977f65f01d
Reported and proposed by @dcb314. Fixes #7656 and #7657.
767 lines
27 KiB
C
767 lines
27 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/***
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This file is part of systemd.
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Copyright 2012 Kay Sievers <kay@vrfy.org>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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/*
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* Predictable network interface device names based on:
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* - firmware/bios-provided index numbers for on-board devices
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* - firmware-provided pci-express hotplug slot index number
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* - physical/geographical location of the hardware
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* - the interface's MAC address
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*
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* http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames
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*
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* Two character prefixes based on the type of interface:
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* en — Ethernet
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* sl — serial line IP (slip)
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* wl — wlan
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* ww — wwan
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*
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* Type of names:
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* b<number> — BCMA bus core number
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* c<bus_id> — bus id of a grouped CCW or CCW device,
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* with all leading zeros stripped [s390]
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* o<index>[n<phys_port_name>|d<dev_port>]
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* — on-board device index number
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* s<slot>[f<function>][n<phys_port_name>|d<dev_port>]
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* — hotplug slot index number
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* x<MAC> — MAC address
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* [P<domain>]p<bus>s<slot>[f<function>][n<phys_port_name>|d<dev_port>]
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* — PCI geographical location
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* [P<domain>]p<bus>s<slot>[f<function>][u<port>][..][c<config>][i<interface>]
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* — USB port number chain
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* v<slot> - VIO slot number (IBM PowerVM)
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* a<vendor><model>i<instance> — Platform bus ACPI instance id
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*
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* All multi-function PCI devices will carry the [f<function>] number in the
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* device name, including the function 0 device.
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*
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* When using PCI geography, The PCI domain is only prepended when it is not 0.
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*
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* For USB devices the full chain of port numbers of hubs is composed. If the
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* name gets longer than the maximum number of 15 characters, the name is not
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* exported.
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* The usual USB configuration == 1 and interface == 0 values are suppressed.
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*
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* PCI Ethernet card with firmware index "1":
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* ID_NET_NAME_ONBOARD=eno1
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* ID_NET_NAME_ONBOARD_LABEL=Ethernet Port 1
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*
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* PCI Ethernet card in hotplug slot with firmware index number:
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* /sys/devices/pci0000:00/0000:00:1c.3/0000:05:00.0/net/ens1
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* ID_NET_NAME_MAC=enx000000000466
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* ID_NET_NAME_PATH=enp5s0
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* ID_NET_NAME_SLOT=ens1
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*
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* PCI Ethernet multi-function card with 2 ports:
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* /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/net/enp2s0f0
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* ID_NET_NAME_MAC=enx78e7d1ea46da
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* ID_NET_NAME_PATH=enp2s0f0
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* /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.1/net/enp2s0f1
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* ID_NET_NAME_MAC=enx78e7d1ea46dc
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* ID_NET_NAME_PATH=enp2s0f1
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*
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* PCI wlan card:
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* /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlp3s0
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* ID_NET_NAME_MAC=wlx0024d7e31130
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* ID_NET_NAME_PATH=wlp3s0
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*
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* USB built-in 3G modem:
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* /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4/2-1.4:1.6/net/wwp0s29u1u4i6
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* ID_NET_NAME_MAC=wwx028037ec0200
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* ID_NET_NAME_PATH=wwp0s29u1u4i6
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*
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* USB Android phone:
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* /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.0/net/enp0s29u1u2
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* ID_NET_NAME_MAC=enxd626b3450fb5
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* ID_NET_NAME_PATH=enp0s29u1u2
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*
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* s390 grouped CCW interface:
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* /sys/devices/css0/0.0.0007/0.0.f5f0/group_device/net/encf5f0
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* ID_NET_NAME_MAC=enx026d3c00000a
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* ID_NET_NAME_PATH=encf5f0
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <linux/pci_regs.h>
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#include "dirent-util.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "stdio-util.h"
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#include "string-util.h"
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#include "udev.h"
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#define ONBOARD_INDEX_MAX (16*1024-1)
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enum netname_type{
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NET_UNDEF,
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NET_PCI,
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NET_USB,
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NET_BCMA,
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NET_VIRTIO,
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NET_CCW,
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NET_VIO,
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NET_PLATFORM,
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};
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struct netnames {
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enum netname_type type;
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uint8_t mac[6];
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bool mac_valid;
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struct udev_device *pcidev;
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char pci_slot[IFNAMSIZ];
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char pci_path[IFNAMSIZ];
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char pci_onboard[IFNAMSIZ];
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const char *pci_onboard_label;
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char usb_ports[IFNAMSIZ];
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char bcma_core[IFNAMSIZ];
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char ccw_busid[IFNAMSIZ];
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char vio_slot[IFNAMSIZ];
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char platform_path[IFNAMSIZ];
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};
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/* skip intermediate virtio devices */
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static struct udev_device *skip_virtio(struct udev_device *dev) {
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struct udev_device *parent = dev;
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/* there can only ever be one virtio bus per parent device, so we can
