package/network/config/vfconfig/files/vfconfig.sh

   1 #!/bin/sh
   2
   3 . /lib/functions.sh
   4 . /lib/functions/network.sh
   5
   6 bridge_names=""
   7
   8 warn() {
   9         echo "$@" >&2
  10 }
  11
  12 clear_port_vlans() {
  13         local port=$1
  14         local self=$2
  15         local vlans=$(bridge vlan show dev "$port" | sed -ne 's#^[^ ]* \+\([0-9]\+\).*$#\1#p')
  16
  17         local vlan
  18         for vlan in $vlans; do
  19                 bridge vlan del vid "$vlan" dev "$port" $self
  20         done
  21 }
  22
  23 add_bridge() {
  24         local cfg=$1
  25         local brname
  26
  27         config_get brname "$cfg" bridge "switch0"
  28
  29         case " $bridge_names " in
  30                 *" $brname "*) return 1 ;;
  31         esac
  32
  33         append bridge_names "$brname"
  34
  35         export -n "bridge=$brname"
  36 }
  37
  38 validate_vid() {
  39         local vid=$1
  40
  41         case "$vid" in
  42                 [1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-4][0-9][0-9][0-9])
  43                         if [ $vid -gt 4096 ]; then
  44                                 return 1
  45                         fi
  46                 ;;
  47                 *)
  48                         return 1
  49                 ;;
  50         esac
  51
  52         return 0
  53 }
  54
  55 setup_bridge() {
  56         local cfg=$1
  57         local bridge
  58
  59         add_bridge "$cfg" || return 0
  60
  61         # Prevent netifd from picking up our switch bridge just yet
  62         network_defer_device "$bridge"
  63
  64         # (Re)create switch bridge device in case it is not yet set up
  65         local filtering=$(cat "/sys/class/net/$bridge/bridge/vlan_filtering" 2>/dev/null)
  66         if [ ${filtering:-0} != 1 ]; then
  67                 ip link set "$bridge" down 2>/dev/null
  68                 ip link delete dev "$bridge" 2>/dev/null
  69                 ip link add name "$bridge" type bridge
  70                 echo 1 > "/sys/class/net/$bridge/bridge/vlan_filtering"
  71         fi
  72
  73         ip link set "$bridge" up
  74
  75         # Unbridge DSA ports and flush any VLAN filters on them, they're added back later
  76         local port
  77         for port in /sys/class/net/*"/upper_${cfg}"; do
  78                 if [ -e "$port" ]; then
  79                         port=${port%/upper_*}
  80                         port=${port##*/}
  81
  82                         ip link set "$port" nomaster
  83
  84                         # Unbridging the port should already clear VLANs, but be safe
  85                         clear_port_vlans "$port"
  86                 fi
  87         done
  88
  89         # Clear any VLANs on the switch bridge, they're added back later
  90         clear_port_vlans "$bridge" self
  91 }
  92
  93 setup_bridge_vlan() {
  94         local cfg=$1
  95         local bridge vlan ports
  96
  97         config_get bridge "$cfg" bridge "switch0"
  98         config_get vlan "$cfg" vlan
  99         config_get ports "$cfg" ports
 100
 101         validate_vid "$vlan" || {
 102                 warn "VLAN section '$cfg' specifies an invalid VLAN ID '$vlan'"
 103                 return 1
 104         }
 105
 106         # Setup ports
 107         local port tag pvid
 108         for port in $ports; do
 109                 tag=untagged
 110                 pvid=
 111
 112                 case "$port" in
 113                         *"*")
 114                                 pvid=pvid
 115                                 port=${port%\*}
 116                         ;;
 117                 esac
 118
 119                 case "$port" in
 120                         *:u)
 121                                 port=${port%:u}
 122                         ;;
 123                         *:t)
 124                                 tag=tagged
 125                                 port=${port%:t}
 126                         ;;
 127                 esac
 128
 129                 # Add the port to the switch bridge and delete the default
 130                 # VLAN 1 if it is not yet joined to the bridge.
 131                 if [ ! -e "/sys/class/net/$port/upper_$bridge" ]; then
 132                         ip link set dev "$port" up
 133                         ip link set dev "$port" master "$bridge"
 134
 135                         # Get rid of default VLAN 1
 136                         bridge vlan del vid 1 dev "$port"
 137                 fi
 138
 139                 # Promote the first untagged VLAN of this port to the PVID
 140                 if [ "$tag" = untagged ] && ! bridge vlan show dev "$port" | grep -qi pvid; then
 141                         pvid=pvid
 142                 fi
 143
 144                 # Add VLAN filter entry for port
 145                 bridge vlan add dev "$port" vid $vlan $pvid $tag
 146         done
 147
 148         # Make the switch bridge itself handle the VLAN as well
 149         bridge vlan add dev "$bridge" self vid $vlan tagged
 150 }
 151
 152 apply_config() {
 153         config_load network
 154         config_foreach setup_bridge vlan_filter
 155         config_foreach setup_bridge_vlan vlan_filter
 156
 157         # Ready switch bridge devices
 158         local bridge
 159         for bridge in $bridge_names; do
 160                 network_ready_device "$bridge"
 161         done
 162 }
 163
 164 show_bridge() {
 165         local cfg=$1
 166         local bridge
 167
 168         add_bridge "$cfg" || return 0
 169
 170         printf "Bridge: %s\n" "$bridge"
 171         printf "VLAN/"
 172
 173         local port ports
 174         for port in "/sys/class/net/$bridge/lower_"*; do
 175                 [ -e "$port" ] || continue
 176
 177                 port=${port##*/lower_}
 178
 179                 printf " | %-5s" "$port"
 180                 append ports "$port"
 181         done
 182
 183         printf " |\nLink:"
 184
 185         for port in $ports; do
 186                 local carrier=$(cat "/sys/class/net/$port/carrier")
 187                 local duplex=$(cat "/sys/class/net/$port/duplex")
 188                 local speed=$(cat "/sys/class/net/$port/speed")
 189
 190                 if [ ${carrier:-0} -eq 0 ]; then
 191                         printf " | %-5s" "down"
 192                 else
 193                         [ "$duplex" = "full" ] && duplex=F || duplex=H
 194                         printf " | %4d%s" "$speed" "$duplex"
 195                 fi
 196         done
 197
 198         local vlans=$(bridge vlan show dev "$bridge" | sed -ne 's#^[^ ]* \+\([0-9]\+\).*$#\1#p')
 199         local vlan
 200         for vlan in $vlans; do
 201                 printf " |\n%4d " "$vlan"
 202
 203                 for port in $ports; do
 204                         local pvid="" utag="" word
 205                         for word in $(bridge vlan show dev "$port" vid "$vlan"); do
 206                                 case "$word" in
 207                                         PVID) pvid="*" ;;
 208                                         "$vlan") utag="t" ;;
 209                                         Untagged) utag="u" ;;
 210                                 esac
 211                         done
 212
 213                         printf " |  %-2s  " "$utag$pvid"
 214                 done
 215         done
 216
 217         printf " |\n\n"
 218 }
 219
 220 show_config() {
 221         config_load network
 222         config_foreach show_bridge vlan_filter
 223 }
 224
 225
 226 case "$1" in
 227         show) show_config ;;
 228         apply) apply_config ;;
 229         *)
 230                 echo "Usage: ${0##*/} show"
 231                 echo "       ${0##*/} apply"
 232                 exit 1
 233         ;;
 234 esac