x86: setup netdev paths for MX100

The Meraki MX100 has ten 1000BASE-T and 2 SFP ethernet ports through
3, 4-port PCIe devices. The default enumeration of these network
devices' names does not correspond to their labeling. Fix this by
explicitly naming the devices, mapping against their sysfs path.

Note that these default network names can only be up to 8 characters,
because we can have up to 8 characters of modifiers (e.g. ^br-,
.4096$), and because the maximum network interface name is 16
characters long.

Signed-off-by: Martin Kennedy <[email protected]>
[lowercase subject]
Signed-off-by: Paul Spooren <[email protected]>

target/linux/x86/base-files/etc/board.d/02_network

@@ -9,7 +9,19 @@ board_config_update
 
 case "$(board_name)" in
 cisco-mx100-hw)
-	ucidef_set_interfaces_lan_wan "eth0 eth1 eth2 eth3 eth4 eth5 eth7 eth8 eth9 eth10 eth11" "eth6"
+	ucidef_set_network_device_path "mgmt" "pci0000:00/0000:00:01.2/0000:03:00.3"
+	ucidef_set_network_device_path "wan" "pci0000:00/0000:00:01.2/0000:03:00.2"
+	ucidef_set_network_device_path "eth2" "pci0000:00/0000:00:01.2/0000:03:00.1"
+	ucidef_set_network_device_path "eth3" "pci0000:00/0000:00:01.2/0000:03:00.0"
+	ucidef_set_network_device_path "eth4" "pci0000:00/0000:00:01.0/0000:01:00.2"
+	ucidef_set_network_device_path "eth5" "pci0000:00/0000:00:01.0/0000:01:00.1"
+	ucidef_set_network_device_path "eth6" "pci0000:00/0000:00:01.0/0000:01:00.4"
+	ucidef_set_network_device_path "eth7" "pci0000:00/0000:00:01.0/0000:01:00.3"
+	ucidef_set_network_device_path "eth8" "pci0000:00/0000:00:01.1/0000:02:00.1"
+	ucidef_set_network_device_path "eth9" "pci0000:00/0000:00:01.1/0000:02:00.0"
+	ucidef_set_network_device_path "eth10" "pci0000:00/0000:00:01.1/0000:02:00.3"
+	ucidef_set_network_device_path "eth11" "pci0000:00/0000:00:01.1/0000:02:00.2"
+	ucidef_set_interfaces_lan_wan "mgmt eth2 eth3 eth4 eth5 eth6 eth7 eth8 eth9 eth10 eth11" "wan"
 	;;
 pc-engines-apu1|pc-engines-apu2|pc-engines-apu3)
 	ucidef_set_interfaces_lan_wan "eth1 eth2" "eth0"