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authorMartin Kennedy <hurricos@gmail.com>2022-08-21 20:37:18 -0400
committerPaul Spooren <mail@aparcar.org>2022-09-10 21:16:20 +0200
commitb688bf83f9d6084b00719672ec197faf7adb493e (patch)
treea0dc842780d51cd5b8aafe8b140f24d8cb642357 /package
parentfee31628c422e71c5ab0985ce10e960dad3c87f2 (diff)
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base-files: rename ethernet devs on known boards
Some platforms lack an established way to name netdevs; for example, on x86, PCIe-based ethernet interfaces will be named starting from eth0 in the order they are probed. This is a problem for many devices supported explicitly by OpenWrt which have hard-wired, standalone or on-CPU NICs not supported by DSA (which is usually used to rename the ports based on their ostensible function). To fix this, add a mapping between ethernet device name and sysfs device path to board.json; this allows us to configure ethernet device names we know about for a given board so that they correspond to external labeling. Signed-off-by: Martin Kennedy <hurricos@gmail.com>
Diffstat (limited to 'package')
-rw-r--r--package/base-files/files/lib/functions/uci-defaults.sh8
-rw-r--r--package/base-files/files/lib/preinit/10_indicate_preinit43
2 files changed, 51 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/uci-defaults.sh b/package/base-files/files/lib/functions/uci-defaults.sh
index f96e645e73..4f5b9634bb 100644
--- a/package/base-files/files/lib/functions/uci-defaults.sh
+++ b/package/base-files/files/lib/functions/uci-defaults.sh
@@ -114,6 +114,14 @@ ucidef_set_network_device_mac() {
json_select ..
}
+ucidef_set_network_device_path() {
+ json_select_object "network_device"
+ json_select_object "$1"
+ json_add_string path "$2"
+ json_select ..
+ json_select ..
+}
+
_ucidef_add_switch_port() {
# inherited: $num $device $need_tag $want_untag $role $index $prev_role
# inherited: $n_cpu $n_ports $n_vlan $cpu0 $cpu1 $cpu2 $cpu3 $cpu4 $cpu5
diff --git a/package/base-files/files/lib/preinit/10_indicate_preinit b/package/base-files/files/lib/preinit/10_indicate_preinit
index debb3d4480..87a4f4da3e 100644
--- a/package/base-files/files/lib/preinit/10_indicate_preinit
+++ b/package/base-files/files/lib/preinit/10_indicate_preinit
@@ -63,6 +63,20 @@ preinit_config_switch() {
json_select ..
}
+preinit_config_port() {
+ local original
+
+ local netdev="$1"
+ local path="$2"
+
+ [ -d "/sys/devices/$path/net" ] || return
+ original="$(ls "/sys/devices/$path/net" | head -1)"
+
+ [ "$netdev" = "$original" ] && return
+
+ ip link set "$original" name "$netdev"
+}
+
preinit_config_board() {
/bin/board_detect /tmp/board.json
@@ -73,6 +87,35 @@ preinit_config_board() {
json_init
json_load "$(cat /tmp/board.json)"
+ # Find the current highest eth*
+ max_eth=$(grep -o '^ *eth[0-9]*:' /proc/net/dev | tr -dc '[0-9]\n' | sort -n | tail -1)
+ # Find and move netdevs using eth*s we are configuring
+ json_get_keys keys "network_device"
+ for netdev in $keys; do
+ json_select "network_device"
+ json_select "$netdev"
+ json_get_vars path path
+ next_eth="$(echo "$netdev" | grep 'eth[0-9]*' | tr -dc '[0-9]')"
+ [ "$next_eth" -gt "$max_eth" ] && max_eth=$next_eth
+ if [ -n "$path" -a -h "/sys/class/net/$netdev" ]; then
+ ip link set "$netdev" down
+ ip link set "$netdev" name eth$((++max_eth))
+ fi
+ json_select ..
+ json_select ..
+ done
+
+ # Move interfaces by path to their netdev name
+ json_get_keys keys "network_device"
+ for netdev in $keys; do
+ json_select "network_device"
+ json_select "$netdev"
+ json_get_vars path path
+ [ -n "$path" ] && preinit_config_port "$netdev" "$path"
+ json_select ..
+ json_select ..
+ done
+
json_select network
json_select "lan"
json_get_vars device