[PATCH] fff-hoods/fff-wireless: Don't delete WiFi devices

[Adrian Schmutzler]

We only want to remove WiFi interfaces, not devices during
reconfiguration. This still allows for complete reconfiguration,
but does not remove device attributes like a disabled 5 GHz or
similar.

Semi-tested: Tested via command-line, but separate from
configurehood.

Signed-off-by: Adrian Schmutzler <freifunk at adrianschmutzler.de>
---
 src/packages/fff/fff-hoods/files/usr/sbin/configurehood   |  4 ++--
 .../fff/fff-wireless/files/lib/functions/fff/wireless     | 15 +++++++++++++++
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/packages/fff/fff-hoods/files/usr/sbin/configurehood b/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
index 8437c33..b1b674e 100755
--- a/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
+++ b/src/packages/fff/fff-hoods/files/usr/sbin/configurehood
@@ -78,7 +78,7 @@ else
 		rm -f "$sectorcopy" # always delete: no broadcast for isolated device
 		rm -f "$sectortmp"
 
-		if ! wifiDelAll; then
+		if ! wifiDelIface; then
 			echo "Can't delete current wifi setup"
 			exit 1
 		fi
@@ -178,7 +178,7 @@ if [ -s "$hoodfile" ]; then
 		uci -q set "system. at system[0].hood=$hood"
 		uci -q commit system
 
-		if ! wifiDelAll; then
+		if ! wifiDelIface; then
 			echo "Can't delete current wifi setup"
 			exit 1
 		fi
diff --git a/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless b/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
index b1ff5a9..5b63397 100644
--- a/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
+++ b/src/packages/fff/fff-wireless/files/lib/functions/fff/wireless
@@ -14,6 +14,21 @@ wifiDelAll() {
 	return 0
 }
 
+wifiDelIface() {
+	if [ $# -ne "0" ]
+	then
+		echo "Usage: wifiDelIface"
+		return 1
+	fi
+
+	grep 'config wifi-iface' /etc/config/wireless | sed -n -e "s/.*'\([^']*\)'.*/\1/p" | while read -r line ; do
+		uci -q delete "wireless.$line"
+	done
+	uci -q commit wireless
+
+	return 0
+}
+
 wifiAddPhy() {
 	if [ $# -ne "2" ]
 	then
-- 
2.7.4