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base-files: add ucidef_set_network_device_path_port function

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The already existing uci function ucidef_set_network_device_path
can be used to specify a unique PCI address to name a network interface.
However, I noticed that some NIC ports share the same PCI address
but are still distinguishable by the dev_port value of the network
interface's sysfs entry.

This commit adds a new uci function ucidef_set_network_device_path_port,
which is similar to ucidef_set_network_device_path but takes an
additional argument where the user can specify the dev_port value.
The internal function preinit_config_port loops through
all network interfaces at the given PCI address and chooses the one
where the dev_port value matches.

This was tested on an x86_64 device using a Mellanox ConnectX-3 card.

Signed-off-by: Til Kaiser <mail@tk154.de>
Link: https://github.com/openwrt/openwrt/pull/16560
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
This commit is contained in:
Til Kaiser 2024-09-29 16:55:57 +02:00 committed by Hauke Mehrtens
parent 0a47d518df
commit 503596b8ce
2 changed files with 23 additions and 2 deletions
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5
package/base-files/files/lib/functions/uci-defaults.sh
View File

@ -122,6 +122,11 @@ ucidef_set_network_device_path() {
_ucidef_set_network_device_common $1 path $2
}
ucidef_set_network_device_path_port() {
_ucidef_set_network_device_common $1 path $2
_ucidef_set_network_device_common $1 port $3
}
ucidef_set_network_device_gro() {
_ucidef_set_network_device_common $1 gro $2
}

20
package/base-files/files/lib/preinit/10_indicate_preinit
View File

@ -65,12 +65,27 @@ preinit_config_switch() {
preinit_config_port() {
local original
local dev_port
local netdev="$1"
local path="$2"
local port="$3"
[ -d "/sys/devices/$path/net" ] || return
original="$(ls "/sys/devices/$path/net" | head -1)"
if [ -z "$port" ]; then
original="$(ls "/sys/devices/$path/net" | head -1)"
else
for device in /sys/devices/$path/net/*; do
dev_port="$(cat "$device/dev_port")"
if [ "$dev_port" = "$port" ]; then
original="${device##*/}"
break
fi
done
[ -z "$original" ] && return
fi
[ "$netdev" = "$original" ] && return
@ -109,7 +124,8 @@ preinit_config_board() {
json_select "network_device"
json_select "$netdev"
json_get_vars path path
[ -n "$path" ] && preinit_config_port "$netdev" "$path"
json_get_vars port port
[ -n "$path" ] && preinit_config_port "$netdev" "$path" "$port"
json_select ..
json_select ..
done