[openwrt/openwrt] hostapd: add support for configuring proxy ARP

[LEDE Commits]

nbd pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/e309b57619b9c073b9b8857858d9456183f27d7d

commit e309b57619b9c073b9b8857858d9456183f27d7d
Author: Felix Fietkau <nbd at nbd.name>
AuthorDate: Wed May 26 13:50:43 2021 +0200

    hostapd: add support for configuring proxy ARP
    
    Signed-off-by: Felix Fietkau <nbd at nbd.name>
---
 package/network/services/hostapd/files/hostapd.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/package/network/services/hostapd/files/hostapd.sh b/package/network/services/hostapd/files/hostapd.sh
index 13699bf673..8d12683a39 100644
--- a/package/network/services/hostapd/files/hostapd.sh
+++ b/package/network/services/hostapd/files/hostapd.sh
@@ -341,7 +341,7 @@ hostapd_common_add_bss_config() {
 	config_add_array airtime_sta_weight
 	config_add_int airtime_bss_weight airtime_bss_limit
 
-	config_add_boolean multicast_to_unicast per_sta_vif
+	config_add_boolean multicast_to_unicast proxy_arp per_sta_vif
 
 	config_add_array hostapd_bss_options
 
@@ -518,7 +518,7 @@ hostapd_set_bss_options() {
 		bss_load_update_period chan_util_avg_period sae_require_mfp \
 		multi_ap multi_ap_backhaul_ssid multi_ap_backhaul_key skip_inactivity_poll \
 		airtime_bss_weight airtime_bss_limit airtime_sta_weight \
-		multicast_to_unicast per_sta_vif
+		multicast_to_unicast proxy_arp per_sta_vif
 
 	set_default isolate 0
 	set_default maxassoc 0
@@ -997,6 +997,10 @@ hostapd_set_bss_options() {
 	if [ "$multicast_to_unicast" -gt 0 ]; then
 		append bss_conf "multicast_to_unicast=$multicast_to_unicast" "$N"
 	fi
+	set_default proxy_arp 0
+	if [ "$proxy_arp" -gt 0 ]; then
+		append bss_conf "proxy_arp=$proxy_arp" "$N"
+	fi
 
 	set_default per_sta_vif 0
 	if [ "$per_sta_vif" -gt 0 ]; then