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udev: net_id - support multi-port enpo* device names

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I'd argue that having firmware labels for such devices makes
no sense, but they exist, so make sure we handle them as best
as we can.

Signed-off-by: Anthony G. Basile <blueness@gentoo.org>
This commit is contained in:
Tom Gundersen 2015-04-01 16:51:02 +02:00 committed by Anthony G. Basile
parent 9315261b19
commit 2b14e318ed
1 changed files with 25 additions and 8 deletions
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33
src/udev/udev-builtin-net_id.c
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@ -35,7 +35,7 @@
* Type of names:
* b<number> -- BCMA bus core number
* ccw<name> -- CCW bus group name
* o<index> -- on-board device index number
* o<index>[d<dev_port>] -- on-board device index number
* s<slot>[f<function>][d<dev_port>] -- hotplug slot index number
* x<MAC> -- MAC address
* [P<domain>]p<bus>s<slot>[f<function>][d<dev_port>]
@ -128,22 +128,39 @@ struct netnames {
/* retrieve on-board index number and label from firmware */
static int dev_pci_onboard(struct udev_device *dev, struct netnames *names) {
const char *index;
unsigned dev_port = 0;
size_t l;
char *s;
const char *attr;
int idx;
/* ACPI _DSM -- device specific method for naming a PCI or PCI Express device */
index = udev_device_get_sysattr_value(names->pcidev, "acpi_index");
attr = udev_device_get_sysattr_value(names->pcidev, "acpi_index");
/* SMBIOS type 41 -- Onboard Devices Extended Information */
if (!index)
index = udev_device_get_sysattr_value(names->pcidev, "index");
if (!index)
if (!attr)
attr = udev_device_get_sysattr_value(names->pcidev, "index");
if (!attr)
return -ENOENT;
idx = strtoul(index, NULL, 0);
idx = strtoul(attr, NULL, 0);
if (idx <= 0)
return -EINVAL;
snprintf(names->pci_onboard, sizeof(names->pci_onboard), "o%d", idx);
/* kernel provided multi-device index */
attr = udev_device_get_sysattr_value(dev, "dev_port");
if (attr)
dev_port = strtol(attr, NULL, 10);
s = names->pci_onboard;
l = sizeof(names->pci_onboard);
l = strpcpyf(&s, l, "o%d", idx);
if (dev_port > 0)
l = strpcpyf(&s, l, "d%d", dev_port);
if (l == 0)
names->pci_onboard[0] = '\0';
names->pci_onboard_label = udev_device_get_sysattr_value(names->pcidev, "label");
return 0;
}