23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <stdio.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <stdlib.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <stdarg.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <unistd.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <fcntl.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <string.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <errno.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <net/if.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <net/if_arp.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include <linux/pci_regs.h>

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include "udev.h"

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen#include "fileio.h"

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenenum netname_type{

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_UNDEF,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_PCI,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_USB,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_BCMA,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_VIRTIO,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen NET_CCWGROUP,

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen};

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstruct netnames {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen enum netname_type type;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen uint8_t mac[6];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen bool mac_valid;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev_device *pcidev;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char pci_slot[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char pci_path[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char pci_onboard[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *pci_onboard_label;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char usb_ports[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char bcma_core[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char ccw_group[IFNAMSIZ];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen};

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int dev_pci_onboard(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen unsigned dev_port = 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen size_t l;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *s;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *attr;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen int idx;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* ACPI _DSM -- device specific method for naming a PCI or PCI Express device */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen attr = udev_device_get_sysattr_value(names->pcidev, "acpi_index");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* SMBIOS type 41 -- Onboard Devices Extended Information */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!attr)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen attr = udev_device_get_sysattr_value(names->pcidev, "index");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!attr)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen idx = strtoul(attr, NULL, 0);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (idx <= 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* kernel provided port index for multiple ports on a single PCI function */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen attr = udev_device_get_sysattr_value(dev, "dev_port");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (attr)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen dev_port = strtol(attr, NULL, 10);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = names->pci_onboard;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = sizeof(names->pci_onboard);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "o%d", idx);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (dev_port > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "d%d", dev_port);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (l == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pci_onboard[0] = '\0';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pci_onboard_label = udev_device_get_sysattr_value(names->pcidev, "label");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic bool is_pci_multifunction(struct udev_device *dev) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen _cleanup_close_ int fd = -1;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *filename;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen uint8_t config[64];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen filename = strjoina(udev_device_get_syspath(dev), "/config");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen fd = open(filename, O_RDONLY | O_CLOEXEC);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (fd < 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return false;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (read(fd, &config, sizeof(config)) != sizeof(config))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return false;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* bit 0-6 header type, bit 7 multi/single function device */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if ((config[PCI_HEADER_TYPE] & 0x80) != 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return true;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return false;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int dev_pci_slot(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev *udev = udev_device_get_udev(names->pcidev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen unsigned domain, bus, slot, func, dev_port = 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen size_t l;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *s;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *attr;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev_device *pci = NULL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char slots[256], str[256];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen _cleanup_closedir_ DIR *dir = NULL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct dirent *dent;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen int hotplug_slot = 0, err = 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (sscanf(udev_device_get_sysname(names->pcidev), "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* kernel provided port index for multiple ports on a single PCI function */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen attr = udev_device_get_sysattr_value(dev, "dev_port");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (attr)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen dev_port = strtol(attr, NULL, 10);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* compose a name based on the raw kernel's PCI bus, slot numbers */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = names->pci_path;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = sizeof(names->pci_path);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (domain > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "P%u", domain);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "p%us%u", bus, slot);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (func > 0 || is_pci_multifunction(names->pcidev))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "f%u", func);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (dev_port > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "d%u", dev_port);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (l == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pci_path[0] = '\0';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* ACPI _SUN -- slot user number */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen pci = udev_device_new_from_subsystem_sysname(udev, "subsystem", "pci");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!pci) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen err = -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen goto out;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen snprintf(slots, sizeof(slots), "%s/slots", udev_device_get_syspath(pci));

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen dir = opendir(slots);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!dir) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen err = -errno;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen goto out;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen int i;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *rest;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *address;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (dent->d_name[0] == '.')

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen continue;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen i = strtol(dent->d_name, &rest, 10);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (rest[0] != '\0')

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen continue;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (i < 1)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen continue;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen snprintf(str, sizeof(str), "%s/%s/address", slots, dent->d_name);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (read_one_line_file(str, &address) >= 0) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* match slot address with device by stripping the function */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (strneq(address, udev_device_get_sysname(names->pcidev), strlen(address)))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen hotplug_slot = i;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen free(address);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (hotplug_slot > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen break;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (hotplug_slot > 0) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = names->pci_slot;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = sizeof(names->pci_slot);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (domain > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "P%d", domain);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "s%d", hotplug_slot);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (func > 0 || is_pci_multifunction(names->pcidev))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "f%d", func);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (dev_port > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyf(&s, l, "d%d", dev_port);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (l == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pci_slot[0] = '\0';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

52efd56a6369e19c2400a42981a197cd2eef924aLennart Poetteringout:

52efd56a6369e19c2400a42981a197cd2eef924aLennart Poettering udev_device_unref(pci);

52efd56a6369e19c2400a42981a197cd2eef924aLennart Poettering return err;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

52efd56a6369e19c2400a42981a197cd2eef924aLennart Poettering

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int names_pci(struct udev_device *dev, struct netnames *names) {

52efd56a6369e19c2400a42981a197cd2eef924aLennart Poettering struct udev_device *parent;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen parent = udev_device_get_parent(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* there can only ever be one virtio bus per parent device, so we can

