[openwrt/openwrt] odhcp6c: add skpriority option

[LEDE Commits]

ansuel pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/d5182de637986a62bf654d75d6d8a8dc720b1f28

commit d5182de637986a62bf654d75d6d8a8dc720b1f28
Author: Pacien TRAN-GIRARD <pacien.trangirard at pacien.net>
AuthorDate: Mon May 8 00:46:11 2023 +0200

    odhcp6c: add skpriority option
    
    Allowing the (kernel) packet priority to be set through UCI.
    
    This makes it straightforward to set some VLAN priority for DHCP
    requests through a simple egress qos map. (Avoiding the need for
    firewall matching and marking through iptables, which prevents using
    flow offloading).
    
    (Such priority tag is a hard requirement for some ISPs, such as Orange
    in France).
    
    Depends on: https://github.com/openwrt/odhcp6c/pull/74
    
    Signed-off-by: Pacien TRAN-GIRARD <pacien.trangirard at pacien.net>
---
 package/network/ipv6/odhcp6c/files/dhcpv6.sh | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/package/network/ipv6/odhcp6c/files/dhcpv6.sh b/package/network/ipv6/odhcp6c/files/dhcpv6.sh
index 8c2a0859cb..18c24febd6 100755
--- a/package/network/ipv6/odhcp6c/files/dhcpv6.sh
+++ b/package/network/ipv6/odhcp6c/files/dhcpv6.sh
@@ -34,6 +34,7 @@ proto_dhcpv6_init_config() {
 	proto_config_add_string "vendorclass"
 	proto_config_add_array "sendopts:list(string)"
 	proto_config_add_boolean delegate
+	proto_config_add_int skpriority
 	proto_config_add_int "soltimeout"
 	proto_config_add_boolean fakeroutes
 	proto_config_add_boolean sourcefilter
@@ -54,8 +55,8 @@ proto_dhcpv6_setup() {
 	local config="$1"
 	local iface="$2"
 
-	local reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast noclientfqdn noacceptreconfig ip6prefix ip6prefixes iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass sendopts delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff verbose
-	json_get_vars reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast noclientfqdn noacceptreconfig iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff verbose
+	local reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast noclientfqdn noacceptreconfig ip6prefix ip6prefixes iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass sendopts delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map skpriority soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff verbose
+	json_get_vars reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast noclientfqdn noacceptreconfig iface_dslite iface_map iface_464xlat ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map skpriority soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff verbose
 	json_for_each_item proto_dhcpv6_add_prefix ip6prefix ip6prefixes
 
 	# Configure
@@ -89,6 +90,8 @@ proto_dhcpv6_setup() {
 
 	[ "$keep_ra_dnslifetime" = "1" ] && append opts "-L"
 
+	[ -n "$skpriority" ] && append opts "-K$skpriority"
+
 	[ -n "$ra_holdoff" ] && append opts "-m$ra_holdoff"
 
 	[ "$verbose" = "1" ] && append opts "-v"