[openwrt/openwrt] lldpd: allow disabling LLDP protcol

[LEDE Commits]

robimarko pushed a commit to openwrt/openwrt.git, branch openwrt-23.05:
https://git.openwrt.org/7f58fc14d8356b84bfe5d43339720f721111a877

commit 7f58fc14d8356b84bfe5d43339720f721111a877
Author: Stephen Howell <howels at allthatwemight.be>
AuthorDate: Sun Dec 17 00:17:14 2023 +0000

    lldpd: allow disabling LLDP protcol
    
    add option to allow LLDP disabling while using other supported protocols
    
    Signed-off-by: Stephen Howell <howels at allthatwemight.be>
    (cherry picked from commit 61dbe756d8edc1adcd152920f71d6dce26232662)
    Link: https://github.com/openwrt/openwrt/pull/15299
    Signed-off-by: Robert Marko <robimarko at gmail.com>
---
 package/network/services/lldpd/files/lldpd.init | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/package/network/services/lldpd/files/lldpd.init b/package/network/services/lldpd/files/lldpd.init
index db81f8a9ae..98e7e97193 100644
--- a/package/network/services/lldpd/files/lldpd.init
+++ b/package/network/services/lldpd/files/lldpd.init
@@ -43,6 +43,7 @@ get_config_restart_hash() {
 		config_get_bool v 'config' 'lldpmed_no_inventory'; append _string "$v" ","
 	fi
 	config_get_bool v 'config' 'enable_lldp' 1; append _string "$v" ","
+	config_get_bool v 'config' 'force_lldp'; append _string "$v" ","
 	config_get_bool v 'config' 'enable_cdp'; append _string "$v" ","
 	config_get_bool v 'config' 'enable_edp'; append _string "$v" ","
 	config_get_bool v 'config' 'enable_fdp'; append _string "$v" ","
@@ -131,6 +132,8 @@ write_lldpd_conf()
 
 start_service() {
 
+	local enable_lldp
+	local force_lldp
 	local enable_cdp
 	local enable_fdp
 	local enable_sonmp
@@ -144,6 +147,8 @@ start_service() {
 	local filter
 
 	config_load 'lldpd'
+	config_get_bool enable_lldp 'config' 'enable_lldp' 1
+	config_get_bool force_lldp 'config' 'force_lldp' 0
 	config_get_bool enable_cdp 'config' 'enable_cdp' 0
 	config_get_bool enable_fdp 'config' 'enable_fdp' 0
 	config_get_bool enable_sonmp 'config' 'enable_sonmp' 0
@@ -168,6 +173,15 @@ start_service() {
 	procd_set_param command ${LLDPDBIN}
 	procd_append_param command -d
 
+	if [ $enable_lldp -gt 0 ]; then
+		if [ $force_lldp -gt 0 ]; then
+			procd_append_param command '-l'
+		fi
+	else
+		# Disable LLDP
+		procd_append_param command '-ll'
+	fi
+
 	[ $enable_cdp -gt 0 ] && procd_append_param command '-c'
 	[ $enable_fdp -gt 0 ] && procd_append_param command '-f'
 	[ $enable_sonmp -gt 0 ] && procd_append_param command '-s'