Ludwig Nussel
d585771c9a
it's not really SLE-only, so I opted to name it udev-persistent-ifnames instead of udev-branding-SLE OBS-URL: https://build.opensuse.org/request/show/308347 OBS-URL: https://build.opensuse.org/package/show/Base:System/udev-persistent-ifnames?expand=0&rev=1
80 lines
1.8 KiB
Bash
80 lines
1.8 KiB
Bash
#!/bin/bash -e
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#
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# This script is run to rename virtual interfaces
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#
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if [ -n "$UDEV_LOG" ]; then
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if [ "$UDEV_LOG" -ge 7 ]; then
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set -x
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fi
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fi
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# according to dev_new_index(), ifindex is within [1, INT_MAX]
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int_max=$(/usr/bin/getconf INT_MAX)
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ifindex_before() {
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a=$1
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b=$2
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((0 < (b - a) && (b - a) < int_max / 2 ||
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-1 * int_max < (b - a) && (b - a) < -1 * int_max / 2))
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}
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rename_interface() {
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local src_net=$1
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local dest_net=$2
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local err=0
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/sbin/ip link set dev $src_net down
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/sbin/ip link set dev $src_net name $dest_net
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}
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if [ -z "$INTERFACE" ]; then
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echo "missing \$INTERFACE" >&2
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exit 1
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fi
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if [ -e "/sys/class/net/$INTERFACE/device/physfn" ]; then
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pf=$(ls -1 "/sys/class/net/$INTERFACE/device/physfn/net")
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if [ $(echo "$pf" | wc -l) -ne 1 ]; then
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echo "too many pf's" >&2
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exit 1
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fi
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read vfindex < "/sys/class/net/$INTERFACE/ifindex"
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read pfindex < "/sys/class/net/$pf/ifindex"
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if ifindex_before $pfindex $vfindex; then
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bus_info=$(basename $(readlink "/sys/class/net/$INTERFACE/device"))
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for virtfn in "/sys/class/net/$pf/device/"virtfn*; do
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if [ "$(basename $(readlink "$virtfn"))" = "$bus_info" ]; then
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vfnum=$(basename "$virtfn")
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vfnum=${vfnum#virtfn}
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echo "INTERFACE_NEW=$pf.vf$vfnum"
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exit 0
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fi
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done
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fi
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fi
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read pfindex < "/sys/class/net/$INTERFACE/ifindex"
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shopt -s nullglob
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for virtfn in "/sys/class/net/$INTERFACE/device/"virtfn*; do
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vf=$(ls -1 "$virtfn/net")
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if [ $(echo "$vf" | wc -l) -ne 1 ]; then
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echo "too many vf's" >&2
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exit 1
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fi
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read vfindex < "/sys/class/net/$vf/ifindex"
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if ifindex_before $vfindex $pfindex; then
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vfnum=$(basename "$virtfn")
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vfnum=${vfnum#virtfn}
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if [ "$INTERFACE_NEW" ]; then
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new_name=$INTERFACE_NEW
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else
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new_name=$INTERFACE
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fi
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new_name="$new_name.vf$vfnum"
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if [ "$vf" != "$new_name" ]; then
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rename_interface "$vf" "$new_name"
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fi
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fi
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done
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