openwrt之network配置文件
config network,主要负责网络接口的配置
openwrt 19.07.04
- netowrk 配置文件
root@OpenWrt:/# cat /etc/config/network
config interface 'loopback'
option ifname 'lo'
option proto 'static'
option ipaddr '127.0.0.1'
option netmask '255.0.0.0'
config globals 'globals'
option ula_prefix 'fdfd:8a0a:d67d::/48'
config interface 'lan'
option type 'bridge'
option ifname 'eth0.1'
option proto 'static'
option ipaddr '192.168.1.1'
option netmask '255.255.255.0'
option ip6assign '60'
config device 'lan_eth0_1_dev'
option name 'eth0.1'
option macaddr 'ff:ff:ff:ff:ff:ff'
config interface 'wan'
option ifname 'eth0.2'
option metric '1'
option proto 'dhcp'
config device 'wan_eth0_2_dev'
option name 'eth0.2'
option macaddr 'ff:ff:ff:ff:ff:ff'
config interface 'wan6'
option ifname 'eth0.2'
option proto 'dhcpv6'
config interface 'wan_4g'
option ifname 'eth1'
option metric '3'
option proto 'dhcp'
config interface 'wan_4g6'
option ifname 'eth1'
option proto 'dhcpv6'
config switch
option name 'switch0'
option reset '1'
option enable_vlan '1'
config switch_vlan
option device 'switch0'
option vlan '1'
option ports '0 6t'
config switch_vlan
option device 'switch0'
option vlan '2'
option ports '4 6t'
- 该配置自动生成，由02_network进行修改
# 配置switch，一个lan，一个wan
ucidef_add_switch "switch0" \
"0:lan" "4:wan" "6@eth0"
# 增加4g wan
ucidef_set_interface "wan_4g" ifname "eth1" protocol "${2:-dhcp}"
# metric设置跃点，网口优先，，跃点小，优先级高,,需要同步修改config_generate,增加metric
ucidef_set_interface "wan_4g" metric 3
ucidef_set_interface "wan" metric 1
- 02_network，并不直接生成/etc/config/network，而是生成一个board.json配置文件，其中network节点，就是有02_network添加
root@OpenWrt:/# cat /etc/board.json
{
"model": {
"id": "linkits7688",
"name": "MediaTek LinkIt Smart 7688"
},
"led": {
"led_wifi": {
"name": "wifi",
"sysfs": "green:wifi",
"type": "netdev",
"device": "wlan0",
"mode": "link tx rx"
}
},
"switch": {
"switch0": {
"enable": true,
"reset": true,
"ports": [
{
"num": 0,
"role": "lan"
},
{
"num": 4,
"role": "wan"
},
{
"num": 6,
"device": "eth0",
"need_tag": false,
"want_untag": false
}
],
"roles": [
{
"role": "lan",
"ports": "0 6t",
"device": "eth0.1"
},
{
"role": "wan",
"ports": "4 6t",
"device": "eth0.2"
}
]
}
},
"network": {
"lan": {
"ifname": "eth0.1",
"protocol": "static",
"macaddr": "ff:ff:ff:ff:ff:ff"
},
"wan": {
"ifname": "eth0.2",
"protocol": "dhcp",
"metric": "1",
"macaddr": "ff:ff:ff:ff:ff:ff"
},
"wan_4g": {
"ifname": "eth1",
"protocol": "dhcp",
"metric": "3"
}
}
}
root@OpenWrt:/#
- 再由config_generate脚本，生成/etc/config/network、system等配置文件。
- 默认没有metric选项，如下修改，增加metric
generate_network() {
# eric++,metric
local ifname macaddr protocol type ipaddr netmask metric
json_select network
json_select "$1"
json_get_vars ifname macaddr protocol ipaddr netmask metric
json_select ..
json_select ..
[ -n "$ifname" ] || return
# force bridge for multi-interface devices (and lan)
case "$1:$ifname" in
*\ * | lan:*) type="bridge" ;;
esac
uci -q batch <<-EOF
delete network.$1
set network.$1='interface'
set network.$1.type='$type'
set network.$1.ifname='$ifname'
set network.$1.proto='none'
set network.$1.metric='$metric'
EOF
- 以上是openwrt network配置文件自动生成的逻辑，当然也可以在自定义启动脚本中调用uci API自行修改！