octeon: implement interface rename by label from device tree

adds patch to octeon ethernet driver that to rename interface
name by label from device tree

Tested-by: Johannes Kimmel <fff@bareminimum.eu>
Signed-off-by: Roman Kuzmitskii <damex.pp@icloud.com>

diff --git a/target/linux/octeon/patches-5.4/700-allocate_interface_by_label.patch b/target/linux/octeon/patches-5.4/700-allocate_interface_by_label.patch
new file mode 100644 (file)
index 0000000..0aef899
--- /dev/null
+++ b/target/linux/octeon/patches-5.4/700-allocate_interface_by_label.patch
@@ -0,0 +1,38 @@
+From: Roman Kuzmitskii <damex.pp@icloud.com>
+Date: Wed, 28 Oct 2020 19:00:00 +0000
+Subject: [PATCH] staging: octeon: add net-labels support
+
+With this patch, device name can be set within dts file
+in the same way as dsa port can.
+
+Add label to pip interface node to use this feature:
+label = "lan0";
+
+Tested-by: Johannes Kimmel <fff@bareminimum.eu>
+Signed-off-by: Roman Kuzmitskii <damex.pp@icloud.com>
+--- a/drivers/staging/octeon/ethernet.c
++++ b/drivers/staging/octeon/ethernet.c
+@@ -407,9 +407,12 @@
+ {
+       struct octeon_ethernet *priv = netdev_priv(dev);
+       const u8 *mac = NULL;
++      const u8 *label = NULL;
+ 
+-      if (priv->of_node)
++      if (priv->of_node) {
+               mac = of_get_mac_address(priv->of_node);
++              label = of_get_property(priv->of_node, "label", NULL);
++      }
+ 
+       if (!IS_ERR_OR_NULL(mac))
+               ether_addr_copy(dev->dev_addr, mac);
+@@ -444,6 +447,9 @@
+       if (dev->netdev_ops->ndo_stop)
+               dev->netdev_ops->ndo_stop(dev);
+ 
++      if (!IS_ERR_OR_NULL(label))
++              dev_alloc_name(dev, label);
++
+       return 0;
+ }
+