openwrtv4/target/linux/mpc85xx/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate
Matthias Schiffer b452af23a8
mpc85xx: add migration script for TP-Link TL-WDR4900 v1 WLAN PCI paths
PCI paths of the WLAN devices have changed between kernel 4.4 and 4.9;
migrate config so existing wifi-iface definitions don't break.

This is implemented as a hotplug handler rather than a uci-defaults script
as the migration script must run before the 10-wifi-detect hotplug handler.

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
2018-09-04 21:27:27 +02:00

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#!/bin/sh
# This must run before 10-wifi-detect
[ "${ACTION}" = "add" ] || return
. /lib/functions.sh
check_radio()
{
local cfg="$1" to="$2"
config_get path "$cfg" path
[ "$path" = "$to" ] && PATH_EXISTS=true
}
do_migrate_radio()
{
local cfg="$1" from="$2" to="$3"
config_get path "$cfg" path
[ "$path" = "$from" ] || return
uci set "wireless.${cfg}.path=${to}"
WIRELESS_CHANGED=true
logger -t wifi-migrate "Updated path of wireless.${cfg} from '${from}' to '${to}'"
}
migrate_radio()
{
local from="$1" to="$2"
config_load wireless
# Check if there is already a section with the target path: In this case, the system
# was already upgraded to a version without this migration script before; better bail out,
# as we can't be sure we don't break more than we fix.
PATH_EXISTS=false
config_foreach check_radio wifi-device "$to"
$PATH_EXISTS && return
config_foreach do_migrate_radio wifi-device "$from" "$to"
}
WIRELESS_CHANGED=false
case "$(board_name)" in
tplink,tl-wdr4900-v1)
migrate_radio 'ffe09000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0' 'ffe09000.pcie/pci9000:00/9000:00:00.0/9000:01:00.0'
migrate_radio 'ffe0a000.pcie/pci0001:02/0001:02:00.0/0001:03:00.0' 'ffe0a000.pcie/pcia000:02/a000:02:00.0/a000:03:00.0'
;;
esac
$WIRELESS_CHANGED && uci commit wireless
exit 0