diff options
Diffstat (limited to 'net-scripts/net/vlan.sh')
| -rw-r--r-- | net-scripts/net/vlan.sh | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/net-scripts/net/vlan.sh b/net-scripts/net/vlan.sh new file mode 100644 index 0000000..f6c1e26 --- /dev/null +++ b/net-scripts/net/vlan.sh @@ -0,0 +1,159 @@ +# Copyright (c) 2004-2006 Gentoo Foundation +# Distributed under the terms of the GNU General Public License v2 +# Contributed by Roy Marples (uberlord@gentoo.org) + +# Fix any potential localisation problems +# Note that LC_ALL trumps LC_anything_else according to locale(7) +vconfig() { + LC_ALL=C /sbin/vconfig "$@" +} + +# void vlan_depend(void) +# +# Sets up the dependancies for the module +vlan_depend() { + after interface + before dhcp + functions iface_start iface_stop +} + +# void vlan_expose(void) +# +# Expose variables that can be configured +vlan_expose() { + variables vlans +} + +# bool vlan_check_installed(void) +# +# Returns 0 if vconfig is installed, otherwise 1 +vlan_check_installed() { + [[ -x /sbin/vconfig ]] && return 0 + ${1:-false} && eerror "For VLAN (802.1q) support, emerge net-misc/vconfig" + return 1 +} + +# bool vlan_exists(char *interface) +# +# Returns 0 if the interface is a vlan, otherwise 1 +vlan_exists() { + [[ ! -d /proc/net/vlan ]] && return 1 + egrep -q "^$1[[:space:]]+" /proc/net/vlan/config +} + +# char* vlan_get_vlans(char *interface) +# +# Fetch the configured vlans for an interface. Outputs a space +# separated list on stdout. For example "eth0.1 eth0.2 eth0.3" +vlan_get_vlans() { + sed -n -e 's/^\(.*[0-9]\) \(.* \) .*'"$1"'$/\1/p' \ + /proc/net/vlan/config 2>/dev/null +} + +# bool vlan_check_kernel(void) +# +# Checks to see if the 802.1q module is present - if not try and load it +# Returns 1 if there is a problem +vlan_check_kernel() { + [[ -d /proc/net/vlan ]] && return 0 + /sbin/modprobe 8021q &>/dev/null + [[ -d /proc/net/vlan ]] && return 0 + eerror "VLAN (802.1q) support is not present in this kernel" + return 1 +} + +#bool vlan_pre_start(char *iface) +# +# Setup vconfig +vlan_pre_start() { + local iface="$1" opts i x e ifvar="$(bash_variable "$1")" + + opts="vconfig_${ifvar}[@]" + [[ -z ${!opts} ]] && return 0 + opts=( "${!opts}" ) + + vlan_check_kernel || return 1 + interface_exists "${iface}" || return 1 + + for (( i=0; i<${#opts[@]}; i++ )) ; do + if [[ ${opts[i]} == "set_name_type "* ]]; then + x="${opts[i]}" + else + x="${opts[i]/ / ${iface} }" + [[ ${x} == "${opts[i]}" ]] && x="${x} ${iface}" + fi + e="$(vconfig ${x} 2>&1 1>/dev/null)" + [[ -z ${e} ]] && continue + eerror "vconfig ${x}" + eerror "${e}" + return 1 + done + + return 0 +} + +# bool vlan_post_start(char *iface) +# +# Starts VLANs for a given interface +# +# Always returns 0 (true) +vlan_post_start() { + local iface="$1" vlan vlans vlans_old ifname ifvar="$(bash_variable "$1")" + vlans="vlans_${ifvar}[@]" + local start="vlan_start_${ifvar}" + + # BACKWARD COMPATIBILITY: check for old vlan variable name + vlans_old="iface_${ifvar}_vlans" + [[ -n ${!vlans_old} && -z ${!vlans} ]] && vlans="vlans_old" + + [[ -z ${!vlans} ]] && return 0 + + vlan_check_kernel || return 1 + interface_exists "${iface}" true || return 1 + + # Start vlans for this interface + for vlan in ${!vlans} ; do + einfo "Adding VLAN ${vlan} to ${iface}" + e="$(vconfig add "${iface}" "${vlan}" 2>&1 1>/dev/null)" + if [[ -n ${e} ]] ; then + eend 1 "${e}" + continue + fi + eend 0 + + # We may not want to start the vlan ourselves, but + # as a seperate init script. This allows the vlan to be + # renamed if needed. + [[ -n ${!start} && ${!start} != "yes" ]] && continue + + # We need to work out the interface name of our new vlan id + ifname="$( \ + sed -n -e 's/^\([^ \t]*\) *| '"${vlan}"' *| .*'"${iface}"'$/\1/p' \ + /proc/net/vlan/config + )" + iface_start "${ifname}" + done + + return 0 +} + +# bool vlan_stop(char *iface) +# +# Stops VLANs for a given interface +# +# Always returns 0 (true) +vlan_stop() { + local iface="$1" vlan + + vlan_check_installed || return 0 + + for vlan in $(vlan_get_vlans "${iface}"); do + einfo "Removing VLAN ${vlan##*.} from ${iface}" + iface_stop "${vlan}" + vconfig rem "${vlan}" >/dev/null + done + + return 0 +} + +# vim: set ts=4 : |