Hello Christian, > -----Original Message----- > From: openwrt-devel [mailto:openwrt-devel-boun...@lists.openwrt.org] > On Behalf Of Christian Lamparter > Sent: Samstag, 28. September 2019 18:37 > To: openwrt-devel@lists.openwrt.org > Cc: Adrian Schmutzler <freif...@adrianschmutzler.de> > Subject: Re: [OpenWrt-Devel] [PATCH] ipq40xx: add label MAC address for > FritzBox 4040 > > On Monday, September 23, 2019 4:31:38 PM CEST Adrian Schmutzler wrote: > > This adds label MAC address for the AVM FritzBox 4040, the first > > device in ipq40xx target. > > I had to look this up a bit more, since my (broken) retail-unit Fritz!Box 4040 > does not have the MAC-Address on the sticker labeled as "MAC Address" (or > something like that). > Instead there is a "CWMP-Account" String/Number which displays the > Address as a "part" of it.
I thought the MAC address was on the box, but I'm not really sure and don't have the box anymore. > > Wouldn't it be better to just go with the "serial number" of the device in > this > case then? I need a MAC address for certain use cases, like calculating local/ULA IPv6 addresses based on MAC address or EUI that will allow identifying the device in a network (Freifunk...). For that, it's convenient to exploit the fact the most vendors print a MAC address on the device. A serial number won't help me there. So, CWMP-Account will be the best I can get ATM. Or are you pointing at something I don't see? > > Going deeper: The patch that introduced ucidef_set_label_macaddr > describes it as > > |commit 469e347f19ce9eefdc16f421b8e1f18ed60c310c > |Author: Adrian Schmutzler <freif...@adrianschmutzler.de> > |Date: Thu Aug 15 15:13:27 2019 +0200 > | > | 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. > | [...] > > ... This is somewhat strange in the context of the Fritz!Box 4040. > This is because the extra u-boot we use for the Fritz!Box 4040 makes a real > effort to patch the real mac-address into the device tree before handing it > off to the kernel. > > https://github.com/chunkeey/FritzBox-4040- > UBOOT/blob/master/board/qcom/ipq40xx_cdp/ipq40xx_cdp.c#L455 > > So, everything should just "click" with this alias added. > > label-mac-device = &gmac0; > > Or does it not? I tested this when I started the effort to add label-mac-address to OpenWrt several months ago. Back then there was no MAC address in /proc/device-tree (using find /proc/device-tree -name "*mac-address") I re-checked today and now there are local-mac-address entries for gmac0 and gmac1. So this must have been added recently? Anyway, I will send a new patch adding label-mac-device as you suggested. Best Adrian > > Cheers, > Christian > > > Signed-off-by: Adrian Schmutzler <freif...@adrianschmutzler.de> > > --- > > target/linux/ipq40xx/base-files/etc/board.d/02_network | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/target/linux/ipq40xx/base-files/etc/board.d/02_network > > b/target/linux/ipq40xx/base-files/etc/board.d/02_network > > index e5ba7260f3..082724ebfc 100755 > > --- a/target/linux/ipq40xx/base-files/etc/board.d/02_network > > +++ b/target/linux/ipq40xx/base-files/etc/board.d/02_network > > @@ -77,6 +77,9 @@ ipq40xx_setup_macs() > > wan_mac=$(mtd_get_mac_binary_ubi Factory 0x5006) > > lan_mac=$(mtd_get_mac_binary_ubi Factory 0x1006) > > ;; > > + avm,fritzbox-4040) > > + label_mac=$(cat /sys/class/net/eth0/address) > > + ;; > > engenius,ens620ext) > > wan_mac=$(mtd_get_mac_ascii u-boot-env ethaddr) > > lan_mac=$(macaddr_add "$wan_mac" 1) @@ -89,6 +92,7 > @@ > > ipq40xx_setup_macs() > > > > [ -n "$lan_mac" ] && ucidef_set_interface_macaddr "lan" $lan_mac > > [ -n "$wan_mac" ] && ucidef_set_interface_macaddr "wan" > $wan_mac > > + [ -n "$label_mac" ] && ucidef_set_label_macaddr $label_mac > > } > > > > board_config_update > > > > > > > > _______________________________________________ > openwrt-devel mailing list > openwrt-devel@lists.openwrt.org > https://lists.openwrt.org/mailman/listinfo/openwrt-devel
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