The relationship between GMAC0 and GMAC1 and the kernel devices
eth0 and eth1 was reversed for many ath79 devices by commit 8dde11d521
ath79: dts: drop "simple-mfd" for gmacs in SoC dtsi
The GL-AR300M-Lite is a single-port device, with the "LAN" port of the
GL-AR300M board unpopulated and its sole port now referenced as eth1,
as a result of commit 8dde11d521. The device was unreachable on
first boot or fresh config.
By changing ð1 (GMAC1) to an MFD, GMAC0 is able to associate with
the phy and is known by the kernel as "eth0".
Thanks to Chuanhong Guo for the suggestion of "simple-mfd"
Signed-off-by: Jeff Kletsky <git-commits@allycomm.com>
Jeff Kletsky [Sat, 28 Sep 2019 17:39:57 +0000 (10:39 -0700)]
ath79: Correct glinet, gl-ar300m-lite in 02_network
Previously, the board name for the GL-AR300M-Lite was incorrect
in 02_network, resulting in an unintended, fall-through condition
when initializing the network configuration.
While builds prior to commit 8dde11d521 (merged June 5, 2019)
ath79: dts: drop "simple-mfd" for gmacs in SoC dtsi
functioned properly, the error was noted in resolving first-boot
connectivity issues related to the single-phy nature of the device
and the "swap" of eth0 and eth1 related to that commit.
Signed-off-by: Jeff Kletsky <git-commits@allycomm.com>
treewide: fix hex2dec conversion for MAC address checksum offset
If chksum_offset is converted by $(($...)) at the beginning, the
check [ -n "$chksum_offset" ] will always return true, as the
conversion yields "0" for an empty argument, and [ -n "0" ] is
true.
With this patch, the variable is not converted before the check,
but only when it's used in dd.
No conversion is done for use in hexdump, as this can deal with
hex value offsets.
Fixes: b133e466b08e ("treewide: convert WiFi caldata size and offset to hexadecimal") Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
treewide: replace backticks by $(...) in gen_*_img.sh scripts
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
lantiq: replace backticks by $(...) and remove useless echo
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This replaces deprecated backticks by more versatile $(...) syntax.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
[decapitalized patch subject at submitter's request] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
The following symbols, selected by the qce driver were removed:
CONFIG_CRYPTO_CBC
CONFIG_CRYPTO_CTR
CONFIG_CRYPTO_DES
CONFIG_CRYPTO_DEV_QCE
CONFIG_CRYPTO_ECB
CONFIG_CRYPTO_NULL
CONFIG_CRYPTO_SEQIV
CONFIG_CRYPTO_XTS
CONFIG_CRYPTO_GF128MUL was removed as well, since it is only needed by
some cipher modes (LRW, GCM), none of which are selected, and it is
packaged as a module.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
define conversion constants for ancient kernels
android: refactor and add incoming allow rules
enforce that unused bits of flags are zero
immediately rekey all peers after changing device private key
support running in OpenVZ environments
do not run bc on clean target
skip peers with invalid keys
account for upstream configuration maze changes
openbsd: fix alternate routing table syntax
account for android-4.9 backport of addr_gen_mode
don't fail down when using systemd-resolved
allow specifying kernel release
enforce named pipe ownership and use protected prefix
work around ubuntu breakage
support newer PaX
don't rewrite siphash when it's from compat
squelch warnings for stack limit on broken kernel configs
support rhel/centos 7.7
$(board_name) was providing content on "boardtype" (and optionally
"boardnum") NVRAM values. That function requires & expects more specific
and detailed model name extracted from the /proc/cpuinfo.
