017359f376
This commmit adds a udev rule that triggers for every network device that gets added. It checks if the network device is a VF and if the parent device is pinned. If it is pinned, then generate a new name for the VF which consists of the pinned name of the parent device, as well as the index of the VF. It relies on the network device driver exposing the information via sysfs, which was the case in my tests for mlx5_core, igb and bnxt_en. Specifically it checks if a device is a virtual function by checking for the existence of: /sys/class/net/<iface>/device/physfn It then follows that symlink and infers the vf index by looking at the virtfnX symlinks in the folder above. Signed-off-by: Stefan Hanreich <s.hanreich@proxmox.com> Link: https://lore.proxmox.com/20250722145223.351778-2-s.hanreich@proxmox.com
37 lines
1,008 B
Bash
37 lines
1,008 B
Bash
#!/bin/sh
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set -eu
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DEVICE_SYSFS_PCI_PATH=$(realpath "/sys${DEVPATH}/../..");
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if [ ! -L "$DEVICE_SYSFS_PCI_PATH/physfn" ]; then
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exit;
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fi
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PHYSFN_SYSFS_PCI_PATH=$(realpath "${DEVICE_SYSFS_PCI_PATH}/physfn");
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PHYSFN_IFACE_NAME=$(ls "${PHYSFN_SYSFS_PCI_PATH}/net")
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# interface is not pinned
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if [ ! -f "/usr/local/lib/systemd/network/50-pve-${PHYSFN_IFACE_NAME}.link" ]; then
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exit;
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fi
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# pin is not applied - or interface doesn't exist
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if ! ip link show "$PHYSFN_IFACE_NAME" > /dev/null 2>&1 ; then
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exit;
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fi
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DEVICE_PCI_ID=$(basename "$DEVICE_SYSFS_PCI_PATH");
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for file in $(find "${PHYSFN_SYSFS_PCI_PATH=$}/" -maxdepth 1 -type l -name 'virtfn*' ); do
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VF_PCI_ID=$(basename "$(realpath "$file")");
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if [ "$DEVICE_PCI_ID" = "$VF_PCI_ID" ]; then
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VF_INDEX=$(basename "$file" | grep -Eo '[[:digit:]]+$' -);
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echo "${PHYSFN_IFACE_NAME}v${VF_INDEX}";
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exit;
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fi
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done
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echo "interface seems to be a VF of ${PHYSFN_IFACE_NAME}, but could not find the VF index" 1>&2;
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exit;
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