nvmf-autoconnect: add NetworkManager dispatcher script

meson.build

@@ -103,6 +103,7 @@ sysconfdir     = join_paths(prefixdir, get_option('sysconfdir'))
 udevrulesdir   = join_paths(prefixdir, get_option('udevrulesdir'))
 dracutrulesdir = join_paths(prefixdir, get_option('dracutrulesdir'))
 systemddir     = join_paths(prefixdir, get_option('systemddir'))
+nmdispatchdir  = join_paths(prefixdir, get_option('nmdispatchdir'))
 rundir         = join_paths(prefixdir, get_option('rundir'))
 
 std_prefix = prefixdir == '/usr' or prefixdir == '/usr/local'
@@ -571,6 +572,21 @@ if want_nvme
         )
     endforeach
 
+    nm_dispatcher_files = [
+        '80-nvmf-connect-nbft.sh'
+    ]
+
+    foreach file : nm_dispatcher_files
+        configure_file(
+            input: 'nvmf-autoconnect/nm-dispatcher/' + file + '.in',
+            output: file,
+            configuration: substs,
+            install: true,
+            install_mode: 'rwxr-xr-x',
+            install_dir: nmdispatchdir
+        )
+    endforeach
+
     install_data(
         'completions/bash-nvme-completion.sh',
         rename: 'nvme',
@@ -596,6 +612,7 @@ path_dict = {
     'dracutrulesdir':   dracutrulesdir,
     'rundir':           rundir,
     'systemddir':       systemddir,
+    'nmdispatchdir':    nmdispatchdir,
     'build location':   meson.current_build_dir(),
 }
 summary(path_dict, section: 'Paths')

meson_options.txt

@@ -95,6 +95,12 @@ option(
   value : 'lib/udev/rules.d',
   description : 'directory for udev rules files'
 )
+option(
+  'nmdispatchdir',
+  type : 'string',
+  value : 'lib/NetworkManager/dispatcher.d',
+  description : 'directory for NetworkManager dispatcher scripts'
+)
 option(
   'version-tag',
   type : 'string',

nvmf-autoconnect/nm-dispatcher/80-nvmf-connect-nbft.sh.in

@@ -0,0 +1,27 @@
+#! /bin/sh
+# SPDX-License-Identifier: GPL-2.0-or-later
+#
+# If an interface is brought up that is configured in the NVMeoF
+# Boot Firmware Table (NBFT), try to establish possibly missing
+# NVMe connections from the NBFT.
+# This can happen if an interface couldn't be brought up during
+# initramfs processing, but is activated later on.
+
+start_nvmf=
+
+if [ "$2" = up ]; then
+    case $1 in
+	nbft*)
+	    start_nvmf=yes
+	    ;;
+    esac
+    case $CONNECTION_ID in
+        "NBFT connection HFI"*)
+	    start_nvmf=yes
+            ;;
+    esac
+fi
+
+if [ "$start_nvmf" ]; then
+    @SYSTEMCTL@ --no-block start nvmf-connect-nbft.service || true
+fi