hasSits "sit"
++ optional hasGres "gre"
++ optional hasBonds "bonding"
++ optional hasFous "fou";