(Solved) Trying to guess how to assing mac address from weird partition

[JakauBahuslau]

So I am trying to port OpenWRT to my router (Ruijie RG-EW1200G PRO). It stores it's own mac address from partition called product_info , and it is storred in a weird way. My other router is storring it's own mac addresses in a binary form, while ruijie's one is storing ONE mac address in text and it calculates others simply by adding 1 to original mac. How can I assign those macs in DTS?

Here is the dump of my product_info partition: https://pastebin.com/0RsmDbe0

[frollic]

look (for instance) at the DTS for DIR-2660 https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=b5dd746cbb1aaf91f4b68e9f3eda97413550d904

&wifi0 {
        mtd-mac-address = <&factory 0xe000>;
        mtd-mac-address-increment = <1>;
};
 
&wifi1 {
       mtd-mac-address = <&factory 0xe000>;
       mtd-mac-address-increment = <2>;
};

[georgem83]

Since it’s stored in a list of variables, you can’t AFAIK do it in the DTS since the MAC address isn’t at a fixed offset.

Instead, you can use the 02_network file to obtain the value of the variable. In your case:

label_mac=$(mtd_get_mac_ascii product_info ethaddr)

Look for 02_network files under different targets for more examples.

[JakauBahuslau]

So I added lines into /etc/board.d/02_network into both functions:

ramips_setup_interfaces()
{
...
ruijie,rg-ew1200g_pro|\
...
}
...
ramips_setup_macs()
{
ruijie,rg-ew1200g_pro)
		label_mac=$(mtd_get_mac_ascii product_info ethaddr)
		;;
...
}

It still generates random mac but folowing lines appeared in bootlog:

ip: SIOCGIFFLAGS: No such device
ip: can't find device 'lan'
sendto(): Network unreachable
sendto(): Network unreachable
ip: can't find device 'lan'
ip: SIOCGIFFLAGS: No such device

In case of what, I defined ports in DTS like that:

&switch0 {
	ports {
		wan: port@0 {
			status = "okay";
			label = "wan";
		};

		port@1 {
			status = "okay";
			label = "lan3";
		};

		port@2 {
			status = "okay";
			label = "lan2";
		};

		port@3 {
			status = "okay";
			label = "lan1";
		};
	};
};

What I am still doing wrong?

[georgem83]

You’re obtaining the MAC address but not setting it.
Take a look at https://github.com/openwrt/openwrt/blob/main/target/linux/ipq40xx/base-files/etc/board.d/02_network

Can’t speak for the other issue(s) you may have though.

[JakauBahuslau]

that helped, thx