link default routes added by the network scripts to the appropriate interface (#2621)
[openwrt.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 cfgfile="$1"
28 local mode iftype iface ifname device
29 interfaces=
30 config_cb() {
31 case "$1" in
32 interface)
33 config_set "$2" auto 1
34 ;;
35 esac
36 config_get iftype "$CONFIG_SECTION" TYPE
37 case "$iftype" in
38 interface)
39 config_get proto "$CONFIG_SECTION" proto
40 append interfaces "$CONFIG_SECTION"
41 config_get iftype "$CONFIG_SECTION" type
42 config_get ifname "$CONFIG_SECTION" ifname
43 config_get device "$CONFIG_SECTION" device
44 config_set "$CONFIG_SECTION" device "${device:-$ifname}"
45 case "$iftype" in
46 bridge)
47 config_set "$CONFIG_SECTION" ifnames "${device:-$ifname}"
48 config_set "$CONFIG_SECTION" ifname br-"$CONFIG_SECTION"
49 ;;
50 esac
51 ( type "scan_$proto" ) >/dev/null 2>/dev/null && eval "scan_$proto '$CONFIG_SECTION'"
52 ;;
53 esac
54 }
55 config_load "${cfgfile:-network}"
56 }
57
58 add_vlan() {
59 local vif="${1%\.*}"
60
61 [ "$1" = "$vif" ] || ifconfig "$1" >/dev/null 2>/dev/null || {
62 ifconfig "$vif" up 2>/dev/null >/dev/null || add_vlan "$vif"
63 $DEBUG vconfig add "$vif" "${1##*\.}"
64 }
65 }
66
67 # sort the device list, drop duplicates
68 sort_list() {
69 local arg="$*"
70 (
71 for item in $arg; do
72 echo "$item"
73 done
74 ) | sort -u
75 }
76
77 # Create the interface, if necessary.
78 # Return status 0 indicates that the setup_interface() call should continue
79 # Return status 1 means that everything is set up already.
80
81 prepare_interface() {
82 local iface="$1"
83 local config="$2"
84
85 # if we're called for the bridge interface itself, don't bother trying
86 # to create any interfaces here. The scripts have already done that, otherwise
87 # the bridge interface wouldn't exist.
88 [ "br-$config" = "$iface" -o -e "$iface" ] && return 0;
89
90 ifconfig "$iface" 2>/dev/null >/dev/null && {
91 # make sure the interface is removed from any existing bridge and brought down
92 ifconfig "$iface" down
93 unbridge "$iface"
94 }
95
96 # Setup VLAN interfaces
97 add_vlan "$iface"
98 ifconfig "$iface" 2>/dev/null >/dev/null || return 0
99
100 # Setup bridging
101 config_get iftype "$config" type
102 config_get stp "$config" stp
103 case "$iftype" in
104 bridge)
105 [ -x /usr/sbin/brctl ] && {
106 ifconfig "br-$config" 2>/dev/null >/dev/null && {
107 local newdevs=
108
109 config_get devices "$config" device
110 for dev in $(sort_list "$devices" "$iface"); do
111 append newdevs "$dev"
112 done
113 uci_set_state network "$config" device "$newdevs"
114 $DEBUG brctl addif "br-$config" "$iface"
115 # Bridge existed already. No further processing necesary
116 } || {
117 $DEBUG brctl addbr "br-$config"
118 $DEBUG brctl setfd "br-$config" 0
119 $DEBUG ifconfig "br-$config" up
120 $DEBUG brctl addif "br-$config" "$iface"
121 $DEBUG brctl stp "br-$config" ${stp:-off}
122 # Creating the bridge here will have triggered a hotplug event, which will
123 # result in another setup_interface() call, so we simply stop processing
124 # the current event at this point.
125 }
126 ifconfig "$iface" up 2>/dev/null >/dev/null
127 return 1
128 }
129 ;;
130 esac
131 return 0
132 }
133
134 set_interface_ifname() {
135 local config="$1"
136 local ifname="$2"
137
138 config_get device "$1" device
139 uci_set_state network "$config" ifname "$ifname"
140 uci_set_state network "$config" device "$device"
141 }
142
143 setup_interface() {
144 local iface="$1"
145 local config="$2"
146 local proto
147 local macaddr
148
149 [ -n "$config" ] || {
150 config=$(find_config "$iface")
151 [ "$?" = 0 ] || return 1
152 }
153 proto="${3:-$(config_get "$config" proto)}"
154
155 prepare_interface "$iface" "$config" || return 0
156
157 [ "$iface" = "br-$config" ] && {
158 # need to bring up the bridge and wait a second for
159 # it to switch to the 'forwarding' state, otherwise
160 # it will lose its routes...
