package/base-files/files/etc/hotplug.d/iface/10-routes

   1 add_route() {
   2         local config="$1"
   3
   4         # is this route intended for the
   5         # $INTERFACE of this hotplug event
   6         config_get interface "$config" interface
   7         [ "$interface" != "$INTERFACE" ] && return 0
   8
   9         # get the real interface name from network config
  10         config_get dev "$interface" ifname
  11
  12         config_get target "$config" target
  13         config_get netmask "$config" netmask
  14         config_get gateway "$config" gateway
  15         config_get metric "$config" metric
  16         config_get mtu "$config" mtu
  17
  18         # make sure there is a gateway and a target
  19         [ -n "$target" ] || {
  20                 echo "Missing target in route section $config"
  21                 return 1
  22         }
  23         [ -n "$gateway" ] || {
  24                 config_get gateway "$interface" gateway
  25         }
  26
  27         # handle "0.0.0.0" as "no gateway given" to allow
  28         # defining gateway-less routes while still keeping
  29         # the possibility to have static routes with a
  30         # proper gateway on interfaces with dynamic ips
  31         [ "$gateway" = "0.0.0.0" ] && gateway=""
  32
  33         dest="${netmask:+-net "$target" netmask "$netmask"}"
  34         dest="${dest:--host "$target"}"
  35
  36         /sbin/route add $dest ${gateway:+gw "$gateway"} \
  37                 ${dev:+dev "$dev"} ${metric:+ metric "$metric"} \
  38                 ${mtu:+mss "$mtu"}
  39 }
  40
  41 add_route6() {
  42         local config="$1"
  43
  44         # is this route intended for the
  45         # $INTERFACE of this hotplug event
  46         config_get interface "$config" interface
  47         [ "$interface" != "$INTERFACE" ] && return 0
  48
  49         # get the real interface name from network config
  50         config_get dev "$interface" ifname
  51
  52         config_get target "$config" target
  53         config_get gateway "$config" gateway
  54         config_get metric "$config" metric
  55         config_get mtu "$config" mtu
  56
  57         # make sure there is a gateway and a target
  58         [ -n "$target" ] || {
  59                 echo "Missing target in route section $config"
  60                 return 1
  61         }
  62         [ -n "$gateway" ] || {
  63                 config_get gateway "$interface" gateway
  64         }
  65
  66         /sbin/route -A inet6 add $target ${gateway:+gw "$gateway"} \
  67                 ${dev:+dev "$dev"} ${metric:+ metric "$metric"} \
  68                 ${mtu:+mss "$mtu"}
  69 }
  70
  71 # Skip fake devices (e.g. relayd)
  72 grep -qs "^ *$DEVICE:" /proc/net/dev || exit 0
  73
  74 case "$ACTION" in
  75         ifup)
  76                 include /lib/network
  77                 scan_interfaces
  78
  79                 # Setup aliases
  80                 config_set "$INTERFACE" aliases ""
  81                 config_set "$INTERFACE" alias_count 0
  82                 config_foreach setup_interface_alias alias "$INTERFACE" "$DEVICE"
  83
  84                 # Save alias references in state vars
  85                 local aliases
  86                 config_get aliases "$INTERFACE" aliases
  87                 [ -z "$aliases" ] || uci_set_state network "$INTERFACE" aliases "$aliases"
  88
  89                 # Make ip6addr of parent iface the main address again
  90                 local ip6addr
  91                 config_get ip6addr "$INTERFACE" ip6addr
  92                 [ -z "$ip6addr" ] || {
  93                         ifconfig "$DEVICE" del "$ip6addr"
  94                         ifconfig "$DEVICE" add "$ip6addr"
  95                 }
  96
  97                 # Setup sysctls
  98                 local proto accept_ra send_rs
  99
 100                 config_get proto "$INTERFACE" proto
 101                 if [ "$proto" = dhcp ]; then
 102                         accept_ra=1
 103                         send_rs=0
 104                 else
 105                         accept_ra=0
 106                         send_rs=1
 107                 fi
 108
 109                 config_get_bool accept_ra "$INTERFACE" accept_ra $accept_ra
 110                 [ $accept_ra -eq 0 ] || {
 111                         logger -t ifup "Allowing Router Advertisements on $INTERFACE ($DEVICE)"
 112                         accept_ra=2
 113                 }
 114                 do_sysctl "net.ipv6.conf.$DEVICE.accept_ra" $accept_ra
 115
 116                 config_get_bool send_rs "$INTERFACE" send_rs $send_rs
 117                 [ $send_rs -eq 0 ] || {
 118                         logger -t ifup "Enabling Router Solicitations on $INTERFACE ($DEVICE)"
 119                         send_rs=2
 120                 }
 121                 do_sysctl "net.ipv6.conf.$DEVICE.forwarding" $send_rs
 122
 123
 124                 # Setup routes
 125                 config_foreach "add_route" route
 126                 config_foreach "add_route6" route6
 127         ;;
 128         ifdown)
 129                 # Bring down named aliases
 130                 local device=$(uci_get_state network "$INTERFACE" device)
 131                 local ifn
 132                 for ifn in $(ifconfig | sed -ne "s/^\(\($DEVICE${device:+\|$device}\|br-$INTERFACE\):[^[:space:]]\+\).*/\1/p"); do
 133                         ifconfig "$ifn" down
 134                 done
 135         ;;
 136 esac
 137