diff options
Diffstat (limited to 'nixos/modules/hardware/infiniband.nix')
-rw-r--r-- | nixos/modules/hardware/infiniband.nix | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/nixos/modules/hardware/infiniband.nix b/nixos/modules/hardware/infiniband.nix new file mode 100644 index 000000000000..962883fa7972 --- /dev/null +++ b/nixos/modules/hardware/infiniband.nix @@ -0,0 +1,58 @@ +{ config, lib, pkgs, ... }: + +with lib; + +let + + cfg = config.hardware.infiniband; + opensm-services = { + "opensm@" = { + enable = true; + description = "Starts OpenSM Infiniband fabric Subnet Managers"; + before = [ "network.target"]; + unitConfig = { + ConditionPathExists = "/sys/class/infiniband_mad/abi_version"; + }; + serviceConfig = { + Type = "simple"; + ExecStart = "${pkgs.opensm}/bin/opensm --guid %I --log_file /var/log/opensm.%I.log"; + }; + }; + } // (builtins.listToAttrs (map (guid: { + name = "opensm@${guid}"; + value = { + enable = true; + wantedBy = [ "machines.target" ]; + overrideStrategy = "asDropin"; + }; + } ) cfg.guids)); + +in + +{ + options.hardware.infiniband = { + enable = mkEnableOption "Infiniband support"; + guids = mkOption { + type = with types; listOf str; + default = []; + example = [ "0xe8ebd30000eee2e1" ]; + description = lib.mdDoc '' + A list of infiniband port guids on the system. This is discoverable using `ibstat -p` + ''; + }; + }; + + config = mkIf cfg.enable { + boot.initrd.kernelModules = [ + "mlx5_core" "mlx5_ib" "ib_cm" + "rdma_cm" "rdma_ucm" "rpcrdma" + "ib_ipoib" "ib_isert" "ib_umad" "ib_uverbs" + ]; + # rdma-core exposes ibstat, mstflint exposes mstconfig (which can be needed for + # setting link configurations), qperf needed to affirm link speeds + environment.systemPackages = with pkgs; [ + rdma-core mstflint qperf + ]; + systemd.services = opensm-services; + }; +} |