finally move buildroot-ng to trunk
[openwrt/staging/dedeckeh.git] / package / base-files / default / lib / network / config.sh
1 #!/bin/sh
2 # Copyright (C) 2006 OpenWrt.org
3
4 # DEBUG="echo"
5
6 find_config() {
7 local iftype device iface ifaces ifn
8 for ifn in $interfaces; do
9 config_get iftype "$ifn" type
10 config_get iface "$ifn" ifname
11 case "$iftype" in
12 bridge) config_get ifaces "$ifn" ifnames;;
13 esac
14 config_get device "$ifn" device
15 for ifc in $device $iface $ifaces; do
16 [ "$ifc" = "$1" ] && {
17 echo "$ifn"
18 return 0
19 }
20 done
21 done
22
23 return 1;
24 }
25
26 scan_interfaces() {
27 local mode iftype iface ifname device
28 interfaces=
29 config_cb() {
30 config_get iftype "$CONFIG_SECTION" TYPE
31 case "$iftype" in
32 interface)
33 config_get proto "$CONFIG_SECTION" proto
34 append interfaces "$CONFIG_SECTION"
35 config_get iftype "$CONFIG_SECTION" type
36 config_get ifname "$CONFIG_SECTION" ifname
37 config_set "$CONFIG_SECTION" device "$ifname"
38 case "$iftype" in
39 bridge)
40 config_set "$CONFIG_SECTION" ifnames "$ifname"
41 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
42 ;;
43 esac
44 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
45 ;;
46 esac
47 }
48 config_load network
49 }
50
51 add_vlan() {
52 local vif="${1%\.*}"
53
54 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
55 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
56 $DEBUG vconfig add "$vif" "${1##*\.}"
57 }
58 }
59
60 setup_interface() {
61 local iface="$1"
62 local config="$2"
63 local proto
64
65 [ -n "$config" ] || {
66 config=$(find_config "$iface")
67 [ "$?" = 0 ] || return 1
68 }
69
70 proto="${3:-$(config_get "$config" proto)}"
71 config_get iftype "$config" type
72
73 # Setup VLAN interfaces
74 add_vlan "$iface"
75
76 # Setup bridging
77 case "$iftype" in
78 bridge)
79 ifconfig "$iface" up 2>/dev/null >/dev/null
80 ifconfig "br-$config" 2>/dev/null >/dev/null && {
81 $DEBUG brctl addif "br-$config" "$iface"
82 return 0
83 } || {
84 $DEBUG brctl addbr "br-$config"
85 $DEBUG brctl setfd "br-$config" 0
86 $DEBUG brctl addif "br-$config" "$iface"
87 iface="br-$config"
88 }
89 ;;
90 esac
91
92 # Interface settings
93 config_get mtu "$config" mtu
94 $DEBUG ifconfig "$iface" ${mtu:+mtu $mtu} up
95
96 pidfile="/var/run/$iface.pid"
97 case "$proto" in
98 static)
99 config_get ipaddr "$config" ipaddr
100 config_get netmask "$config" netmask
101 [ -z "$ipaddr" -o -z "$netmask" ] && return 1
102
103 config_get ip6addr "$config" ip6addr
104 config_get gateway "$config" gateway
105 config_get dns "$config" dns
106
107 $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask"
108 [ -z "$gateway" ] || route add default gw "$gateway"
109 [ -z "$dns" -o -f /tmp/resolv.conf ] || {
110 for ns in $dns; do
111 echo "nameserver $ns" >> /tmp/resolv.conf
112 done
113 }
114
115 env -i ACTION="ifup" INTERFACE="config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" &
116 ;;
117 dhcp)
118 pid="$(cat "$pidfile" 2>/dev/null)"
119 [ -n "$pid" -a -d "/proc/$pid" ] && kill -9 "$pid"
120
121 config_get ipaddr "$config" ipaddr
122 config_get netmask "$config" netmask
123 config_get hostname "$config" hostname
124 config_get proto1 "$config" proto
125
126 [ -z "$ipaddr" ] || \
127 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
128
129 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
130 [ "$proto1" != "$proto" ] && dhcpopts="-n -q"
131 $DEBUG udhcpc -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &}
132 ;;
133 *)
134 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
135 eval "setup_interface_$proto '$iface' '$config' '$proto'"
136 else
137 echo "Interface type $proto not supported."
138 return 1
139 fi
140 ;;
141 esac
142 }
143