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen while (parent && streq_ptr("virtio", udev_device_get_subsystem(parent)))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen parent = udev_device_get_parent(parent);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!parent)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* check if our direct parent is a PCI device with no other bus in-between */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (streq_ptr("pci", udev_device_get_subsystem(parent))) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->type = NET_PCI;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pcidev = parent;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen } else {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->pcidev = udev_device_get_parent_with_subsystem_devtype(dev, "pci", NULL);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!names->pcidev)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen }

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen dev_pci_onboard(dev, names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen dev_pci_slot(dev, names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int names_usb(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev_device *usbdev;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char name[256];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *ports;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *config;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *interf;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen size_t l;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen char *s;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

7e518afab9fb55b8052f68888210927259275560Thomas Hindoe Paaboel Andersen usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!usbdev)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* get USB port number chain, configuration, interface */

1fa2f38f0f011010bf57522b42fcc168856a7003Zbigniew Jędrzejewski-Szmek strscpy(name, sizeof(name), udev_device_get_sysname(usbdev));

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = strchr(name, '-');

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!s)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen ports = s+1;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = strchr(ports, ':');

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!s)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s[0] = '\0';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen config = s+1;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = strchr(config, '.');

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!s)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s[0] = '\0';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen interf = s+1;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* prefix every port number in the chain with "u" */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = ports;

f0c4b1c3fd827b429ba36aa45fd39e0a023cbf2cTom Gundersen while ((s = strchr(s, '.')))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s[0] = 'u';

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = names->usb_ports;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyl(&s, sizeof(names->usb_ports), "u", ports, NULL);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* append USB config number, suppress the common config == 1 */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!streq(config, "1"))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyl(&s, sizeof(names->usb_ports), "c", config, NULL);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* append USB interface number, suppress the interface == 0 */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!streq(interf, "0"))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen l = strpcpyl(&s, sizeof(names->usb_ports), "i", interf, NULL);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (l == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENAMETOOLONG;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->type = NET_USB;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int names_bcma(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev_device *bcmadev;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen unsigned int core;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen bcmadev = udev_device_get_parent_with_subsystem_devtype(dev, "bcma", NULL);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!bcmadev)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* bus num:core num */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (sscanf(udev_device_get_sysname(bcmadev), "bcma%*u:%u", &core) != 1)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* suppress the common core == 0 */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (core > 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen snprintf(names->bcma_core, sizeof(names->bcma_core), "b%u", core);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->type = NET_BCMA;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int names_ccw(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen struct udev_device *cdev;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *bus_id;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen size_t bus_id_len;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen int rc;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen assert(names);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* Retrieve the associated CCW device */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen cdev = udev_device_get_parent(dev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!cdev)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* Network devices are always grouped CCW devices */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!streq_ptr("ccwgroup", udev_device_get_subsystem(cdev)))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* Retrieve bus-ID of the grouped CCW device. The bus-ID uniquely

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen bus_id = udev_device_get_sysname(cdev);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!bus_id)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* Check the length of the bus-ID. Rely on that the kernel provides

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen bus_id_len = strlen(bus_id);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!bus_id_len || bus_id_len < 8 || bus_id_len > 9)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* Store the CCW bus-ID for use as network device name */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen rc = snprintf(names->ccw_group, sizeof(names->ccw_group), "ccw%s", bus_id);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (rc >= 0 && rc < (int)sizeof(names->ccw_group))

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->type = NET_CCWGROUP;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int names_mac(struct udev_device *dev, struct netnames *names) {

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen const char *s;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen unsigned int i;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen unsigned int a1, a2, a3, a4, a5, a6;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* check for NET_ADDR_PERM, skip random MAC addresses */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = udev_device_get_sysattr_value(dev, "addr_assign_type");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!s)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return EXIT_FAILURE;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen i = strtoul(s, NULL, 0);

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (i != 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen s = udev_device_get_sysattr_value(dev, "address");

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!s)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (sscanf(s, "%x:%x:%x:%x:%x:%x", &a1, &a2, &a3, &a4, &a5, &a6) != 6)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* skip empty MAC addresses */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (a1 + a2 + a3 + a4 + a5 + a6 == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->mac[0] = a1;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->mac[1] = a2;

8927b1dad2d4a7330174cb924090b4635a2547fbDavid Herrmann names->mac[2] = a3;

8927b1dad2d4a7330174cb924090b4635a2547fbDavid Herrmann names->mac[3] = a4;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->mac[4] = a5;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->mac[5] = a6;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen names->mac_valid = true;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return 0;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen}

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersenstatic int ieee_oui(struct udev_device *dev, struct netnames *names, bool test) {

8927b1dad2d4a7330174cb924090b4635a2547fbDavid Herrmann char str[32];

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (!names->mac_valid)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -ENOENT;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen /* skip commonly misused 00:00:00 (Xerox) prefix */

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen if (memcmp(names->mac, "\0\0\0", 3) == 0)

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen return -EINVAL;

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen snprintf(str, sizeof(str), "OUI:%02X%02X%02X%02X%02X%02X",

23fbe14f503c1e98292efc4ba1238adb7dc38d80Tom Gundersen 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];

snprintf(str, sizeof(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_CCWGROUP) {

char str[IFNAMSIZ];

if (snprintf(str, sizeof(str), "%s%s", prefix, names.ccw_group) < (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",

};