odhcp6c: add mtu_dslite option for dhcpv6 proto

This allow configuring the MTU of the ds-lite tunnel.

Updates #8190

Signed-off-by: Mateusz Poliwczak <mpoliwczak34@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/20606
Signed-off-by: Robert Marko <robimarko@gmail.com>

diff --git a/package/network/ipv6/odhcp6c/files/dhcpv6.script b/package/network/ipv6/odhcp6c/files/dhcpv6.script
index b1a99ed98681f5b232f091438236e7bff812c0c8..bbdd80c904b65cab906989aa4e97b89a4773bf5e 100755 (executable)
--- a/package/network/ipv6/odhcp6c/files/dhcpv6.script
+++ b/package/network/ipv6/odhcp6c/files/dhcpv6.script
@@ -192,6 +192,7 @@ setup_interface () {
                json_add_string tunlink "$INTERFACE"
                [ -n "$ZONE_DSLITE" ] || ZONE_DSLITE=$ZONE
                [ -n "$ZONE_DSLITE" ] && json_add_string zone "$ZONE_DSLITE"
+               [ -n "$MTU_DSLITE" ] && json_add_string mtu "$MTU_DSLITE"
                [ -n "$ENCAPLIMIT_DSLITE" ] && json_add_string encaplimit "$ENCAPLIMIT_DSLITE"
                [ -n "$IFACE_DSLITE_DELEGATE" ] && json_add_boolean delegate "$IFACE_DSLITE_DELEGATE"
                json_close_object

diff --git a/package/network/ipv6/odhcp6c/files/dhcpv6.sh b/package/network/ipv6/odhcp6c/files/dhcpv6.sh
index ce530f0ef00cc262cd1212551d6a0e4bf6ae403d..2006ceb56772ba567c2423f628c89af34d2b17dc 100755 (executable)
--- a/package/network/ipv6/odhcp6c/files/dhcpv6.sh
+++ b/package/network/ipv6/odhcp6c/files/dhcpv6.sh
@@ -24,6 +24,7 @@ proto_dhcpv6_init_config() {
        proto_config_add_string iface_dslite
        proto_config_add_string zone_dslite
        proto_config_add_string encaplimit_dslite
+       proto_config_add_int mtu_dslite
        proto_config_add_string iface_map
        proto_config_add_string zone_map
        proto_config_add_string encaplimit_map
@@ -56,8 +57,8 @@ 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 ip6ifaceid 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 ip6ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map skpriority 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 ip6ifaceid 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 mtu_dslite
+       json_get_vars reqaddress reqprefix clientid reqopts defaultreqopts noslaaconly forceprefix extendprefix norelease noserverunicast noclientfqdn noacceptreconfig iface_dslite iface_map iface_464xlat ip6ifaceid userclass vendorclass delegate zone_dslite zone_map zone_464xlat zone encaplimit_dslite encaplimit_map skpriority soltimeout fakeroutes sourcefilter keep_ra_dnslifetime ra_holdoff verbose mtu_dslite
        json_for_each_item proto_dhcpv6_add_prefix ip6prefix ip6prefixes
 
        # Configure
@@ -120,6 +121,7 @@ proto_dhcpv6_setup() {
 
        [ -n "$ip6prefixes" ] && proto_export "USERPREFIX=$ip6prefixes"
        [ -n "$iface_dslite" ] && proto_export "IFACE_DSLITE=$iface_dslite"
+       [ -n "$mtu_dslite" ] && proto_export "MTU_DSLITE=$mtu_dslite"
        [ -n "$iface_map" ] && proto_export "IFACE_MAP=$iface_map"
        [ -n "$iface_464xlat" ] && proto_export "IFACE_464XLAT=$iface_464xlat"
        [ "$delegate" = "0" ] && proto_export "IFACE_DSLITE_DELEGATE=0"