Fixes: f12a32630ff5 ("treewide: use the generic board_name function") Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
David Bauer [Tue, 24 Sep 2019 23:52:14 +0000 (01:52 +0200)]
uboot-fritz4040: update to 2019-09-07
572ff7f fritzcreator: actually add checksum spacer 6edce1a fritzcreator: replace obscure padding generation with something more portable 2ff189f add ASUS RT-AC58U "easy install" factory u-boot shim b91f9c2 readd spi-nand support 486ae53 improve cmd_sysupgrade b0933f1 replace sstrip with strip 882e48a do not include generated files into git 0c5aa5f fix bugs in ipq40xx_cdp.c
David Bauer [Sun, 22 Sep 2019 17:15:56 +0000 (19:15 +0200)]
ipq40xx: abort ar40xx probe on missing PHYs
The ar40xx driver currently panics in case no QCA807x PHY has been
successfully probed. This happens when the external PHY is still
in reset when probing the ar40xx switch driver.
Note that this patch does not fix the root cause, ar40xx_probe now
simply fails instead of causing a kernel panic due to a nullpointer
dereference.
Felix Fietkau [Wed, 25 Sep 2019 17:39:51 +0000 (19:39 +0200)]
kernel: fix issues with output routing in flow offload
Replace an old cleanup patch that never made it upstream with the proper
upstream fix. This patch was incompatible with the recent changes that
affected the way that the flow tuple dst entry was used.
leo chung [Fri, 20 Sep 2019 05:33:58 +0000 (13:33 +0800)]
build: fix xconfig target
`make xconfig` fails with following linking error of qconf binary:
g++ -lQt5Widgets -lQt5Gui -lQt5Core -o qconf qconf.o zconf.tab.o
/usr/bin/ld: qconf.o: in function ConfigList::metaObject() const': qconf.cc:(.text+0x3eb): undefined reference to QObjectData::dynamicMetaObject() const'
/usr/bin/ld: qconf.o: in function `ConfigList::qt_metacast(char const*)': link error.
which is caused by the wrong order of the linked objects/libraries so
this patch reorders the linker's arguments which makes the qconf compile
again.
Signed-off-by: leo chung <gewalalb@gmail.com>
[commit subject and message tweaks, whitespace fix] Signed-off-by: Petr Štetiar <ynezz@true.cz>
Petr Štetiar [Fri, 20 Sep 2019 12:54:56 +0000 (14:54 +0200)]
build: fix host menu config targets using ncurses
On a recent Gentoo Linux installation, invoking `make menuconfig`, `make
kernel_menuconfig` or `make kernel_nconfig` in the build system fails,
whereas for example `make menuconfig` in the kernel tree alone works as
expected.
This is happening because STAGING_PREFIX is not defined when kernel's
{menu,n}config target calls pkg-config from the toolchain/host and thus
pkg-config returns an empty value, and the fallback values in the kernel
config script are applied but those are off and the linking fails.
Solution is to use system's pkg-config for all ncurses based menu config
targets in order to provide proper compiler/linker flags.
Ref: FS#2423 Cc: Thomas Albers <thomas.gameiro@gmail.com> Tested-by: Stijn Tintel <stijn@linux-ipv6.be> Tested-by: Eneas U de Queiroz <cotequeiroz@gmail.com> Signed-off-by: Petr Štetiar <ynezz@true.cz>
INAGAKI Hiroshi [Mon, 19 Aug 2019 12:38:24 +0000 (21:38 +0900)]
ramips: move "elx-header" to Makefile from mt7620.mk and mt7621.mk
I-O DATA WNPR2600G has an "elx-header", so move this definition to
generic makefile to use it from mt7621 subtarget.
This definition is also added to mt7621.mk in f285e8634c57d28aa970b80c5c59e85485f35c7d, so remove it from mt7621.mk.
