How can I configure port 1 as WAN on ipq40xx?

For Developers
1

Hi, I'm currently working on an ipq40xx device which has WAN port at port 1. (It seems most ipq40xx devices on OpenWrt use port 5 for WAN)
But I can't figure out how to set WAN on the port 1.

I've tried these things on RT-AC58U:

Finally, I found an almost-close solution:

ess-switch@c000000 {
	status = "okay";

	switch_lan_bmp = <0x3c>;
	switch_wan_bmp = <0x02>;
};

&gmac0 {
	vlan_tag = <1 0x3c>;
};

&gmac1 {
	qcom,phy_mdio_addr = <0>;
	vlan_tag = <2 0x02>;
};

changing qcom,phy_mdio_addr worked, except that it did not accept 0.
If I used value other than 0, it changed WAN port accordingly, and it worked well. Only value 0 seems to be a problem.
git grep "qcom,phy_mdio_addr" shows that qcom,phy_mdio_addr = <0>; is used for non-existing port. So the driver might be the cause.

How can we solve this? Is there another workaround for this?

2

Depends what you mean by WAN. Two elements

  1. Its the default route for packets, when routing isn't explicit
  2. There is a firewall in that direction

Now me I mainly work from the command line, so you do

ip route add default via ip.dress.here

I'll need to check the syntax when I get home.

Firewall is similar, take the ip of the wan address, and set up fillter and NAT on that as needed.

3

When I set port 2 (or port 3~5) to WAN using methods above, it successfully fetches IP address from external DHCP server. But if I use port 1, it fails. I don't think it's a matter of routing or firewall, something in the switch driver must be blocking the change (maybe the VLAN is hardcoded?).