Hotplug official documentation missing for neigh and net

VxBox · September 1, 2021, 7:25am

The official Hotplug documentation only briefly introduces neigh and net, but unlike other directories that have detailed parameter descriptions and script examples. So how can we find neigh, net parameters and examples?

jow · September 1, 2021, 9:21am

The net event class is forwarding kernel uevents as-is. Parameters vary depending on interface type. You can find examples via the cli by inspecting cat /sys/class/net/eth0/uevent, cat /sys/class/net/br-lan/uevent etc. $ACTION will be either add or remove.

Parameters for the neigh, dhcp etc. classes can be seen at

github.com

openwrt/openwrt/blob/master/package/network/services/dnsmasq/files/dhcp-script.sh

#!/bin/sh

[ -f "$USER_DHCPSCRIPT" ] && . "$USER_DHCPSCRIPT" "$@"

. /usr/share/libubox/jshn.sh

json_init
json_add_array env
hotplugobj=""

case "$1" in
	add | del | old | arp-add | arp-del)
		json_add_string "" "MACADDR=$2"
		json_add_string "" "IPADDR=$3"
	;;
esac

case "$1" in
	add)
		json_add_string "" "ACTION=add"

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Also refer to https://openwrt.org/docs/guide-user/base-system/hotplug#usagetroubleshooting to dump the environment for received events.

VxBox · September 3, 2021, 7:03am

Tested according to the sample, there is no action, give up!