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safely ignore any virtio buses. see
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<http://lists.linuxfoundation.org/pipermail/virtualization/2015-August/030331.html> */
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while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))
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parent = udev_device_get_parent(parent);
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return parent;
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}
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/* retrieve on-board index number and label from firmware */
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static int dev_pci_onboard(struct udev_device *dev, struct netnames *names) {
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unsigned dev_port = 0;
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size_t l;
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char *s;
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const char *attr, *port_name;
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int idx;
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/* ACPI _DSM — device specific method for naming a PCI or PCI Express device */
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attr = udev_device_get_sysattr_value(names->pcidev, "acpi_index");
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/* SMBIOS type 41 — Onboard Devices Extended Information */
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if (!attr)
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attr = udev_device_get_sysattr_value(names->pcidev, "index");
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if (!attr)
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return -ENOENT;
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idx = strtoul(attr, NULL, 0);
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if (idx <= 0)
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return -EINVAL;
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/* Some BIOSes report rubbish indexes that are excessively high (2^24-1 is an index VMware likes to report for
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* example). Let's define a cut-off where we don't consider the index reliable anymore. We pick some arbitrary
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* cut-off, which is somewhere beyond the realistic number of physical network interface a system might
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* have. Ideally the kernel would already filter his crap for us, but it doesn't currently. */
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if (idx > ONBOARD_INDEX_MAX)
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return -ENOENT;
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/* kernel provided port index for multiple ports on a single PCI function */
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attr = udev_device_get_sysattr_value(dev, "dev_port");
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if (attr)
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dev_port = strtol(attr, NULL, 10);
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/* kernel provided front panel port name for multiple port PCI device */
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port_name = udev_device_get_sysattr_value(dev, "phys_port_name");
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s = names->pci_onboard;
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l = sizeof(names->pci_onboard);
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l = strpcpyf(&s, l, "o%d", idx);
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if (port_name)
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l = strpcpyf(&s, l, "n%s", port_name);
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else if (dev_port > 0)
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l = strpcpyf(&s, l, "d%d", dev_port);
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if (l == 0)
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names->pci_onboard[0] = '\0';
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names->pci_onboard_label = udev_device_get_sysattr_value(names->pcidev, "label");
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return 0;
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}
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/* read the 256 bytes PCI configuration space to check the multi-function bit */
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static bool is_pci_multifunction(struct udev_device *dev) {
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_cleanup_close_ int fd = -1;
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const char *filename;
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uint8_t config[64];
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filename = strjoina(udev_device_get_syspath(dev), "/config");
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fd = open(filename, O_RDONLY | O_CLOEXEC);
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if (fd < 0)
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return false;
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if (read(fd, &config, sizeof(config)) != sizeof(config))
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return false;
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/* bit 0-6 header type, bit 7 multi/single function device */
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if ((config[PCI_HEADER_TYPE] & 0x80) != 0)
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return true;
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return false;
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}
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static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
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struct udev *udev = udev_device_get_udev(names->pcidev);
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unsigned domain, bus, slot, func, dev_port = 0;
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size_t l;
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char *s;
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const char *attr, *port_name;
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struct udev_device *pci = NULL;
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char slots[PATH_MAX];
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_cleanup_closedir_ DIR *dir = NULL;
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struct dirent *dent;
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int hotplug_slot = 0, err = 0;
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if (sscanf(udev_device_get_sysname(names->pcidev), "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4)
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return -ENOENT;
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/* kernel provided port index for multiple ports on a single PCI function */
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attr = udev_device_get_sysattr_value(dev, "dev_port");
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if (attr)
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dev_port = strtol(attr, NULL, 10);
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/* kernel provided front panel port name for multiple port PCI device */
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port_name = udev_device_get_sysattr_value(dev, "phys_port_name");
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/* compose a name based on the raw kernel's PCI bus, slot numbers */
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s = names->pci_path;
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l = sizeof(names->pci_path);
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if (domain > 0)
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l = strpcpyf(&s, l, "P%u", domain);
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l = strpcpyf(&s, l, "p%us%u", bus, slot);
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if (func > 0 || is_pci_multifunction(names->pcidev))
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l = strpcpyf(&s, l, "f%u", func);
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if (port_name)
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l = strpcpyf(&s, l, "n%s", port_name);
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else if (dev_port > 0)
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l = strpcpyf(&s, l, "d%u", dev_port);
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if (l == 0)
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names->pci_path[0] = '\0';
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/* ACPI _SUN — slot user number */
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pci = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");
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if (!pci) {
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err = -ENOENT;
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goto out;
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}
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xsprintf(slots, "%s/slots", udev_device_get_syspath(pci));
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dir = opendir(slots);
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if (!dir) {
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err = -errno;
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goto out;
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}
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FOREACH_DIRENT_ALL(dent, dir, break) {
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int i;
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char *rest, *address, str[PATH_MAX];
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if (dent->d_name[0] == '.')
