base-files: config_generate: support autogenerating vlans

Add support for generating vlans solely from the port layout description
given through ucidef_add_switch_ports().

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@47639 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/files/bin/config_generate b/package/base-files/files/bin/config_generate
index 0c8df16..40d7047 100755 (executable)
--- a/package/base-files/files/bin/config_generate
+++ b/package/base-files/files/bin/config_generate
@@ -31,7 +31,7 @@ generate_network() {
        json_select ..
 
        [ -n "$ifname" ] || return
-       [ "$create_vlan" -eq 1 ] && case $1 in
+       [ "${create_vlan:-0}" -eq 1 ] && case $1 in
        lan) vlan=1;;
        wan) vlan=2;;
        *)
@@ -94,6 +94,116 @@ set network.@switch_vlan[-1].ports='$ports ${cpu_port}t'
 EOF
 }
 
+calculate_switch_vlans() {
+       local switch=$1
+       local ports port
+       local prev_role
+       local num device role index
+       local n_cpu=0 cpu0 cpu1 cpu2 cpu3
+       local dev0 dev1 dev2 dev3 role0 role1 role2 role3
+       local n_vlan=0 vlan_off=-1
+       local vlan_ports cpu_port
+
+       json_get_keys ports ports
+
+       json_select ports
+
+       # gather all cpu ports and count vlans
+       for port in $ports; do
+               json_select "$port"
+               json_get_vars num device role
+
+               if [ -n "$num" ] && [ -n "$device" ]; then
+                       export "cpu$n_cpu=$num"
+                       export "dev$n_cpu=$device"
+                       n_cpu=$((n_cpu + 1))
+               elif [ -n "$num" ] && [ -n "$role" ] && [ "$role" != "$prev_role" ]; then
+                       export "role$n_vlan=$role"
+                       n_vlan=$((n_vlan + 1))
+                       prev_role="$role"
+               fi
+
+               json_select ..
+       done
+
+       unset prev_role
+
+       # autogenerate vlans
+       for port in $ports ""; do
+               json_select "$port"
+
+               if [ -n "$port" ]; then
+                       json_get_vars num device role
+               else
+                       num="-"; role="-"
+               fi
+
+               if [ -n "$num" ] && [ -n "$role" ]; then
+                       if [ "$role" != "$prev_role" ]; then
+                               if [ -n "$vlan_ports" ]; then
+                                       let cpu_port="cpu$((vlan_off % n_cpu))"
+                                       [ $n_vlan -gt $n_cpu ] && cpu_port="${cpu_port}t"
+
+                                       uci -q batch <<-EOF
+                                               add network switch_vlan
+                                               set network.@switch_vlan[-1].device='$switch'
+                                               set network.@switch_vlan[-1].vlan='$((vlan_off + 1))'
+                                               set network.@switch_vlan[-1].ports='$vlan_ports $cpu_port'
+                                       EOF
+                               fi
+
+                               vlan_off=$((vlan_off + 1))
+                               vlan_ports="$num"
+                               prev_role="$role"
+                       else
+                               vlan_ports="$vlan_ports $num"
+                       fi
+
+               fi
+
+               json_select ..
+       done
+
+       json_select ..
+
+       # autogenerate interfaces
+       vlan_off=0; while [ $vlan_off -lt $n_vlan ]; do
+               eval role="\$role$((vlan_off))"
+               eval device="\$dev$((vlan_off++ % n_cpu))"
+               [ $n_vlan -gt $n_cpu ] && device="$device.$vlan_off"
+
+               uci -q batch <<-EOF
+                       delete network.$role
+                       set network.$role='interface'
+                       set network.$role.ifname='$device'
+               EOF
+
+               case $role in
+                       lan) uci -q batch <<-EOF
+                               set network.lan.type='bridge'
+                               set network.lan.proto='static'
+                               set network.lan.ipaddr='192.168.1.1'
+                               set network.lan.netmask='255.255.255.0'
+                               set network.lan.ip6assign='60'
+                       EOF
+                       ;;
+                       wan) uci -q batch <<-EOF
+                               set network.wan.proto='dhcp'
+                               delete network.wan6
+                               set network.wan6='interface'
+                               set network.wan6.ifname='$device'
+                               set network.wan6.proto='dhcpv6'
+                       EOF
+                       ;;
+                       *) uci -q batch <<-EOF
+                               set network.$role.force_link='1'
+                               set network.$role.proto='none'
+                       EOF
+                       ;;
+               esac
+       done
+}
+
 generate_switch() {
        local key=$1
        local vlans
@@ -109,10 +219,14 @@ set network.@switch[-1].reset='$reset'
 set network.@switch[-1].enable_vlan='$enable'
 set network.@switch[-1].blinkrate='$blinkrate'
 EOF
-       [ -n "$cpu_port" ] && {
+
+       if [ -n "$cpu_port" ]; then
                json_get_keys vlans vlans
                for vlan in $vlans; do generate_switch_vlan $1 $vlan $cpu_port; done
-       }
+       elif json_is_a ports array; then
+               calculate_switch_vlans $1
+       fi
+
        json_select ..
        json_select ..
 }