[OpenWrt-Devel] [PATCH] gre: Generic Routing Encapsulation package support
Hans Dedecker
dedeckeh at gmail.com
Wed Jul 30 07:51:09 EDT 2014
The package supports Generic Routing Encapsulation support by registering following protocol kinds:
-gre
-gretap
-grev6
-grev6tap
Following options are valid for gre and gretap kinds:
-ipaddr
-peeraddr
-df
-mtu
-ttl
-tunlink
-zone
-ikey
-okey
-icsum
-ocsum
-iseqno
-oseqno
The gretap kind supports additionally the network option
Following options are valid for grev6 and grev6tap kinds:
-ip6addr
-peer6addr
-weakif
-mtu
-ttl
-tunlink
-zone
-ikey
-okey
-icsum
-ocsum
-iseqno
-oseqno
The grev6tap kind supports additionally the network option
Typical network config for a GREv4 tunnel :
config interface 'gre'
option peeraddr '172.16.18.240'
option mtu '1400'
option proto 'gre'
option tunlink 'wan'
option zone 'tunnel'
Typical network config for a GREv4 tap tunnel :
config interface 'gretap'
option peeraddr '195.207.5.79'
option mtu '1400'
option proto 'gretap'
option zone 'tunnel'
option tunlink 'wan'
option network 'wlan_ap'
I added myself as maintainer for the moment; feel free to change.
Signed-off-by: Hans Dedecker <dedeckeh at gmail.com>
---
package/network/config/gre/Makefile | 64 +++++++++
package/network/config/gre/files/gre.sh | 235 +++++++++++++++++++++++++++++++
2 files changed, 299 insertions(+)
create mode 100644 package/network/config/gre/Makefile
create mode 100755 package/network/config/gre/files/gre.sh
diff --git a/package/network/config/gre/Makefile b/package/network/config/gre/Makefile
new file mode 100644
index 0000000..efca464
--- /dev/null
+++ b/package/network/config/gre/Makefile
@@ -0,0 +1,64 @@
+#
+# Copyright (C) 2014 OpenWrt.org
+#
+# This is free software, licensed under the GNU General Public License v2.
+# See /LICENSE for more information.
+#
+
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=gre
+PKG_VERSION:=1
+PKG_RELEASE:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/gre/Default
+ SECTION:=net
+ CATEGORY:=Network
+ MAINTAINER:=Hans Dedecker <dedeckeh at gmail.com>
+endef
+
+define Package/gre
+$(call Package/gre/Default)
+ TITLE:=Generic Routing Encapsulation config support
+endef
+
+define Package/gre/description
+ Generic Routing Encapsulation config support (IPv4 and IPv6) in /etc/config/network.
+endef
+
+define Package/grev4
+$(call Package/gre/Default)
+ TITLE:=Generic Routing Encapsulation (IPv4) config support
+ DEPENDS:=@(PACKAGE_gre) +kmod-gre
+endef
+
+define Package/grev4/description
+ Generic Routing Encapsulation config support (IPv4) in /etc/config/network.
+endef
+
+define Package/grev6
+$(call Package/gre/Default)
+ TITLE:=Generic Routing Encapsulation (IPv6) config support
+ DEPENDS:=@(PACKAGE_gre) +kmod-ipv6 +kmod-ip6-gre
+endef
+
+define Package/grev6/description
+ Generic Routing Encapsulation config support (IPv6) in /etc/config/network.
+endef
+
+define Build/Compile
+endef
+
+define Build/Configure
+endef
+
+define Package/gre/install
+ $(INSTALL_DIR) $(1)/lib/netifd/proto
+ $(INSTALL_BIN) ./files/gre.sh $(1)/lib/netifd/proto/gre.sh
+endef
+
+$(eval $(call BuildPackage,gre))
+$(eval $(call BuildPackage,grev4))
+$(eval $(call BuildPackage,grev6))
diff --git a/package/network/config/gre/files/gre.sh b/package/network/config/gre/files/gre.sh
new file mode 100755
index 0000000..38c0fc4
--- /dev/null
+++ b/package/network/config/gre/files/gre.sh
@@ -0,0 +1,235 @@
+#!/bin/sh
+
+[ -n "$INCLUDE_ONLY" ] || {
+ . /lib/functions.sh
+ . /lib/functions/network.sh
+ . ../netifd-proto.sh
+ init_proto "$@"
+}
+
+gre_generic_setup() {
+ local cfg="$1"
+ local mode="$2"
+ local local="$3"
+ local remote="$4"
+ local link="$5"
+ local mtu ttl zone ikey okey icsum ocsum iseqno oseqno
+ json_get_vars mtu ttl zone ikey okey icsum ocsum iseqno oseqno
+
+ [ -z "$zone" ] && zone="wan"
+
+ proto_init_update "$link" 1
+
+ proto_add_tunnel
+ json_add_string mode "$mode"
+ json_add_int mtu "${mtu:-1280}"
+ [ -n "$df" ] && json_add_boolean df "$df"
+ json_add_int ttl "${ttl:-64}"
+ json_add_string local "$local"
+ json_add_string remote "$remote"
+ [ -n "$tunlink" ] && json_add_string link "$tunlink"
