2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * $Id: ipoib_vlan.c 1349 2004-12-16 21:09:43Z roland $
35 #include <linux/version.h>
36 #include <linux/module.h>
38 #include <linux/init.h>
39 #include <linux/slab.h>
40 #include <linux/seq_file.h>
42 #include <asm/uaccess.h>
46 static ssize_t show_parent(struct class_device *class_dev, char *buf)
48 struct net_device *dev =
49 container_of(class_dev, struct net_device, class_dev);
50 struct ipoib_dev_priv *priv = netdev_priv(dev);
52 return sprintf(buf, "%s\n", priv->parent->name);
54 static CLASS_DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
56 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
58 struct ipoib_dev_priv *ppriv, *priv;
59 char intf_name[IFNAMSIZ];
62 if (!capable(CAP_NET_ADMIN))
65 ppriv = netdev_priv(pdev);
67 down(&ppriv->vlan_mutex);
70 * First ensure this isn't a duplicate. We check the parent device and
71 * then all of the child interfaces to make sure the Pkey doesn't match.
73 if (ppriv->pkey == pkey) {
78 list_for_each_entry(priv, &ppriv->child_intfs, list) {
79 if (priv->pkey == pkey) {
85 snprintf(intf_name, sizeof intf_name, "%s.%04x",
86 ppriv->dev->name, pkey);
87 priv = ipoib_intf_alloc(intf_name);
93 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
97 memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
98 priv->dev->broadcast[8] = pkey >> 8;
99 priv->dev->broadcast[9] = pkey & 0xff;
101 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
103 ipoib_warn(ppriv, "failed to initialize subinterface: "
104 "device %s, port %d",
105 ppriv->ca->name, ppriv->port);
106 goto device_init_failed;
109 result = register_netdev(priv->dev);
111 ipoib_warn(priv, "failed to initialize; error %i", result);
112 goto register_failed;
115 priv->parent = ppriv->dev;
117 if (ipoib_create_debug_file(priv->dev))
120 if (ipoib_add_pkey_attr(priv->dev))
123 if (class_device_create_file(&priv->dev->class_dev,
124 &class_device_attr_parent))
127 list_add_tail(&priv->list, &ppriv->child_intfs);
129 up(&ppriv->vlan_mutex);
134 ipoib_delete_debug_file(priv->dev);
137 unregister_netdev(priv->dev);
140 ipoib_dev_cleanup(priv->dev);
143 free_netdev(priv->dev);
146 up(&ppriv->vlan_mutex);
150 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
152 struct ipoib_dev_priv *ppriv, *priv, *tpriv;
155 if (!capable(CAP_NET_ADMIN))
158 ppriv = netdev_priv(pdev);
160 down(&ppriv->vlan_mutex);
161 list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
162 if (priv->pkey == pkey) {
163 unregister_netdev(priv->dev);
164 ipoib_dev_cleanup(priv->dev);
166 list_del(&priv->list);
174 up(&ppriv->vlan_mutex);