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ramips: mt7621: support openwrt,netdev-name for renaming interfaces

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Edgerouter X currently has its eth1 port on the switch missing since there
is a naming conflict currently.

So, as the root cause is mixing kernel support for DSA interfaces having
predictable names set via "label" property vs others having it assigned
dynamically lets avoid the conflict by using our own custom property as
suggested upstream [1].

So, add support via "openwrt,netdev-name" property and use it on ERX.

Fixes: 2a25c6ace8d8 ("ramips: get rid of downstream network device label patch")
Fixes: #15643
Link: https://github.com/openwrt/openwrt/pull/17062
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Robert Marko 2024-11-24 21:15:08 +01:00
parent 72dec105fb
commit 5695267847
4 changed files with 22 additions and 8 deletions
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3
target/linux/ramips/dts/mt7621_ubnt_edgerouter-x-sfp.dts
View File

@ -69,11 +69,12 @@
ports {
port@5 {
reg = <5>;
label = "eth5";
openwrt,netdev-name = "eth5";
phy-handle = <&ephy7>;
phy-mode = "rgmii-rxid";
nvmem-cells = <&macaddr_factory_22 5>;
nvmem-cell-names = "mac-address";
/delete-property/ label;
};
};
};

2
target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dts
View File

@ -7,7 +7,7 @@
&gmac1 {
status = "okay";
label = "eth0";
openwrt,netdev-name = "eth0";
phy-handle = <&ethphy0>;
nvmem-cells = <&macaddr_factory_22 0>;

17
target/linux/ramips/dts/mt7621_ubnt_edgerouter-x.dtsi
View File

@ -22,42 +22,47 @@
&gmac0 {
nvmem-cells = <&macaddr_factory_22 0>;
nvmem-cell-names = "mac-address";
label = "dsa";
openwrt,netdev-name = "dsa";
};
&switch0 {
ports {
port@0 {
status = "okay";
label = "eth0";
openwrt,netdev-name = "eth0";
/delete-property/ label;
};
port@1 {
status = "okay";
label = "eth1";
openwrt,netdev-name = "eth1";
nvmem-cells = <&macaddr_factory_22 1>;
nvmem-cell-names = "mac-address";
/delete-property/ label;
};
port@2 {
status = "okay";
label = "eth2";
openwrt,netdev-name = "eth2";
nvmem-cells = <&macaddr_factory_22 2>;
nvmem-cell-names = "mac-address";
/delete-property/ label;
};
port@3 {
status = "okay";
label = "eth3";
openwrt,netdev-name = "eth3";
nvmem-cells = <&macaddr_factory_22 3>;
nvmem-cell-names = "mac-address";
/delete-property/ label;
};
port@4 {
status = "okay";
label = "eth4";
openwrt,netdev-name = "eth4";
nvmem-cells = <&macaddr_factory_22 4>;
nvmem-cell-names = "mac-address";
/delete-property/ label;
};
};
};

8
target/linux/ramips/mt7621/base-files/lib/preinit/04_set_netdev_label
View File

@ -10,6 +10,14 @@ set_netdev_labels() {
[ "$netdev" = "$label" ] && continue
ip link set "$netdev" name "$label"
done
for dir in /sys/class/net/*; do
[ -r "$dir/of_node/openwrt,netdev-name" ] || continue
read -r label < "$dir/of_node/openwrt,netdev-name"
netdev="${dir##*/}"
[ "$netdev" = "$label" ] && continue
ip link set "$netdev" name "$label"
done
}
boot_hook_add preinit_main set_netdev_labels