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continue;
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i = strtol(dent->d_name, &rest, 10);
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if (rest[0] != '\0')
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continue;
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if (i < 1)
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continue;
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xsprintf(str, "%s/%s/address", slots, dent->d_name);
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if (read_one_line_file(str, &address) >= 0) {
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/* match slot address with device by stripping the function */
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if (strneq(address, udev_device_get_sysname(names->pcidev), strlen(address)))
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hotplug_slot = i;
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free(address);
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}
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if (hotplug_slot > 0)
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break;
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}
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if (hotplug_slot > 0) {
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s = names->pci_slot;
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l = sizeof(names->pci_slot);
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if (domain > 0)
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l = strpcpyf(&s, l, "P%d", domain);
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l = strpcpyf(&s, l, "s%d", hotplug_slot);
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if (func > 0 || is_pci_multifunction(names->pcidev))
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l = strpcpyf(&s, l, "f%d", func);
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if (port_name)
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l = strpcpyf(&s, l, "n%s", port_name);
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else if (dev_port > 0)
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l = strpcpyf(&s, l, "d%d", dev_port);
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if (l == 0)
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names->pci_slot[0] = '\0';
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}
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out:
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udev_device_unref(pci);
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return err;
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}
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static int names_vio(struct udev_device *dev, struct netnames *names) {
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struct udev_device *parent;
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unsigned busid, slotid, ethid;
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const char *syspath;
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/* check if our direct parent is a VIO device with no other bus in-between */
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parent = udev_device_get_parent(dev);
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if (!parent)
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return -ENOENT;
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if (!streq_ptr("vio", udev_device_get_subsystem(parent)))
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return -ENOENT;
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/* The devices' $DEVPATH number is tied to (virtual) hardware (slot id
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* selected in the HMC), thus this provides a reliable naming (e.g.
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* "/devices/vio/30000002/net/eth1"); we ignore the bus number, as
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* there should only ever be one bus, and then remove leading zeros. */
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syspath = udev_device_get_syspath(dev);
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if (sscanf(syspath, "/sys/devices/vio/%4x%4x/net/eth%u", &busid, &slotid, ðid) != 3)
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return -EINVAL;
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xsprintf(names->vio_slot, "v%u", slotid);
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names->type = NET_VIO;
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return 0;
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}
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#define _PLATFORM_TEST "/sys/devices/platform/vvvvPPPP"
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#define _PLATFORM_PATTERN4 "/sys/devices/platform/%4s%4x:%2x/net/eth%u"
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#define _PLATFORM_PATTERN3 "/sys/devices/platform/%3s%4x:%2x/net/eth%u"
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static int names_platform(struct udev_device *dev, struct netnames *names, bool test) {
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struct udev_device *parent;
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char vendor[5];
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unsigned model, instance, ethid;
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const char *syspath, *pattern, *validchars;
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/* check if our direct parent is a platform device with no other bus in-between */
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parent = udev_device_get_parent(dev);
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if (!parent)
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return -ENOENT;
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if (!streq_ptr("platform", udev_device_get_subsystem(parent)))
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return -ENOENT;
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syspath = udev_device_get_syspath(dev);
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/* syspath is too short, to have a valid ACPI instance */
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if (strlen(syspath) < sizeof _PLATFORM_TEST)
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return -EINVAL;
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/* Vendor ID can be either PNP ID (3 chars A-Z) or ACPI ID (4 chars A-Z and numerals) */
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if (syspath[sizeof _PLATFORM_TEST - 1] == ':') {
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pattern = _PLATFORM_PATTERN4;
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validchars = UPPERCASE_LETTERS DIGITS;
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} else {
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pattern = _PLATFORM_PATTERN3;
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validchars = UPPERCASE_LETTERS;
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}
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/* Platform devices are named after ACPI table match, and instance id
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* eg. "/sys/devices/platform/HISI00C2:00");
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* The Vendor (3 or 4 char), followed by hexdecimal model number : instance id.
