Network Manager refactor

files/dracut/95dot1x-macsec/dot1x-macsec-up.sh

@@ -107,8 +107,26 @@ info "dot1x-macsec: port authorized, macsec0 up after ${i}s"
 
 # --- 4. address the secure interface; netroot rides on macsec0 --------------
 ip link set macsec0 up
-# Hand macsec0 to dracut's network stack for DHCP + netroot resolution
-ifup macsec0
+# DHCP on macsec0 via NetworkManager (NOT the old network-legacy `ifup`): NM owns
+# macsec0, so it RENEWS the lease in the running system after switch-root — the
+# whole point of the network-manager port. macsec0 was created externally by
+# wpa_supplicant; ask NM to manage+activate it with a default DHCP profile. The
+# physical NIC stays unmanaged (nm-unmanaged.sh cmdline drop-in), so
+# wpa_supplicant keeps EAPOL/MKA on it. -w 0 returns immediately; we poll below.
+nmcli device set macsec0 managed yes 2>/dev/null || true
+nmcli -w 0 device connect macsec0 2>/dev/null || true
+
+# Wait for the DHCP lease (IPv4 on macsec0) before netroot/NVMe connect.
+i=0
+while [ "$i" -lt "$TIMEOUT" ]; do
+    ip -4 addr show macsec0 2>/dev/null | grep -q 'inet ' && break
+    sleep 1; i=$((i + 1))
+done
+if [ "$i" -ge "$TIMEOUT" ]; then
+    warn "dot1x-macsec: no DHCP lease on macsec0 after ${TIMEOUT}s"
+    exit 1
+fi
+info "dot1x-macsec: macsec0 addressed via NetworkManager (DHCP)"
 
 # --- 5. derive per-host NVMe identity from the TPM certificate --------------
 # Keeps the image fleet-generic: the host NQN is a function of the machine

files/dracut/95dot1x-macsec/module-setup.sh

@@ -11,7 +11,10 @@ check() {
 }
 
 depends() {
-    echo "network-legacy bash"
+    # network-manager (not network-legacy): NM renews the DHCP lease in the real
+    # root after switch-root (the legacy one-shot lease was never renewed). The
+    # secure path drives DHCP on macsec0 via nmcli instead of the old `ifup`.
+    echo "network-manager bash"
     return 0
 }
 
@@ -29,7 +32,9 @@ install() {
     # distro's dracut nvmf module populates discovery.conf but never registers
     # an initqueue/online autoconnect hook). The nvmf module installs nvme too,
     # but list it here so the hook's dependency is explicit and load-order-safe.
-    inst_multiple wpa_supplicant wpa_cli tpm2_nvread openssl ip setsid \
+    # nmcli: the secure path brings macsec0 up via NetworkManager (DHCP+renewal)
+    # instead of the old network-legacy `ifup`.
+    inst_multiple wpa_supplicant wpa_cli tpm2_nvread openssl ip setsid nmcli \
         grep sed cut tr sha256sum sleep mkdir nvme
 
     # TSS libraries that tpm2_nvread dlopens
@@ -39,6 +44,13 @@ install() {
     inst_simple /etc/dot1x/wpa_supplicant-dot1x.conf /etc/dot1x/wpa_supplicant-dot1x.conf
     inst_simple /etc/dot1x/radius-ca.pem             /etc/dot1x/radius-ca.pem
 
+    # cmdline-stage hook (runs BEFORE NetworkManager starts): in secure mode it
+    # drops /run/NetworkManager/conf.d/10-dot1x-unmanaged.conf so NM never grabs
+    # the physical EAPOL NIC (wpa_supplicant owns it). No-op in rd.dot1x=0 test
+    # mode, so NM manages+renews the boot NIC. Replaces the old static
+    # 99-dot1x-unmanaged.conf, which couldn't be mode-aware.
+    inst_hook cmdline 10 "$moddir/nm-unmanaged.sh"
+
     # Hook: runs from the initqueue once the NIC exists, before netroot
     inst_hook initqueue/settled 30 "$moddir/dot1x-macsec-up.sh"
 

files/dracut/95dot1x-macsec/nm-unmanaged.sh

@@ -0,0 +1,37 @@
+#!/bin/bash
+# nm-unmanaged.sh — dracut cmdline-stage hook (runs BEFORE NetworkManager starts).
+#
+# In the SECURE path (802.1X/MACsec), wpa_supplicant owns the physical NIC: it
+# runs EAPOL and the MACsec key agreement (MKA) on it, and that link carries the
+# root filesystem. NetworkManager must NOT touch that NIC — a competing NM
+# supplicant would drop MKA and kill netroot. So drop an NM config that marks the
+# physical NIC unmanaged. IP is carried by macsec0, which is left MANAGED so NM
+# does DHCP *and renews the lease* on it.
+#
+# In the TEST path (rd.dot1x=0) there is no macsec0; IP rides on the physical NIC
+# directly and we WANT NM to manage+renew it — so write nothing.
+#
+# Why /run (not /etc) and why the cmdline stage: /run/NetworkManager/conf.d is
+# read by NM and the tmpfs survives switch-root, so the same rule applies in both
+# the initramfs and the real root. Writing here at the cmdline stage guarantees
+# the file exists before NM is started, so NM never transiently manages the EAPOL
+# NIC. This replaces the old static /etc/.../99-dot1x-unmanaged.conf, which could
+# not be mode-aware (it wrongly unmanaged en* in test mode too, blocking renewal).
+
+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh
+
+# Test mode: leave the boot NIC managed so NM renews its lease.
+[ "$(getarg rd.dot1x=)" = "0" ] && return 0
+
+_dir=/run/NetworkManager/conf.d
+_conf="$_dir/10-dot1x-unmanaged.conf"
+[ -e "$_conf" ] && return 0          # idempotent (cmdline hooks may re-run)
+
+mkdir -p "$_dir"
+# interface-name:en* matches the predictable physical NIC names (eno/ens/enp);
+# macsec0 is deliberately NOT listed, so NM manages it for DHCP/renewal.
+{
+    echo "[keyfile]"
+    echo "unmanaged-devices=interface-name:en*"
+} > "$_conf"
+info "dot1x-macsec: NM unmanaged drop-in written ($_conf) — physical NIC reserved for wpa_supplicant"