+ json_add_string info "${ikey:-0},${okey:-0},${icsum:-0},${ocsum:-0},${iseqno:-0},${oseqno:-0}"
+ proto_close_tunnel
+
+ proto_add_data
+ [ -n "$zone" ] && json_add_string zone "$zone"
+ proto_close_data
+
+ proto_send_update "$cfg"
+}
+
+gre_setup() {
+ local cfg="$1"
+ local mode="$2"
+
+ local ipaddr peeraddr
+ json_get_vars df ipaddr peeraddr tunlink
+
+ [ -z "$peeraddr" ] && {
+ proto_notify_error "$cfg" "MISSING_ADDRESS"
+ proto_block_restart "$cfg"
+ exit
+ }
+
+ ( proto_add_host_dependency "$cfg" "0.0.0.0" "$tunlink" )
+
+ [ -z "$ipaddr" ] && {
+ local wanif="$tunlink"
+ if [ -z $wanif ] && ! network_find_wan wanif; then
+ proto_notify_error "$cfg" "NO_WAN_LINK"
+ exit
+ fi
+
+ if ! network_get_ipaddr ipaddr "$wanif"; then
+ proto_notify_error "$cfg" "NO_WAN_LINK"
+ exit
+ fi
+ }
+
+ [ -z "$df" ] && df="1"
+
+ gre_generic_setup $cfg $mode $ipaddr $peeraddr "gre-$cfg"
+}
+
+proto_gre_setup() {
+ local cfg="$1"
+
+ gre_setup $cfg "greip"
+}
+
+proto_gretap_setup() {
+ local cfg="$1"
+
+ local network
+ json_get_vars network
+
+ gre_setup $cfg "gretapip"
+
+ json_init
+ json_add_string name "gre-$cfg"
+ json_add_boolean link-ext 0
+ json_close_object
+
+ for i in $network; do
+ ubus call network.interface."$i" add_device "$(json_dump)"
+ done
+}
+
+grev6_setup() {
+ local cfg="$1"
+ local mode="$2"
+
+ local ip6addr peer6addr weakif
+ json_get_vars ip6addr peer6addr tunlink weakif
+
+ [ -z "$peer6addr" ] && {
+ proto_notify_error "$cfg" "MISSING_ADDRESS"
+ proto_block_restart "$cfg"
+ exit
+ }
+
+ ( proto_add_host_dependency "$cfg" "::" "$tunlink" )
+
+ [ -z "$ip6addr" ] && {
+ local wanif="$tunlink"
+ if [ -z $wanif ] && ! network_find_wan6 wanif; then
+ proto_notify_error "$cfg" "NO_WAN_LINK"
+ exit
+ fi
+
+ if ! network_get_ipaddr6 ip6addr "$wanif"; then
+ [ -z "$weakif" ] && weakif="lan"
+ if ! network_get_ipaddr6 ip6addr "$weakif"; then
+ proto_notify_error "$cfg" "NO_WAN_LINK"
+ exit
+ fi
+ fi
+ }
+
+ gre_generic_setup $cfg $mode $ip6addr $peer6addr "grev6-$cfg"
+}
+
+proto_grev6_setup() {
+ local cfg="$1"
+
+ grev6_setup $cfg "greip6"
+}
+
+proto_grev6tap_setup() {
+ local cfg="$1"
+
+ local network
+ json_get_vars network
+
+ grev6_setup $cfg "gretapip6"
+
+ json_init
+ json_add_string name "grev6-$cfg"
+ json_add_boolean link-ext 0
+ json_close_object
+
+ for i in $network; do
+ ubus call network.interface."$i" add_device "$(json_dump)"
+ done
+}
+
+gretap_generic_teardown() {
+ local network
+ json_get_vars network
+
+ json_init
+ json_add_string name "$1"
+ json_add_boolean link-ext 0
+ json_close_object
+
+ for i in $network; do
+ ubus call network.interface."$i" remove_device "$(json_dump)"
+ done
+}
+
+proto_gre_teardown() {
+ local cfg="$1"
+}
+
+proto_gretap_teardown() {
+ local cfg="$1"
+
+ gretap_generic_teardown "gre-$cfg"
+}
+
+proto_grev6_teardown() {
+ local cfg="$1"
+}
+
+proto_grev6tap_teardown() {
+ local cfg="$1"
+
+ gretap_generic_teardown "grev6-$cfg"
+}
+
+gre_generic_init_config() {
+ no_device=1
+ available=1
+
+ proto_config_add_int "mtu"
+ proto_config_add_int "ttl"
+ proto_config_add_string "tunlink"
+ proto_config_add_string "zone"
+ proto_config_add_int "ikey"
+ proto_config_add_int "okey"
+ proto_config_add_boolean "icsum"
+ proto_config_add_boolean "ocsum"
+ proto_config_add_boolean "iseqno"
+ proto_config_add_boolean "oseqno"
+}
+
+proto_gre_init_config() {
+ gre_generic_init_config
+ proto_config_add_string "ipaddr"
+ proto_config_add_string "peeraddr"
+ proto_config_add_boolean "df"
+}
+
+proto_gretap_init_config() {
+ proto_gre_init_config
+ proto_config_add_string "network"
+}
+
+proto_grev6_init_config() {
+ gre_generic_init_config
+ proto_config_add_string "ip6addr"
+ proto_config_add_string "peer6addr"
+ proto_config_add_string "weakif"
+}
+
+proto_grev6tap_init_config() {
+ proto_grev6_init_config
+ proto_config_add_string "network"
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+ [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gre
+ [ -f /lib/modules/$(uname -r)/gre.ko ] && add_protocol gretap
+ [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6
+ [ -f /lib/modules/$(uname -r)/ip6_gre.ko ] && add_protocol grev6tap
+}
--
1.7.9.5
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