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*/
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wformat-nonliteral"
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if (sscanf(syspath, pattern, vendor, &model, &instance, ðid) != 4)
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return -EINVAL;
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#pragma GCC diagnostic pop
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if (!in_charset(vendor, validchars))
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return -ENOENT;
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ascii_strlower(vendor);
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xsprintf(names->platform_path, "a%s%xi%u", vendor, model, instance);
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names->type = NET_PLATFORM;
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return 0;
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}
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static int names_pci(struct udev_device *dev, struct netnames *names) {
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struct udev_device *parent;
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assert(dev);
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assert(names);
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parent = udev_device_get_parent(dev);
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/* skip virtio subsystem if present */
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parent = skip_virtio(parent);
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if (!parent)
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return -ENOENT;
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/* check if our direct parent is a PCI device with no other bus in-between */
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if (streq_ptr("pci", udev_device_get_subsystem(parent))) {
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names->type = NET_PCI;
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names->pcidev = parent;
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} else {
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names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);
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if (!names->pcidev)
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return -ENOENT;
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}
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dev_pci_onboard(dev, names);
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dev_pci_slot(dev, names);
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return 0;
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}
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static int names_usb(struct udev_device *dev, struct netnames *names) {
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struct udev_device *usbdev;
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char name[256];
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char *ports;
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char *config;
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char *interf;
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size_t l;
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char *s;
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assert(dev);
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assert(names);
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usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");
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if (!usbdev)
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return -ENOENT;
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/* get USB port number chain, configuration, interface */
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strscpy(name, sizeof(name), udev_device_get_sysname(usbdev));
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s = strchr(name, '-');
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if (!s)
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return -EINVAL;
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ports = s+1;
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s = strchr(ports, ':');
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if (!s)
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return -EINVAL;
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s[0] = '\0';
|
|
config = s+1;
|
|
|
|
s = strchr(config, '.');
|
|
if (!s)
|
|
return -EINVAL;
|
|
s[0] = '\0';
|
|
interf = s+1;
|
|
|
|
/* prefix every port number in the chain with "u" */
|
|
s = ports;
|
|
while ((s = strchr(s, '.')))
|
|
s[0] = 'u';
|
|
s = names->usb_ports;
|
|
l = strpcpyl(&s, sizeof(names->usb_ports), "u", ports, NULL);
|
|
|
|
/* append USB config number, suppress the common config == 1 */
|
|
if (!streq(config, "1"))
|
|
l = strpcpyl(&s, sizeof(names->usb_ports), "c", config, NULL);
|
|
|
|
/* append USB interface number, suppress the interface == 0 */
|
|
if (!streq(interf, "0"))
|
|
l = strpcpyl(&s, sizeof(names->usb_ports), "i", interf, NULL);
|
|
if (l == 0)
|
|
return -ENAMETOOLONG;
|
|
|
|
names->type = NET_USB;
|
|
return 0;
|
|
}
|
|
|
|
static int names_bcma(struct udev_device *dev, struct netnames *names) {
|
|
struct udev_device *bcmadev;
|
|
unsigned int core;
|
|
|
|
assert(dev);
|
|
assert(names);
|
|
|
|
bcmadev = udev_device_get_parent_with_subsystem_devtype(dev, "bcma", NULL);
|
|
if (!bcmadev)
|
|
return -ENOENT;
|
|
|
|
/* bus num:core num */
|
|
if (sscanf(udev_device_get_sysname(bcmadev), "bcma%*u:%u", &core) != 1)
|
|
return -EINVAL;
|
|
/* suppress the common core == 0 */
|
|
if (core > 0)
|
|
xsprintf(names->bcma_core, "b%u", core);
|
|
|
|
names->type = NET_BCMA;
|
|
return 0;
|
|
}
|
|
|
|
static int names_ccw(struct udev_device *dev, struct netnames *names) {
|
|
struct udev_device *cdev;
|
|
const char *bus_id, *subsys;
|
|
size_t bus_id_len;
|
|
size_t bus_id_start;
|
|
int rc;
|
|
|
|
assert(dev);
|
|
assert(names);
|
|
|
|
/* Retrieve the associated CCW device */
|
|
cdev = udev_device_get_parent(dev);
|
|
/* skip virtio subsystem if present */
|
|
cdev = skip_virtio(cdev);
|
|
if (!cdev)
|
|
return -ENOENT;
|
|
|
|
/* Network devices are either single or grouped CCW devices */
|
|
subsys = udev_device_get_subsystem(cdev);
|
|
if (!STRPTR_IN_SET(subsys, "ccwgroup", "ccw"))
|
|
return -ENOENT;
|
|
|
|
/* Retrieve bus-ID of the CCW device. The bus-ID uniquely
|
|
* identifies the network device on the Linux on System z channel
|
|
* subsystem. Note that the bus-ID contains lowercase characters.
