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netifd: Add configurable DHCP release behavior

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Make sending a DHCP release configurable when the client exits allowing to clean up
IP/mac state info in intermediate devices.

Signed-off-by: Hans Dedecker <dedeckeh@gmail.com>
This commit is contained in:
Hans Dedecker 2016-04-28 13:40:17 +02:00 committed by Jo-Philipp Wich
parent cf3b3cfc56
commit a83f049b5b
1 changed files with 5 additions and 3 deletions
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8
package/network/config/netifd/files/lib/netifd/proto/dhcp.sh
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@ -12,6 +12,7 @@ proto_dhcp_init_config() {
proto_config_add_string clientid
proto_config_add_string vendorid
proto_config_add_boolean 'broadcast:bool'
proto_config_add_boolean 'release:bool'
proto_config_add_string 'reqopts:list(string)'
proto_config_add_string iface6rd
proto_config_add_string sendopts
@ -26,8 +27,8 @@ proto_dhcp_setup() {
local config="$1"
local iface="$2"
local ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone mtu6rd customroutes
json_get_vars ipaddr hostname clientid vendorid broadcast reqopts iface6rd sendopts delegate zone6rd zone mtu6rd customroutes
local ipaddr hostname clientid vendorid broadcast release reqopts iface6rd sendopts delegate zone6rd zone mtu6rd customroutes
json_get_vars ipaddr hostname clientid vendorid broadcast release reqopts iface6rd sendopts delegate zone6rd zone mtu6rd customroutes
local opt dhcpopts
for opt in $reqopts; do
@ -39,6 +40,7 @@ proto_dhcp_setup() {
done
[ "$broadcast" = 1 ] && broadcast="-B" || broadcast=
[ "$release" = 1 ] && release="-R" || release=
[ -n "$clientid" ] && clientid="-x 0x3d:${clientid//:/}" || clientid="-C"
[ -n "$iface6rd" ] && proto_export "IFACE6RD=$iface6rd"
[ "$iface6rd" != 0 -a -f /lib/netifd/proto/6rd.sh ] && append dhcpopts "-O 212"
@ -56,7 +58,7 @@ proto_dhcp_setup() {
${ipaddr:+-r $ipaddr} \
${hostname:+-H $hostname} \
${vendorid:+-V $vendorid} \
$clientid $broadcast $dhcpopts
$clientid $broadcast $release $dhcpopts
}
proto_dhcp_renew() {