Installation via web interface:
1. Flash **initramfs** image through the stock web interface.
2. Boot into OpenWrt and perform sysupgrade with sysupgrade image.
Revert to stock firmware:
1. Perform sysupgrade with stock image.
Hardware:
SoC: MT7621A
Flash: 32 MiB
RAM: 512 MiB
Ethernet: built-in switch
USB: 1x USB3.0
SATA: ASM1060, 1 SATA port
Flash instruction (TFTP):
1. Set PC to fixed ip address 192.168.173.22
2. Download *-sysupgrade.bin image and rename it to firmware.img
3. Start a tftp server with the image file in its root directory
4. Turn off the router
5. Turn on router,press the reset button and wait ~15 seconds
6. Release the reset button and after a short time
the firmware should be transferred from the tftp server
7. Wait ~3 minutes to complete recovery.
Hauke Mehrtens [Sat, 4 May 2019 12:02:07 +0000 (14:02 +0200)]
hostapd: use getrandom syscall
hostapd will not use the getrandom() syscall and as a fallback use
/dev/random, the syscall is supported since Linux 3.17 and in the musl,
glibc and uclibc version used by OpenWrt.
Hauke Mehrtens [Fri, 3 May 2019 23:52:25 +0000 (01:52 +0200)]
hostapd: Update to version 2.8 (2019-04-21)
This also syncs the configuration files with the default configuration
files, but no extra options are activated or deactivated.
The mesh patches were partially merged into hostapd 2.8, the remaining
patches were extracted from patchwork and are now applied by OpenWrt.
The patches still have open questions which are not fixed by the author.
They were taken from this page:
https://patchwork.ozlabs.org/project/hostap/list/?series=62725&state=*
The changes in 007-mesh-apply-channel-attributes-before-running-Mesh.patch
where first applied to hostapd, but later reverted in hostapd commit 3e949655ccc5 because they caused memory leaks.
The size of the ipkgs increase a bit (between 1.3% and 2.3%):
Russell Senior [Sat, 21 Sep 2019 08:58:07 +0000 (01:58 -0700)]
apm821xx: remove unnecessary kernel padding
The allocation of LEBs to ubi volumes is handled by the sysupgrade script:
package/base-files/files/lib/upgrade/nand.sh
and the ubimkvol and or ubirsvol command. Therefore, padding of the
kernel blob is not needed at all, so use cat instead of dd. The
BLOCKSIZE variable was only used in the dd command. In any case, 63k
made no sense for the way BLOCKSIZE was being used.
63k (64512) does make sense for DTB_SIZE because of the offsets expected
by u-boot given extant u-boot-env variables.
Tested on Meraki MR24.
Signed-off-by: Russell Senior <russell@personaltelco.net>
This adds the CRYPTO_ALG_KERN_DRIVER_ONLY flag to Qualcomm crypto engine
driver algorithms, so that openssl devcrypto can recognize them as
hardware-accelerated.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
[refresh, move to ipq40xx as its the only target right now] Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
ath79: remove invalid uses of ath9k_patch_fw_mac_crc
Some ar9344-based devices are using ath9k_patch_fw_mac_crc, which
is meant to generate a checksum, for fixing their ath9k MAC
addresses.
However, those do not have a checksum field, and the calculated
checksum offset would be negative.
This patch will use ath9k_patch_fw_mac function for those devices.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
ath79: image: pad kernel for Adtran/Bluesocket devices
It has been reported that using the sysupgrade-tar image will trigger
"lzma_decode failed error". The RedBoot bootloader always loads data
from flash till block size boundary, so if there's no padding it'll also
load the beginning of rootfs, and it seems that lzma_decoder can't handle
that garbage data. Previously the script creating combined-image
silently padded the kernel and rootfs, but since sysupgrade-tar doesn't,
pad the default kernel image.
Fixes: 900330f ("ath79: image: retire combined-image for Adtran/Bluesocket
devices") Cc: Brian Gonyer <bgonyer@gmail.com> Cc: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us> Signed-off-by: Tomasz Maciej Nowak <tomek_n@o2.pl>
build: set TARGET_ROOTFS_PARTSIZE to make combined image fit in 128MB
Change TARGET_ROOTFS_PARTSIZE from 128 to 104 MiB, so the whole image
(bootloader + boot + root) will fit on a 128MB CF card by default.
With these settings, the generated images (tested on x86-generic and
x86-64) have 126,353,408 bytes; the smallest CF card marketed as "128MB"
that I found a datasheet for (a Transcend TS128MCF80) has 126,959,616
bytes.
rootfs.mk: ensure all timestamp are set to SOURCE_DATE_EPOCH
Some tools doesn't support SOURCE_DATE_EPOCH (e.g. initramfs images).