161 ifconfig "$iface" up
162 sleep 1
163 }
164
165 # Interface settings
166 config_get mtu "$config" mtu
167 config_get macaddr "$config" macaddr
168 grep "$iface:" /proc/net/dev > /dev/null && \
169 $DEBUG ifconfig "$iface" ${macaddr:+hw ether "$macaddr"} ${mtu:+mtu $mtu} up
170 set_interface_ifname "$config" "$iface"
171
172 pidfile="/var/run/$iface.pid"
173 case "$proto" in
174 static)
175 config_get ipaddr "$config" ipaddr
176 config_get netmask "$config" netmask
177 config_get ip6addr "$config" ip6addr
178 [ -z "$ipaddr" -o -z "$netmask" ] && [ -z "$ip6addr" ] && return 1
179
180 config_get gateway "$config" gateway
181 config_get ip6gw "$config" ip6gw
182 config_get dns "$config" dns
183 config_get bcast "$config" broadcast
184
185 [ -z "$ipaddr" ] || $DEBUG ifconfig "$iface" "$ipaddr" netmask "$netmask" broadcast "${bcast:-+}"
186 [ -z "$ip6addr" ] || $DEBUG ifconfig "$iface" add "$ip6addr"
187 [ -z "$gateway" ] || $DEBUG route add default gw "$gateway" dev "$iface"
188 [ -z "$ip6gw" ] || $DEBUG route -A inet6 add default gw "$ip6gw" dev "$iface"
189 [ -z "$dns" ] || {
190 for ns in $dns; do
191 grep "$ns" /tmp/resolv.conf.auto 2>/dev/null >/dev/null || {
192 echo "nameserver $ns" >> /tmp/resolv.conf.auto
193 }
194 done
195 }
196
197 env -i ACTION="ifup" INTERFACE="$config" DEVICE="$iface" PROTO=static /sbin/hotplug-call "iface" &
198 ;;
199 dhcp)
200 # prevent udhcpc from starting more than once
201 lock "/var/lock/dhcp-$iface"
202 pid="$(cat "$pidfile" 2>/dev/null)"
203 [ -d "/proc/$pid" ] && grep udhcpc "/proc/${pid}/cmdline" >/dev/null 2>/dev/null && {
204 lock -u "/var/lock/dhcp-$iface"
205 return 0
206 }
207
208 config_get ipaddr "$config" ipaddr
209 config_get netmask "$config" netmask
210 config_get hostname "$config" hostname
211 config_get proto1 "$config" proto
212 config_get clientid "$config" clientid
213
214 [ -z "$ipaddr" ] || \
215 $DEBUG ifconfig "$iface" "$ipaddr" ${netmask:+netmask "$netmask"}
216
217 # don't stay running in background if dhcp is not the main proto on the interface (e.g. when using pptp)
218 [ ."$proto1" != ."$proto" ] && dhcpopts="-n -q"
219 $DEBUG eval udhcpc -t 0 -i "$iface" ${ipaddr:+-r $ipaddr} ${hostname:+-H $hostname} ${clientid:+-c $clientid} -b -p "$pidfile" ${dhcpopts:- -R &}
220 lock -u "/var/lock/dhcp-$iface"
221 ;;
222 *)
223 if ( eval "type setup_interface_$proto" ) >/dev/null 2>/dev/null; then
224 eval "setup_interface_$proto '$iface' '$config' '$proto'"
225 else
226 echo "Interface type $proto not supported."
227 return 1
228 fi
229 ;;
230 esac
231 }
232
233 unbridge() {
234 local dev="$1"
235 local brdev
236
237 [ -x /usr/sbin/brctl ] || return 0
238 brctl show | grep "$dev" >/dev/null && {
239 # interface is still part of a bridge, correct that
240
241 for brdev in $(brctl show | awk '$2 ~ /^[0-9].*\./ { print $1 }'); do
242 brctl delif "$brdev" "$dev" 2>/dev/null >/dev/null
243 done
244 }
245 }
This page took 0.060898 seconds and 5 git commands to generate.