[Unit]
Description=iWarp Port Mapper
Documentation=man:iwpmd file:/etc/iwpmd.conf
StopWhenUnneeded=yes
# iwpmd is a kernel support program and needs to run as early as possible,
# otherwise the kernel or userspace cannot establish RDMA connections and
# things will just fail, not block until iwpmd arrives.
DefaultDependencies=no
Before=sysinit.target
# Do not execute concurrently with an ongoing shutdown (required for DefaultDependencies=no)
Conflicts=shutdown.target
Before=shutdown.target
# Ensure required kernel modules are loaded before starting
Wants=rdma-load-modules@iwpmd.service
After=rdma-load-modules@iwpmd.service
# iwpmd needs to start before networking is brought up, even kernel networking
# (eg NFS) since it provides kernel support for iWarp's RDMA CM.
Wants=network-pre.target
Before=network-pre.target
# rdma-hw is not ready until iwpmd is running
Before=rdma-hw.target

[Service]
Type=notify
ExecStart=@CMAKE_INSTALL_FULL_SBINDIR@/iwpmd --systemd
LimitNOFILE=102400
ProtectSystem=full
ProtectHome=true
ProtectHostname=true
ProtectKernelLogs=true

# iwpmd is automatically wanted by udev when an iWarp RDMA device is present