wireless: T2354: add new validator for phy interfaces

2 files changed, 28 insertions, 0 deletions

diff --git a/interface-definitions/interfaces-wireless.xml.in b/interface-definitions/interfaces-wireless.xml.in
index d21074b6a..06c7734f5 100644
--- a/interface-definitions/interfaces-wireless.xml.in
+++ b/interface-definitions/interfaces-wireless.xml.in
@@ -561,6 +561,9 @@
               <completionHelp>
                 <script>${vyos_completion_dir}/list_wireless_phys.sh</script>
               </completionHelp>
+              <constraint>
+                <validator name="wireless-phy"/>
+              </constraint>
             </properties>
           </leafNode>
           <leafNode name="reduce-transmit-power">
diff --git a/src/validators/wireless-phy b/src/validators/wireless-phy
new file mode 100755
index 000000000..513a902de
--- /dev/null
+++ b/src/validators/wireless-phy
@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Copyright (C) 2018-2020 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+if [ ! -d /sys/class/ieee80211 ]; then
+    echo No IEEE 802.11 physical interfaces detected
+    exit 1
+fi
+
+if [ ! -e /sys/class/ieee80211/$1 ]; then
+    echo Device interface "$1" does not exist
+    exit 1
+fi