Add more options to dhcrelay UCI and init script:
- enabled
- interfaces: Listen interfaces
- relay_mode: What to do about packets that already have a relay option
Also mark /etc/config/dhcrelay as conffile
Signed-off-by: Bruno Randolf <b...@einfach.org>
---
net/isc-dhcp/Makefile | 8 ++++++++
net/isc-dhcp/files/dhcrelay4.init | 36 ++++++++++++++++++++++++++++------
net/isc-dhcp/files/etc/config/dhcrelay | 24 ++++++++++++++++++-----
3 files changed, 57 insertions(+), 11 deletions(-)
diff --git a/net/isc-dhcp/Makefile b/net/isc-dhcp/Makefile
index aa27aca..5e5471f 100644
--- a/net/isc-dhcp/Makefile
+++ b/net/isc-dhcp/Makefile
@@ -55,11 +55,19 @@ $(call Package/isc-dhcp-relay-ipv6/description)
This package is compiled with IPv4 support only.
endef
+define Package/isc-dhcp-relay-ipv4/conffiles
+/etc/config/dhcrelay
+endef
+
define Package/isc-dhcp-relay-ipv6/description
$(call Package/isc-dhcp-relay/description)
This package is compiled with IPv4 and IPv6 support.
endef
+define Package/isc-dhcp-relay-ipv6/conffiles
+/etc/config/dhcrelay
+endef
+
define Package/isc-dhcp-client-ipv4
$(call Package/isc-dhcp/Default)
TITLE+= client (without IPv6)
diff --git a/net/isc-dhcp/files/dhcrelay4.init
b/net/isc-dhcp/files/dhcrelay4.init
index 70905cf..e1e6871 100644
--- a/net/isc-dhcp/files/dhcrelay4.init
+++ b/net/isc-dhcp/files/dhcrelay4.init
@@ -8,15 +8,39 @@ SERVICE_PID_FILE="/var/run/dhcrelay4.pid"
SERVICE_USE_PID=1
start() {
- local relay_dhcpserver
+ . /lib/functions/network.sh
+ config_load dhcrelay
+ local args=""
- config_load dhcrelay
- config_get relay_dhcpserver ipv4 dhcpserver
+ local enabled
+ config_get_bool enabled ipv4 enabled 0
+ [ "$enabled" -eq 0 ] && return 0
- service_start /usr/sbin/dhcrelay -4 -q \
- -pf $SERVICE_PID_FILE $relay_dhcpserver
+ # listen interfaces
+ local interfaces
+ local ifname
+ config_get interfaces ipv4 interfaces
+ for net in $interfaces; do
+ if network_get_device ifname "$net"; then
+ append args "-i $ifname"
+ fi
+ done
+
+ # relay mode
+ local relay_mode
+ config_get relay_mode ipv4 relay_mode
+ [ -n "$relay_mode" ] && append args "-m $relay_mode"
+
+ # dhcp server address
+ local server
+ config_get server ipv4 dhcpserver
+ [ -n "$server" ] || return 0
+ append args "$server"
+
+ service_start /usr/sbin/dhcrelay -4 -q \
+ -pf $SERVICE_PID_FILE $args
}
stop() {
- service_stop /usr/sbin/dhcrelay
+ service_stop /usr/sbin/dhcrelay
}
diff --git a/net/isc-dhcp/files/etc/config/dhcrelay
b/net/isc-dhcp/files/etc/config/dhcrelay
index 5fde239..1b89782 100644
--- a/net/isc-dhcp/files/etc/config/dhcrelay
+++ b/net/isc-dhcp/files/etc/config/dhcrelay
@@ -1,10 +1,24 @@
config dhcrelay ipv4
- option dhcpserver '192.0.2.10'
+ option 'enabled' '0'
+
+ # IP address of the server
+ option 'dhcpserver' '192.0.2.10'
+
+ # network interfaces to listen on (e.g. lan or wan)
+ option 'interfaces' ''
+
+ # What to do about packets that already have a relay option:
+ # 'append': Forward and append our own relay option
+ # 'replace': Forward, but replace theirs with ours (default)
+ # 'forward': Forward without changes
+ # 'discard': Don't forward
+ option 'relay_mode' ''
+
config dhcrelay ipv6
-# option dhcpserver '2001:db8:1::1'
- option upper 'eth1'
- list lower 'eth0.2'
- list lower 'eth0.3'
+# option dhcpserver '2001:db8:1::1'
+ option upper 'eth1'
+ list lower 'eth0.2'
+ list lower 'eth0.3'
--
1.8.1.2
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