pyrox.dev
1{ config, lib, pkgs, ... }:
2
3with lib;
4
5let
6 cfg = config.networking.rxe;
7
8in {
9 ###### interface
10
11 options = {
12 networking.rxe = {
13 enable = mkEnableOption (lib.mdDoc "RDMA over converged ethernet");
14 interfaces = mkOption {
15 type = types.listOf types.str;
16 default = [ ];
17 example = [ "eth0" ];
18 description = lib.mdDoc ''
19 Enable RDMA on the listed interfaces. The corresponding virtual
20 RDMA interfaces will be named rxe_\<interface\>.
21 UDP port 4791 must be open on the respective ethernet interfaces.
22 '';
23 };
24 };
25 };
26
27 ###### implementation
28
29 config = mkIf cfg.enable {
30
31 systemd.services.rxe = {
32 description = "RoCE interfaces";
33
34 wantedBy = [ "multi-user.target" ];
35 after = [ "systemd-modules-load.service" "network-online.target" ];
36 wants = [ "network-pre.target" ];
37
38 serviceConfig = {
39 Type = "oneshot";
40 RemainAfterExit = true;
41 ExecStart = map ( x:
42 "${pkgs.iproute2}/bin/rdma link add rxe_${x} type rxe netdev ${x}"
43 ) cfg.interfaces;
44
45 ExecStop = map ( x:
46 "${pkgs.iproute2}/bin/rdma link delete rxe_${x}"
47 ) cfg.interfaces;
48 };
49 };
50 };
51}
52