Ensure all files of a root filesystem are set to SOURCE_DATE_EPOCH.
Make initramfs builds reproducible (for ramips).
4327ed4 mkdev: Avoid out of bounds read 9b3eb63 libblkid-tiny: use blkid_probe_set_utf8label for label set c9d0462 libblkid-tiny: adds blkid_probe_set_utf8label support
wolfssl: allow building with hw-crytpo and AES-CCM
Hardware acceleration was disabled when AES-CCM was selected as a
workaround for a build failure. This applies a couple of upstream
patches fixing this.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This patch was originally added to fix compilation with v4l2rtspserver.
Turns out it was v4l2rtspserver that was broken, not uClibc++. This now
causes issues with a different package where the arguments are being
split.
Note that with this patch, shellcheck throws an error:
SC2068: Double quote array expansions to avoid re-splitting elements.
02112f9 cli: fix reporting of mixed WPA2/WPA3 versions 7faeaea nl80211: properly detect WEP encryption in wpa_supp scan results 629b5ff nl80211: do not confuse open connections with WEP ones 3d47ddd nl80211: rework hostapd and wpa_supplicant wpa suite parsing
hostapd: mirror ieee80211w ap mode defaults in station mode
For AP mode, OpenWrt automatically sets ieee80211w to either 1 or 2, depending
on whether the encryption is set to sae-mixed, or sae/owe/eap suite-b.
Mirror the same defaults for client mode connections, in order to allow an
OpenWrt station to associate to an OpenWrt ap with SAE, OWE or Suite-B encryption
without the need to manually specify "option ieee80211w" on the station.
This changes fixes the generation of the wpa_supplicant client configuration
in WPA3 OWE client mode. Instead of incorrectly emitting key_mgmt=NONE, use
the proper key_mgmt=OWE setting instead.
Use the OEM web interface to install the ...-factory.dlf image.
Use the OpenWRT ...-sysupgrade.bin image for future upgrades.
The J2 serial port can be accessed either by soldering in a header,
standard 0.1" spacing, or by using pogo-pins against the back side.
As configured by the OEM, the U-Boot boot delay is short, however quickly
typing "1" leads to the U-Boot "System load Linux to SDRAM via TFTP"
prompt. The TFTP client is configured by default with
client: 192.168.99.9
server: 192.168.99.8
filename: uImageESR600
It will load an OpenWRT initramfs kernel with this method.
Known issues:
1) Only the ports externally labeled WAN, LAN3 and LAN4 are operational.
LAN1 and LAN2 do not appear to power up. This issue is also present
in the Lava LR25G001.
2) The amber WPS-2.4G LED, in the same lightguide as the blue WPS-5G LED,
is not configured in the Device Tree specification.
3) The blue WAN activity LED is not configured in the Device Tree
specification as this causes the AR8327 switch to fail to initialize.
Signed-off-by: Nick Briggs <nicholas.h.briggs@gmail.com>
[merge conflict in 02_network] Signed-off-by: Petr Štetiar <ynezz@true.cz>
SoC: Mediatek MT7621A
CPU: 4x 880Mhz
Cache: 32 KB I-Cache and 32 KB D-Cach
256 KB L2 Cache (shared by Dual-Core)
RAM: DDR3 512MB 16bits BUS
FLASH: 16MB
Switch: Mediatek Gigabit Switch (2 x LAN, 1 x WAN)
POE: (1x PD, 2x PSE)
USB: 1x 3.0
PCI: 3x Mini PCIe (3 USB2.0 + 2 x UIM interface)
GPS: Quectel L70B
SIM: 2 Slots
BTN: Reset
LED: - Power
- Ethernet
- Wifi
- USB
UART: UART is present as Pads with throughholes on the PCB.
They are located on left side.
