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dnsmasq: add match_tag for --dhcp-host 

A set of tags can be specified for --dhcp-host option to restrict the
assignment to the requests which match all the tags.

Example usage:

config vendorclass
        option networkid 'udhcp'
        option vendorclass 'udhcp'

config host
        option mac '*:*:*:*:*:*'
        list match_tag 'switch.10'
        list match_tag 'udhcp'
        option ip '192.168.25.10'

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
This commit is contained in:
Paul Fertser 2021-09-23 10:28:45 +03:00 committed by Kevin Darbyshire-Bryant
parent a667f6b8dd
commit 8a6b1a8d29
1 changed files with 8 additions and 3 deletions
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11
package/network/services/dnsmasq/files/dnsmasq.init Normal file → Executable file
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@ -332,7 +332,7 @@ dhcp_match_add() {
dhcp_host_add() {
local cfg="$1"
local hosttag nametime addrs duids macs tags
local hosttag nametime addrs duids macs tags mtags
config_get_bool force "$cfg" force 0
@ -357,6 +357,11 @@ dhcp_host_add() {
config_get duid "$cfg" duid
config_get tag "$cfg" tag
add_tag() {
mtags="${mtags}tag:$1,"
}
config_list_foreach "$cfg" match_tag add_tag
if [ -n "$mac" ]; then
# --dhcp-host=00:20:e0:3b:13:af,192.168.0.199,lap
# many MAC are possible to track a laptop ON/OFF dock
@ -394,9 +399,9 @@ dhcp_host_add() {
if [ $DNSMASQ_DHCP_VER -eq 6 ]; then
addrs="${ip:+,$ip}${hostid:+,[::$hostid]}"
xappend "--dhcp-host=$macs${duids:+,$duids}$hosttag$addrs$nametime"
xappend "--dhcp-host=$mtags$macs${duids:+,$duids}$hosttag$addrs$nametime"
else
xappend "--dhcp-host=$macs$hosttag${ip:+,$ip}$nametime"
xappend "--dhcp-host=$mtags$macs$hosttag${ip:+,$ip}$nametime"
fi
}