}
static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
- unsigned domain, bus, slot, func, dev_port = 0, hotplug_slot = 0;
+ unsigned type, domain, bus, slot, func, dev_port = 0, hotplug_slot = 0;
size_t l;
char *s;
const char *attr, *port_name;
/* kernel provided port index for multiple ports on a single PCI function */
attr = udev_device_get_sysattr_value(dev, "dev_port");
- if (attr)
+ if (attr) {
dev_port = strtol(attr, NULL, 10);
+ /* With older kernels IP-over-InfiniBand network interfaces sometimes erroneously
+ * provide the port number in the 'dev_id' sysfs attribute instead of 'dev_port',
+ * which thus stays initialized as 0. */
+ if (dev_port == 0) {
+ attr = udev_device_get_sysattr_value(dev, "type");
+ /* The 'type' attribute always exists. */
+ type = strtoul(attr, NULL, 10);
+ if (type == ARPHRD_INFINIBAND) {
+ attr = udev_device_get_sysattr_value(dev, "dev_id");
+ if (attr)
+ dev_port = strtol(attr, NULL, 16);
+ }
+ }
+ }
/* kernel provided front panel port name for multiple port PCI device */
port_name = udev_device_get_sysattr_value(dev, "phys_port_name");