3.3V - RX - GND - TX / 57600-8N1
3.3V is the square pad
Installation
------------
The stock image is a modified openwrt and can be overflashed via sysupgrade -F
Signed-off-by: Daniel Danzberger <daniel@dd-wrt.com>
[merge conflict in mt7621.mk] Signed-off-by: Petr Štetiar <ynezz@true.cz>
SoC: MediaTek MT7621AT dual-core @ 880MHz
RAM: 256M (Winbond W632GG6KB-1)
FLASH: 128MB (Macronix MX30LF1G18AC-TI)
WiFi: - 2.4GHz MediaTek MT7615N bgn
- 5GHz MediaTek MT7615N nac
Switch: SoC integrated Gigabit Switch (4 x LAN, 1 x WAN)
USB: 1 x USB 3.1 (Gen 1)
BTN: Reset, WPS
LED: - Power (blue)
- 5Ghz (blue)
- 2.4GHz (blue)
- Internet (blue)
- 4x LAN (blue)
(LAN/WAN leds are not controllable by GPIOs)
UART: UART is present as Pads marked J4 on the PCB.
3.3V - TX - RX - GND / 57600-8N1
3.3V is the square pad
MAC: The MAC address on the router-label matches the MAC of
the 2.4 GHz WiFi.
LAN and WAN MAC are identical: MAC_LABEL+4
5 GHz WiFi MAC: also MAC_LABEL+4
Installation
------------
Via U-Boot tftpd:
Switch on device, within 2s press reset button and keep pressed
until power LED starts blinking slowly.
Upload factory image via tftp put, the router's ip is 192.168.1.1
and expects the client on 192.168.1.75.
The images also work on the Asus RT-AC65P models as tested by Gabor.
Signed-off-by: Birger Koblitz <mail@birger-koblitz.de> Tested-by: Gabor Varga <vargagab@gmail.com>
[fixed Asus -> ASUS in DTS] Signed-off-by: Petr Štetiar <ynezz@true.cz>
SoC: MediaTek MT7621AT dual-core @ 880MHz
RAM: 256M (Nanya NT5CC128M)
FLASH: 16MB (Macronix MX25L12835F)
WiFi: - 2.4GHz MediaTek MT7615N bgn
- 5GHz MediaTek MT7615N nac
Switch: SoC integrated Gigabit Switch (4 x LAN, 1 x WAN)
USB: No
BTN: Reset, WPS
LED: 4 red LEDs, indistinguishable when casing closed
UART: UART is present as Pads marked J1 on the PCB.
3.3V - RX - GND - TX / 57600-8N1
3.3V is the square pad
Installation
------------
Update the factory image via the OEM web-interface
(by default:http://192.168.1.1)
The sysupgrade image can be installed via TFTP from
the U-Boot bootloader. Connect ethernet port 2.
Signed-off-by: Birger Koblitz <mail@birger-koblitz.de>
[flash node rename, EDIMAX -> Edimax, complete device model name] Signed-off-by: Petr Štetiar <ynezz@true.cz>
Johann Neuhauser [Mon, 16 Sep 2019 09:42:49 +0000 (11:42 +0200)]
build: make device tree arg really optional in mkits.sh
If no device tree is given there is no node generated, but
the configuration does still include the name of the missing node.
This will result in a successful build fit image, but bootm does
throw a error message if we want to boot the bad configuration.
Signed-off-by: Johann Neuhauser <jneuhauser@dh-electronics.com>
Leon M. George [Wed, 11 Sep 2019 13:22:55 +0000 (15:22 +0200)]
hostapd: declare struct wpa_bss early
wps_supplicant.h assumes that 'struct wpa_bss' is forward declared if
CONFIG_WPS is not defined. With the later inclusion of
600-ubus_support, the issue manifests in warnings like these:
wps_supplicant.h:113:15: warning: 'struct wpa_bss' declared inside parameter list will not be visible outside of this definition or declaration
struct wpa_bss *bss)
^~~~~~~
This patch forward declares 'struct wpa_bss' regardless.
