lib/vlandev.h

   1 /*
   2  * Copyright (c) 2011 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #ifndef VLANDEV_H
  18 #define VLANDEV_H 1
  19
  20 #include "hmap.h"
  21
  22 /* Linux VLAN device support (e.g. "eth0.10" for VLAN 10.)
  23  *
  24  * This is deprecated.  It is only for compatibility with broken device
  25  * drivers in old versions of Linux that do not properly support VLANs when
  26  * VLAN devices are not used.  When broken device drivers are no longer in
  27  * widespread use, we will delete these interfaces. */
  28
  29 /* A VLAN device (e.g. "eth0.10" for VLAN 10 on eth0). */
  30 struct vlan_dev {
  31     struct vlan_real_dev *real_dev; /* Parent, e.g. "eth0". */
  32     struct hmap_node hmap_node;     /* In vlan_real_dev's "vlan_devs" map. */
  33     char *name;                     /* VLAN device name, e.g. "eth0.10". */
  34     int vid;                        /* VLAN ID, e.g. 10. */
  35 };
  36
  37 /* A device that has VLAN devices broken out of it. */
  38 struct vlan_real_dev {
  39     char *name;                 /* Name, e.g. "eth0". */
  40     struct hmap vlan_devs;      /* All child VLAN devices, hashed by VID. */
  41 };
  42
  43 int vlandev_add(const char *real_dev, int vid);
  44 int vlandev_del(const char *vlan_dev);
  45
  46 int vlandev_refresh(void);
  47 struct shash *vlandev_get_real_devs(void);
  48 const char *vlandev_get_name(const char *real_dev_name, int vid);
  49
  50 #endif /* vlandev.h */