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From 88eb414beca3ab29f40a6e422faa790ddaae2918 Mon Sep 17 00:00:00 2001
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From: Tom Gundersen <teg@jklm.no>
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Date: Wed, 1 Apr 2015 16:51:02 +0200
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Subject: [PATCH] udev: net_id - support multi-port enpo* device names
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I'd argue that having firmware labels for such devices makes
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no sense, but they exist, so make sure we handle them as best
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as we can.
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---
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src/udev/udev-builtin-net_id.c | 33 +++++++++++++++++++++++++--------
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1 file changed, 25 insertions(+), 8 deletions(-)
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diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
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index 99caa0a..6a5ada6 100644
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--- a/src/udev/udev-builtin-net_id.c
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+++ b/src/udev/udev-builtin-net_id.c
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@@ -35,7 +35,7 @@
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* Type of names:
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* b<number> -- BCMA bus core number
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* ccw<name> -- CCW bus group name
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- * o<index> -- on-board device index number
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+ * o<index>[d<dev_port>] -- on-board device index number
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* s<slot>[f<function>][d<dev_port>] -- hotplug slot index number
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* x<MAC> -- MAC address
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* [P<domain>]p<bus>s<slot>[f<function>][d<dev_id>/<dev_port>]
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@@ -128,22 +128,39 @@ struct netnames {
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/* retrieve on-board index number and label from firmware */
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static int dev_pci_onboard(struct udev_device *dev, struct netnames *names) {
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- const char *index;
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+ unsigned dev_port = 0;
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+ size_t l;
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+ char *s;
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+ const char *attr;
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int idx;
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/* ACPI _DSM -- device specific method for naming a PCI or PCI Express device */
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- index = udev_device_get_sysattr_value(names->pcidev, "acpi_index");
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+ attr = udev_device_get_sysattr_value(names->pcidev, "acpi_index");
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/* SMBIOS type 41 -- Onboard Devices Extended Information */
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- if (!index)
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- index = udev_device_get_sysattr_value(names->pcidev, "index");
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- if (!index)
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+ if (!attr)
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+ attr = udev_device_get_sysattr_value(names->pcidev, "index");
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+ if (!attr)
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return -ENOENT;
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- idx = strtoul(index, NULL, 0);
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+
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+ idx = strtoul(attr, NULL, 0);
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if (idx <= 0)
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return -EINVAL;
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- snprintf(names->pci_onboard, sizeof(names->pci_onboard), "o%d", idx);
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+
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+ /* kernel provided multi-device index */
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+ attr = udev_device_get_sysattr_value(dev, "dev_port");
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+ if (attr)
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+ dev_port = strtol(attr, NULL, 10);
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+
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+ s = names->pci_onboard;
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+ l = sizeof(names->pci_onboard);
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+ l = strpcpyf(&s, l, "o%d", idx);
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+ if (dev_port > 0)
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+ l = strpcpyf(&s, l, "d%d", dev_port);
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+ if (l == 0)
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+ names->pci_onboard[0] = '\0';
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names->pci_onboard_label = udev_device_get_sysattr_value(names->pcidev, "label");
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+
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return 0;
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}
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