From 486418e56c5c6bea2f1d5981a948e20c50935cbd Mon Sep 17 00:00:00 2001
From: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
Date: Mon, 5 Nov 2018 18:01:50 +0000
Subject: [PATCH] nlbwmon: receive dhcp interface triggers

Not all interfaces may have been allocated address at nlbwmon startup so
it may not collect statistics as expected/configured.

Add interface triggers to catch dhcp events and restart as required.

Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
(cherry picked from commit 662d3f16d2702fe55116c852f5d456e90891ee89)
---
 net/nlbwmon/Makefile           |  2 +-
 net/nlbwmon/files/nlbwmon.init | 16 ++++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/net/nlbwmon/Makefile b/net/nlbwmon/Makefile
index c8ce443ccb..c20998e220 100644
--- a/net/nlbwmon/Makefile
+++ b/net/nlbwmon/Makefile
@@ -1,7 +1,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=nlbwmon
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=https://github.com/jow-/nlbwmon.git
diff --git a/net/nlbwmon/files/nlbwmon.init b/net/nlbwmon/files/nlbwmon.init
index 53167dc651..15ab5a1187 100755
--- a/net/nlbwmon/files/nlbwmon.init
+++ b/net/nlbwmon/files/nlbwmon.init
@@ -89,3 +89,19 @@ start_service() {
 	procd_close_instance
 }
 
+add_interface_trigger() {
+	local interface ignore
+
+	config_get interface "$1" interface
+	config_get_bool ignore "$1" ignore 0
+
+	[ -n "$interface" -a $ignore -eq 0 ] && procd_add_interface_trigger "interface.*" "$interface" /etc/init.d/nlbwmon reload
+}
+
+service_triggers() {
+	procd_add_reload_trigger "dhcp" "system"
+
+	config_load dhcp
+	config_foreach add_interface_trigger dhcp
+}
+