/network/if-down.d/ifupdown-scripts-zg2-95vlan
Shell | 134 lines | 86 code | 18 blank | 30 comment | 34 complexity | 7ea9d68ebb87e26a30ca23ce0dd43dcf MD5 | raw file
1#! /bin/sh 2# $Header$ 3 4# Environment: 5# IFACE = Logical interface name 6# MODE = { start | stop } 7# METHOD = manual, otherwise exit 8# ADDRFAM = inet, otherwise exit 9# IF_DEVICE = physical interface name (defaults to logical) 10# IF_MASTER = master interface (optional) 11# IF_MAC = mac of the master interface 12# IF_VLAN_ID = VLAN id 13 14. /etc/network/ifupdown-scripts-zg2.d/common-functions 15 16# remove state if interface is being stopped 17 18if [ "$MODE" = 'stop' ]; then 19 DEV=$(state_entry vlan-dev) 20 if [ -n "$DEV" ]; then 21 # we have a vlanned interface 22 if ! has_ip_address $DEV; then 23 exec_down "vlan" "vconfig" 24 IF_MASTER_DEV=$(state_entry vlan-master) 25 if ! is_active_vlan_master "$IF_MASTER_DEV" && ! has_ip_address "$IF_MASTER_DEV"; then 26 ip link set dev $IF_MASTER_DEV down 27 fi 28 fi 29 fi 30 exec_down "vlan" "" 31 exec_down "vlan-mac" "" 32 exec_down "vlan-master" "" 33 exec_down "vlan-id" "" 34 exec_down "vlan-dev" "" 35 exit 0 36fi 37 38[ "$MODE" = 'start' ] || exit 0 39 40# check if vlan needs to be configured 41[ "$IF_VLAN_ID" -ne 0 ] || exit 0 42 43# check if vlans are supported 44if [ "$VLAN_SUPPORT" != 'yes' ]; then 45 abort "No VLAN support in kernel" 46fi 47 48# check if encapsulation is correct 49 50verbose "encapsulation $IF_ENCAPSULATION" 51if [ "$IF_ENCAPSULATION" != "dot1q" ]; then 52 abort "invalid encapsulation $IF_ENCAPSULATION" 53fi 54 55# find master interface 56if [ -z "${IF_MASTER:-}" -a -z "${IF_MAC:-}" ]; then 57 abort "no master configured for VLAN interface $IFACE" 58fi 59 60if [ -n "$IF_MASTER" ]; then 61 # master by name 62 # resolve master to a physical device 63 IF_MASTER_DEV=$(dev_state_entry "$IF_MASTER" dev) 64 [ -z "${IF_MASTER_DEV:-}" ] && IF_MASTER_DEV="$IF_MASTER" 65 if ! if_exists "$IF_MASTER_DEV"; then 66 abort "master $IF_MASTER for VLAN interface $IFACE does not exist" 67 fi 68 IF_MAC=$(get_if_mac "$IF_MASTER_DEV") 69 if [ -z "${IF_MAC:-}" ]; then 70 abort "master $IF_MASTER for $IFACE is no ethernet device" 71 fi 72 IF_MASTER="$IF_MASTER_DEV" 73else 74 # master by mac 75 for iface in $(list_ifaces); do 76 if [ "$(get_if_mac "$iface")" = "$IF_MAC" ]; then 77 IF_MASTER="$iface" 78 break 79 fi 80 done 81 if [ -z "${IF_MASTER:-}" ]; then 82 abort "no master with MAC $IF_MAC found for $IFACE" 83 fi 84fi 85 86# IF_MASTER and IF_MAC are set and valid now 87 88# ensure that master is up 89if ! is_if_up "$IF_MASTER"; then 90 verbose "ip link set dev \"$IF_MASTER\" up" 91 ip link set dev "$IF_MASTER" up 92fi 93 94# check if VLAN already exists 95vlan=$(find_vlan "$IF_MASTER" $IF_VLAN_ID) 96verbose "find_vlan $IF_MASTER $IF_VLAN_ID = $vlan" 97if [ -n "$vlan" ]; then 98 # VLAN exists, check if it's the one we want 99 for iface in $(list_if_by_state dev "^$vlan[ \t]*\$"); do 100 verbose "test $iface" 101 if [ "$iface" != "$IFACE" -a "$vlan" != "$IF_DEVICE" ]; then 102 abort "device $IF_MASTER VLAN $IF_VLAN_ID already up as $vlan for $iface" 103 fi 104 done 105 # it's the one we want 106 newif="$vlan" 107else 108 # create new vlan 109 verbose "vconfig add \"$IF_MASTER\" $IF_VLAN_ID" 110 vconfig add "$IF_MASTER" $IF_VLAN_ID >/dev/null 111 newif=$(find_vlan "$IF_MASTER" $IF_VLAN_ID) 112 if [ -z "${newif:-}" ]; then 113 abort "could not add VLAN $IF_VLAN_ID on $IF_MASTER for $IFACE" 114 fi 115fi 116 117# newif is set to the VLAN interface 118 119# rename the interface if necessary 120if [ "$newif" != "$IF_DEVICE" ]; then 121 verbose "ip link set dev \"$newif\" down" 122 ip link set dev "$newif" down 123 verbose "ip link set dev \"$newif\" name \"$IF_DEVICE\"" 124 ip link set dev "$newif" name "$IF_DEVICE" 125fi 126 127add_down "vlan-id" "$IF_VLAN_ID" 128add_down "vlan-master" "$IF_MASTER" 129add_down "vlan-mac" "$IF_MAC" 130add_down "vlan-dev" "$IF_DEVICE" 131add_down "vlan" "rem \"$IF_DEVICE\" >/dev/null" 132 133# vi:sw=4 134# end of file