From 74b66951fcd54e6ab51023f60cc021fe355be1a8 Mon Sep 17 00:00:00 2001

From: Tom Gundersen <teg@jklm.no>

Date: Sat, 25 Oct 2014 17:10:11 +0200

Subject: [PATCH] udev: net_id - correctly name netdevs based on dev_port when

 set

Upstream, dev_id was replaced by dev_port, and the same happened for some kernel

drivers. This logic is not in the RHEL7 kernel, except for one new driver which

uses dev_port, but never used dev_id in the past.

To give proper names to these devices, fall back to using dev_port when dev_id

is not set. This does not affect any existing drivers.

(rhel only)

Resolves: #1155996

Conflicts:

	src/udev/udev-builtin-net_id.c

Conflicts:

	src/udev/udev-builtin-net_id.c

---

 src/udev/udev-builtin-net_id.c | 26 ++++++++++++++++----------

 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c

index 37ff1b8..99caa0a 100644

--- a/src/udev/udev-builtin-net_id.c

+++ b/src/udev/udev-builtin-net_id.c

@@ -38,7 +38,7 @@

  *   o<index>                              -- 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>]

+ *   [P<domain>]p<bus>s<slot>[f<function>][d<dev_id>/<dev_port>]

  *                                         -- PCI geographical location

  *   [P<domain>]p<bus>s<slot>[f<function>][u<port>][..][c<config>][i<interface>]

  *                                         -- USB port number chain

@@ -169,7 +169,7 @@ static bool is_pci_multifunction(struct udev_device *dev) {

 static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {

         struct udev *udev = udev_device_get_udev(names->pcidev);

-        unsigned domain, bus, slot, func, dev_port = 0;

+        unsigned domain, bus, slot, func, dev_id = 0;

         size_t l;

         char *s;

         const char *attr;

@@ -183,9 +183,15 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {

                 return -ENOENT;

         /* kernel provided multi-device index */

-        attr = udev_device_get_sysattr_value(dev, "dev_port");

-        if (attr)

-                dev_port = strtol(attr, NULL, 10);

+        attr = udev_device_get_sysattr_value(dev, "dev_id");

+        if (attr) {

+                dev_id = strtol(attr, NULL, 16);

+                if (dev_id == 0) {

+                        attr = udev_device_get_sysattr_value(dev, "dev_port");

+                        if (attr)

+                                dev_id = strtol(attr, NULL, 16);

+                }

+        }

         /* compose a name based on the raw kernel's PCI bus, slot numbers */

         s = names->pci_path;

@@ -194,9 +200,9 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {

                 l = strpcpyf(&s, l, "P%u", domain);

         l = strpcpyf(&s, l, "p%us%u", bus, slot);

         if (func > 0 || is_pci_multifunction(names->pcidev))

-                l = strpcpyf(&s, l, "f%u", func);

-        if (dev_port > 0)

-                l = strpcpyf(&s, l, "d%u", dev_port);

+                l = strpcpyf(&s, l, "f%d", func);

+        if (dev_id > 0)

+                l = strpcpyf(&s, l, "d%d", dev_id);

         if (l == 0)

                 names->pci_path[0] = '\0';

@@ -245,8 +251,8 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {

                 l = strpcpyf(&s, l, "s%d", hotplug_slot);

                 if (func > 0 || is_pci_multifunction(names->pcidev))

                         l = strpcpyf(&s, l, "f%d", func);

-                if (dev_port > 0)

-                        l = strpcpyf(&s, l, "d%d", dev_port);

+                if (dev_id > 0)

+                        l = strpcpyf(&s, l, "d%d", dev_id);

                 if (l == 0)

                         names->pci_path[0] = '\0';

         }