|
|
*/
|
|
bus_id = udev_device_get_sysname(cdev);
|
|
if (!bus_id)
|
|
return -ENOENT;
|
|
|
|
/* Check the length of the bus-ID. Rely on that the kernel provides
|
|
* a correct bus-ID; alternatively, improve this check and parse and
|
|
* verify each bus-ID part...
|
|
*/
|
|
bus_id_len = strlen(bus_id);
|
|
if (!IN_SET(bus_id_len, 8, 9))
|
|
return -EINVAL;
|
|
|
|
/* Strip leading zeros from the bus id for aesthetic purposes. This
|
|
* keeps the ccw names stable, yet much shorter in general case of
|
|
* bus_id 0.0.0600 -> 600. This is similar to e.g. how PCI domain is
|
|
* not prepended when it is zero. Preserve the last 0 for 0.0.0000.
|
|
*/
|
|
bus_id_start = strspn(bus_id, ".0");
|
|
bus_id += bus_id_start < bus_id_len ? bus_id_start : bus_id_len - 1;
|
|
|
|
/* Store the CCW bus-ID for use as network device name */
|
|
rc = snprintf(names->ccw_busid, sizeof(names->ccw_busid), "c%s", bus_id);
|
|
if (rc >= 0 && rc < (int)sizeof(names->ccw_busid))
|
|
names->type = NET_CCW;
|
|
return 0;
|
|
}
|
|
|
|
static int names_mac(struct udev_device *dev, struct netnames *names) {
|
|
const char *s;
|
|
unsigned int i;
|
|
unsigned int a1, a2, a3, a4, a5, a6;
|
|
|
|
/* check for NET_ADDR_PERM, skip random MAC addresses */
|
|
s = udev_device_get_sysattr_value(dev, "addr_assign_type");
|
|
if (!s)
|
|
return EXIT_FAILURE;
|
|
i = strtoul(s, NULL, 0);
|
|
if (i != 0)
|
|
return 0;
|
|
|
|
s = udev_device_get_sysattr_value(dev, "address");
|
|
if (!s)
|
|
return -ENOENT;
|
|
if (sscanf(s, "%x:%x:%x:%x:%x:%x", &a1, &a2, &a3, &a4, &a5, &a6) != 6)
|
|
return -EINVAL;
|
|
|
|
/* skip empty MAC addresses */
|
|
if (a1 + a2 + a3 + a4 + a5 + a6 == 0)
|
|
return -EINVAL;
|
|
|
|
names->mac[0] = a1;
|
|
names->mac[1] = a2;
|
|
names->mac[2] = a3;
|
|
names->mac[3] = a4;
|
|
names->mac[4] = a5;
|
|
names->mac[5] = a6;
|
|
names->mac_valid = true;
|
|
return 0;
|
|
}
|
|
|
|
/* IEEE Organizationally Unique Identifier vendor string */
|
|
static int ieee_oui(struct udev_device *dev, struct netnames *names, bool test) {
|
|
char str[32];
|
|
|
|
if (!names->mac_valid)
|
|
return -ENOENT;
|
|
/* skip commonly misused 00:00:00 (Xerox) prefix */
|
|
if (memcmp(names->mac, "\0\0\0", 3) == 0)
|
|
return -EINVAL;
|
|
xsprintf(str, "OUI:%02X%02X%02X%02X%02X%02X", names->mac[0],
|
|
names->mac[1], names->mac[2], names->mac[3], names->mac[4],
|
|
names->mac[5]);
|
|
udev_builtin_hwdb_lookup(dev, NULL, str, NULL, test);
|
|
return 0;
|
|
}
|
|
|
|
static int builtin_net_id(struct udev_device *dev, int argc, char *argv[], bool test) {
|
|
const char *s;
|
|
const char *p;
|
|
unsigned int i;
|
|
const char *devtype;
|
|
const char *prefix = "en";
|
|
struct netnames names = {};
|
|
int err;
|
|
|
|
/* handle only ARPHRD_ETHER and ARPHRD_SLIP devices */
|
|
s = udev_device_get_sysattr_value(dev, "type");
|
|
if (!s)
|
|
return EXIT_FAILURE;
|
|
i = strtoul(s, NULL, 0);
|
|
switch (i) {
|
|
case ARPHRD_ETHER:
|
|
prefix = "en";
|
|
break;
|
|
case ARPHRD_SLIP:
|
|
prefix = "sl";
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
/* skip stacked devices, like VLANs, ... */
|
|
s = udev_device_get_sysattr_value(dev, "ifindex");
|
|
if (!s)
|
|
return EXIT_FAILURE;
|
|
p = udev_device_get_sysattr_value(dev, "iflink");
|
|
if (!p)
|
|
return EXIT_FAILURE;
|
|
if (!streq(s, p))
|
|
return 0;
|
|
|
|
devtype = udev_device_get_devtype(dev);
|
|
if (devtype) {
|
|
if (streq("wlan", devtype))
|
|
prefix = "wl";
|
