*
* Two character prefixes based on the type of interface:
* en -- ethernet
+ * sl -- serial line IP (slip)
* wl -- wlan
* ww -- wwan
*
* Type of names:
+ * b<number> -- BCMA bus core number
+ * ccw<name> -- CCW bus group name
* o<index> -- on-board device index number
* s<slot>[f<function>][d<dev_id>] -- hotplug slot index number
* x<MAC> -- MAC address
#include <string.h>
#include <errno.h>
#include <net/if.h>
+#include <net/if_arp.h>
#include <linux/pci_regs.h>
#include "udev.h"
NET_PCI,
NET_USB,
NET_BCMA,
+ NET_VIRTIO,
+ NET_CCWGROUP,
};
struct netnames {
const char *pci_onboard_label;
char usb_ports[IFNAMSIZ];
-
char bcma_core[IFNAMSIZ];
+ char ccw_group[IFNAMSIZ];
};
/* retrieve on-board index number and label from firmware */
if ((config[PCI_HEADER_TYPE] & 0x80) != 0)
multi = true;
out:
- if(f)
+ if (f)
fclose(f);
return multi;
}
static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
struct udev *udev = udev_device_get_udev(names->pcidev);
- unsigned int domain;
- unsigned int bus;
- unsigned int slot;
- unsigned int func;
- unsigned int dev_id = 0;
+ unsigned domain, bus, slot, func, dev_id = 0;
size_t l;
char *s;
const char *attr;
struct udev_device *pci = NULL;
- char slots[256];
- DIR *dir;
+ char slots[256], str[256];
+ _cleanup_closedir_ DIR *dir = NULL;
struct dirent *dent;
- char str[256];
- int hotplug_slot = 0;
- int err = 0;
+ int hotplug_slot = 0, err = 0;
- if (sscanf(udev_device_get_sysname(names->pcidev), "%x:%x:%x.%d", &domain, &bus, &slot, &func) != 4)
+ if (sscanf(udev_device_get_sysname(names->pcidev), "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4)
return -ENOENT;
/* kernel provided multi-device index */
if (hotplug_slot > 0)
break;
}
- closedir(dir);
if (hotplug_slot > 0) {
s = names->pci_slot;
return -ENOENT;
/* bus num:core num */
- if (sscanf(udev_device_get_sysname(bcmadev), "bcma%*d:%d", &core) != 1)
+ if (sscanf(udev_device_get_sysname(bcmadev), "bcma%*u:%u", &core) != 1)
return -EINVAL;
/* suppress the common core == 0 */
if (core > 0)
- snprintf(names->bcma_core, sizeof(names->bcma_core), "b%d", core);
+ snprintf(names->bcma_core, sizeof(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;
+ size_t bus_id_len;
+ int rc;
+
+ /* Retrieve the associated CCW device */
+ cdev = udev_device_get_parent(dev);
+ if (!cdev)
+ return -ENOENT;
+
+ /* Network devices are always grouped CCW devices */
+ if (!streq_ptr("ccwgroup", udev_device_get_subsystem(cdev)))
+ return -ENOENT;
+
+ /* Retrieve bus-ID of the grouped 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 (!bus_id_len || bus_id_len < 8 || bus_id_len > 9)
+ return -EINVAL;
+
+ /* Store the CCW bus-ID for use as network device name */
+ rc = snprintf(names->ccw_group, sizeof(names->ccw_group), "ccw%s", bus_id);
+ if (rc >= 0 && rc < (int)sizeof(names->ccw_group))
+ names->type = NET_CCWGROUP;
+ return 0;
+}
+
static int names_mac(struct udev_device *dev, struct netnames *names) {
const char *s;
unsigned int i;
snprintf(str, sizeof(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, str, NULL, test);
+ udev_builtin_hwdb_lookup(dev, NULL, str, NULL, test);
return 0;
}
struct netnames names = {};
int err;
- /* handle only ARPHRD_ETHER devices */
+ /* 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);
- if (i != 1)
+ 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");
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)
udev_builtin_add_property(dev, test, "ID_NET_NAME_SLOT", str);
goto out;
}
-
out:
return EXIT_SUCCESS;
}
~ianmdlvl / elogind.git / blobdiff