Signed-off-by: Leon M. George <leon@georgemail.eu>
[commit message facelift] Signed-off-by: Petr Štetiar <ynezz@true.cz>
Leon M. George [Wed, 11 Sep 2019 12:10:18 +0000 (14:10 +0200)]
hostapd: revert signature change in patch
The original wpa_hexdump uses a 'void *' for the payload. With patch
410-limit_debug_messages, the signature changes and compiler warnings
occur at various places. One such warning is:
wpa_debug.h:106:20: note: expected 'const u8 * {aka const unsigned char *}' but argument is of type 'struct wpa_eapol_key *'
Signed-off-by: Leon M. George <leon@georgemail.eu>
[commit message facelift] Signed-off-by: Petr Štetiar <ynezz@true.cz>
ath79: add SUPPORTED_DEVICES to ubnt_nanostation-m-xw
The ar71xx images for the Ubiquiti NanoStation M (XW) devices use
"nanostation-m-xw" as the board name, but the ath79 images are only
compatible with the "nano-m-xw" board name, so sysupgrade complains.
By adding this additional supported device, sysuspgrade smoothly
upgrades from ar71xx to ath79.
Tested on a NanoStation M (XW) running OpenWrt ar71xx r10250-016d1eb.
Ref: https://github.com/openwrt/openwrt/pull/2418 Signed-off-by: Roger Pueyo Centelles <roger.pueyo@guifi.net>
[removed duplicate DEVICE_VARIANT, removed uneeded nano-m-xw support] Signed-off-by: Petr Štetiar <ynezz@true.cz>
This patch adds the label MAC address for several devices in
ramips.
Some devices require setting the MAC address in 02_network:
For the following devices, the netif device can be linked in
device tree, but the MAC address cannot be read:
- cudy,wr1000
- dlink,dir-615-d
- dlink,dir-615-h1
- dlink,dir-860l-b1
- glinet,gl-mt300a
- glinet,gl-mt300n
- glinet,gl-mt750
- vocore,vocore2
- vocore,vocore2-lite
- zbtlink,zbt-we1326
- zbtlink,zbt-wg3526
For the following devices, label MAC address is tied to lan or
wan, so no node to link to exists in device tree:
- dlink,dir-510l
- dlink,dwr-116-a1
- dlink,dwr-118-a1
- dlink,dwr-118-a2
- dlink,dwr-921-c1
- dlink,dwr-922-e2
- all hiwifi devices
- lava,lr-25g001
- xiaomi,mir3p
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
This patch adds the label MAC address for several devices in
ath79.
Some devices require setting the MAC address in 02_network:
For the following devices, the netif device can be linked in
device tree, but the MAC address cannot be read:
- alfa-network,ap121f
- avm,fritz300e
- ubnt-xm devices
For the following devices, label MAC address is tied to lan or
wan, so no node to link to exists in device tree:
- adtran,bsap1800-v2
- adtran,bsap1840
- dlink,dir-842-c1/-c2/-c3
- engenius,ecb1750
- iodata,etg3-r
- iodata,wn-ac1167dgr
- iodata,wn-ac1600dgr
- iodata,wn-ac1600dgr2
- iodata,wn-ag300dgr
- nec,wg800hp
- nec,wg1200cr
- trendnet,tew-823dru
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
base-files: provide option to specify label MAC address in board.d
For many devices, MAC addresses cannot be retrieved via the
device tree alias.
To still provide the label MAC address for those, this implements
a second mechanism that will put the address into uci config.
Note that this stores the actual MAC address, whereas in DTS
we reference the bearing device.
This is based on the work of Rosy Song <rosysong@rosinson.com>
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
base-files: add function to retrieve label MAC address
To refer to the MAC address on a device's label, one can
specify the alias label-mac-device in the DTS which should
point to the bearer of the corresponding MAC address.
With the function get_mac_label, the user can retrieve then
retrieve this address and use it as a value that uniquely
identifies his device.
This is severely helpful for several downstream functionalities,
e.g. define MAC addresses of custom netifs or change the SSID to
be easily recognizable.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>