* - physical/geographical location of the hardware
* - the interface's MAC address
*
+ * http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames
+ *
* Two character prefixes based on the type of interface:
* en -- ethernet
* wl -- wlan
#include <linux/pci_regs.h>
#include "udev.h"
+#include "fileio.h"
enum netname_type{
NET_UNDEF,
NET_PCI,
NET_USB,
+ NET_BCMA,
};
struct netnames {
char pci_onboard[IFNAMSIZ];
const char *pci_onboard_label;
- struct udev_device *usbdev;
char usb_ports[IFNAMSIZ];
+
+ char bcma_core[IFNAMSIZ];
};
/* retrieve on-board index number and label from firmware */
snprintf(str, sizeof(str), "%s/%s/address", slots, dent->d_name);
if (read_one_line_file(str, &address) >= 0) {
/* match slot address with device by stripping the function */
- if (strncmp(address, udev_device_get_sysname(names->pcidev), strlen(address)) == 0)
+ if (strneq(address, udev_device_get_sysname(names->pcidev), strlen(address)))
hotplug_slot = i;
free(address);
}
if (!parent)
return -ENOENT;
/* check if our direct parent is a PCI device with no other bus in-between */
- if (streq("pci", udev_device_get_subsystem(parent))) {
+ if (streq_ptr("pci", udev_device_get_subsystem(parent))) {
names->type = NET_PCI;
names->pcidev = parent;
} else {
}
static int names_usb(struct udev_device *dev, struct netnames *names) {
+ struct udev_device *usbdev;
char name[256];
char *ports;
char *config;
size_t l;
char *s;
- names->usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");
- if (!names->usbdev)
+ usbdev = udev_device_get_parent_with_subsystem_devtype(dev, "usb", "usb_interface");
+ if (!usbdev)
return -ENOENT;
/* get USB port number chain, configuration, interface */
- strscpy(name, sizeof(name), udev_device_get_sysname(names->usbdev));
+ strscpy(name, sizeof(name), udev_device_get_sysname(usbdev));
s = strchr(name, '-');
if (!s)
return -EINVAL;
return 0;
}
+static int names_bcma(struct udev_device *dev, struct netnames *names) {
+ struct udev_device *bcmadev;
+ unsigned int core;
+
+ 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%*d:%d", &core) != 1)
+ return -EINVAL;
+ /* suppress the common core == 0 */
+ if (core > 0)
+ snprintf(names->bcma_core, sizeof(names->bcma_core), "b%d", core);
+
+ names->type = NET_BCMA;
+ return 0;
+}
+
static int names_mac(struct udev_device *dev, struct netnames *names) {
const char *s;
unsigned int i;
unsigned int i;
const char *devtype;
const char *prefix = "en";
- struct netnames names;
+ struct netnames names = {};
int err;
/* handle only ARPHRD_ETHER devices */
p = udev_device_get_sysattr_value(dev, "iflink");
if (!p)
return EXIT_FAILURE;
- if (strcmp(s, p) != 0)
+ if (!streq(s, p))
return 0;
devtype = udev_device_get_devtype(dev);
prefix = "ww";
}
- zero(names);
err = names_mac(dev, &names);
if (err >= 0 && names.mac_valid) {
char str[IFNAMSIZ];
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;
}