|
else if (streq("wwan", devtype))
|
|
prefix = "ww";
|
|
}
|
|
|
|
err = names_mac(dev, &names);
|
|
if (err >= 0 && names.mac_valid) {
|
|
char str[IFNAMSIZ];
|
|
|
|
xsprintf(str, "%sx%02x%02x%02x%02x%02x%02x", prefix,
|
|
names.mac[0], names.mac[1], names.mac[2],
|
|
names.mac[3], names.mac[4], names.mac[5]);
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_MAC", str);
|
|
|
|
ieee_oui(dev, &names, test);
|
|
}
|
|
|
|
/* get path names for Linux on System z network devices */
|
|
err = names_ccw(dev, &names);
|
|
if (err >= 0 && names.type == NET_CCW) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.ccw_busid) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str);
|
|
goto out;
|
|
}
|
|
|
|
/* get ibmveth/ibmvnic slot-based names. */
|
|
err = names_vio(dev, &names);
|
|
if (err >= 0 && names.type == NET_VIO) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.vio_slot) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str);
|
|
goto out;
|
|
}
|
|
|
|
/* get ACPI path names for ARM64 platform devices */
|
|
err = names_platform(dev, &names, test);
|
|
if (err >= 0 && names.type == NET_PLATFORM) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.platform_path) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str);
|
|
goto out;
|
|
}
|
|
|
|
/* get PCI based path names, we compose only PCI based paths */
|
|
err = names_pci(dev, &names);
|
|
if (err < 0)
|
|
goto out;
|
|
|
|
/* plain PCI device */
|
|
if (names.type == NET_PCI) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (names.pci_onboard[0])
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_onboard) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_ONBOARD", str);
|
|
|
|
if (names.pci_onboard_label)
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_onboard_label) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_LABEL_ONBOARD", str);
|
|
|
|
if (names.pci_path[0])
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_path) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str);
|
|
|
|
if (names.pci_slot[0])
|
|
if (snprintf(str, sizeof(str), "%s%s", prefix, names.pci_slot) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str);
|
|
goto out;
|
|
}
|
|
|
|
/* USB device */
|
|
err = names_usb(dev, &names);
|
|
if (err >= 0 && names.type == NET_USB) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (names.pci_path[0])
|
|
if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_path, names.usb_ports) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str);
|
|
|
|
if (names.pci_slot[0])
|
|
if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_slot, names.usb_ports) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str);
|
|
goto out;
|
|
}
|
|
|
|
/* Broadcom bus */
|
|
err = names_bcma(dev, &names);
|
|
if (err >= 0 && names.type == NET_BCMA) {
|
|
char str[IFNAMSIZ];
|
|
|
|
if (names.pci_path[0])
|
|
if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_path, names.bcma_core) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_PATH", str);
|
|
|
|
if (names.pci_slot[0])
|
|
if (snprintf(str, sizeof(str), "%s%s%s", prefix, names.pci_slot, names.bcma_core) < (int)sizeof(str))
|
|
udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str);
|
|
goto out;
|
|
}
|
|
out:
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
const struct udev_builtin udev_builtin_net_id = {
|
|
.name = "net_id",
|
|
.cmd = builtin_net_id,
|
|
.help = "Network device properties",
|
|
};
|