Set up ipv6 address if provided in network configuration (#1028)
[openwrt/svn-archive/archive.git] / package / base-files / files / 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 case "$1" in
31 interface)
32 config_set "$2" auto 1
33 ;;
34 esac
35 config_get iftype "$CONFIG_SECTION" TYPE
36 case "$iftype" in
37 interface)
38 config_get proto "$CONFIG_SECTION" proto
39 append interfaces "$CONFIG_SECTION"
40 config_get iftype "$CONFIG_SECTION" type
41 config_get ifname "$CONFIG_SECTION" ifname
42 config_set "$CONFIG_SECTION" device "$ifname"
43 case "$iftype" in
44 bridge)
45 config_set "$CONFIG_SECTION" ifnames "$ifname"
46 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
47 ;;
48 esac
49 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
50 ;;
51 esac
52 }
53 config_load network
54 }
55
56 add_vlan() {
57 local vif="${1%\.*}"
58
59 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
60 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
61 $DEBUG vconfig add "$vif" "${1##*\.}"
62 }
63 }
64
65 setup_interface() {
66 local iface="$1"
67 local config="$2"
68 local proto
69 local macaddr
70
71 [ -n "$config" ] || {
72 config=$(find_config "$iface")
73 [ "$?" = 0 ] || return 1
74 }
75
76 proto="${3:-$(config_get "$config" proto)}"
77 config_get iftype "$config" type
78
79 ifconfig "$iface" 2>/dev/null >/dev/null && {
80 # make sure the interface is removed from any existing bridge and brought down
81 ifconfig "$iface" down
82 unbridge "$iface"
83 }
84
85 # Setup VLAN interfaces
86 add_vlan "$iface"
87
88 # Setup bridging
89 case "$iftype" in
90 bridge)
91 ifconfig "$iface" up 2>/dev/null >/dev/null
92 ifconfig "br-$config" 2>/dev/null >/dev/null && {
93 $DEBUG brctl addif "br-$config" "$iface"
94 return 0
95 } || {
96 $DEBUG brctl addbr "br-$config"
97 $DEBUG brctl setfd "br-$config" 0
98 $DEBUG brctl addif "br-$config" "$iface"
99 iface="br-$config"
100 }
101 ;;
102 esac
103
104 # Interface settings
105 config_get mtu "$config" mtu
106 config_get macaddr "$config" macaddr
107 $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
108
109 pidfile="/var/run/$iface.pid"
110 case "$proto" in
111 static)
112 config_get ipaddr "$config" ipaddr
113 config_get netmask "$config" netmask
114 [ -z "$ipaddr" -o -z "$netmask" ] && return 1
115
116 config_get ip6addr "$config" ip6addr
117 config_get gateway "$config" gateway
118 config_get dns "$config" dns
119
120 $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask"
121 $DEBUG ifconfig "$iface" inet6 add "$ip6addr"
122 [ -z "$gateway" ] || route add default gw "$gateway"
123 [ -z "$dns" -o -f /tmp/resolv.conf ] || {
124 for ns in $dns; do
125 echo "nameserver $ns" >> /tmp/resolv.conf
126 done
127 }
128
129 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug "iface" &
130 ;;
131 dhcp)
132 # prevent udhcpc from starting more than once
133 lock "/var/lock/dhcp-$iface"
134 pid="$(cat "$pidfile" 2>/dev/null)"
135 [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null && {
136 lock -u "/var/lock/dhcp-$iface"
137 return 0
138 }
139
140 config_get ipaddr "$config" ipaddr
141 config_get netmask "$config" netmask
142 config_get hostname "$config" hostname
143 config_get proto1 "$config" proto
144
145 [ -z "$ipaddr" ] || \
146 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
147
148 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
149 [ "$proto1" != "$proto" ] && dhcpopts="-n -q"
150 $DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} -b -p "$pidfile" ${dhcpopts:- -R &}
151 lock -u "/var/lock/dhcp-$iface"
152 ;;
153 *)
154 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
155 eval "setup_interface_$proto '$iface' '$config' '$proto'"
156 else
157 echo "Interface type $proto not supported."
158 return 1
159 fi
160 ;;
161 esac
162 }
163
164 unbridge() {
165 local dev="$1"
166 local brdev
167
168 brctl show | grep "$dev" >/dev/null && {
169 # interface is still part of a bridge, correct that
170
171 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
172 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
173 done
174 }
175 }