tree-wide: drop license boilerplate

[thirdparty/systemd.git] / src / udev / udev-builtin-net_id.c

diff --git a/src/udev/udev-builtin-net_id.c b/src/udev/udev-builtin-net_id.c
index 233bdd2646dbb1fc9b6e882e7fb6e7be1505c4d0..dc97ea6b082aa4c0527e390f155b0a8875a83f22 100644 (file)
--- a/src/udev/udev-builtin-net_id.c
+++ b/src/udev/udev-builtin-net_id.c
@@ -3,19 +3,6 @@
   This file is part of systemd.
 
   Copyright 2012 Kay Sievers <kay@vrfy.org>
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
 /*
@@ -299,6 +286,10 @@ static bool is_pci_multifunction(struct udev_device *dev) {
         return false;
 }
 
+static bool is_pci_ari_enabled(struct udev_device *dev) {
+        return !!udev_device_get_sysattr_value(dev, "ari_enabled");
+}
+
 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, hotplug_slot = 0;
@@ -313,6 +304,11 @@ static int dev_pci_slot(struct udev_device *dev, struct netnames *names) {
 
         if (sscanf(udev_device_get_sysname(names->pcidev), "%x:%x:%x.%u", &domain, &bus, &slot, &func) != 4)
                 return -ENOENT;
+        if (is_pci_ari_enabled(names->pcidev))
+                /* ARI devices support up to 256 functions on a single device ("slot"), and interpret the
+                 * traditional 5-bit slot and 3-bit function number as a single 8-bit function number,
+                 * where the slot makes up the upper 5 bits. */
+                func += slot * 8;
 
         /* kernel provided port index for multiple ports on a single PCI function */
         attr = udev_device_get_sysattr_value(dev, "dev_port");