blob: 94b8ea812feff35bcf3bdee04ee85b2df1937f80 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (c) 2004 Topspin Communications. All rights reserved.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 *
32 * $Id: ipoib_vlan.c 1349 2004-12-16 21:09:43Z roland $
33 */
34
35#include <linux/version.h>
36#include <linux/module.h>
37
38#include <linux/init.h>
39#include <linux/slab.h>
40#include <linux/seq_file.h>
41
42#include <asm/uaccess.h>
43
44#include "ipoib.h"
45
46static ssize_t show_parent(struct class_device *class_dev, char *buf)
47{
48 struct net_device *dev =
49 container_of(class_dev, struct net_device, class_dev);
50 struct ipoib_dev_priv *priv = netdev_priv(dev);
51
52 return sprintf(buf, "%s\n", priv->parent->name);
53}
54static CLASS_DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
55
56int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
57{
58 struct ipoib_dev_priv *ppriv, *priv;
59 char intf_name[IFNAMSIZ];
60 int result;
61
62 if (!capable(CAP_NET_ADMIN))
63 return -EPERM;
64
65 ppriv = netdev_priv(pdev);
66
67 down(&ppriv->vlan_mutex);
68
69 /*
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.
72 */
73 if (ppriv->pkey == pkey) {
74 result = -ENOTUNIQ;
75 goto err;
76 }
77
78 list_for_each_entry(priv, &ppriv->child_intfs, list) {
79 if (priv->pkey == pkey) {
80 result = -ENOTUNIQ;
81 goto err;
82 }
83 }
84
85 snprintf(intf_name, sizeof intf_name, "%s.%04x",
86 ppriv->dev->name, pkey);
87 priv = ipoib_intf_alloc(intf_name);
88 if (!priv) {
89 result = -ENOMEM;
90 goto err;
91 }
92
93 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
94
95 priv->pkey = pkey;
96
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;
100
101 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
102 if (result < 0) {
103 ipoib_warn(ppriv, "failed to initialize subinterface: "
104 "device %s, port %d",
105 ppriv->ca->name, ppriv->port);
106 goto device_init_failed;
107 }
108
109 result = register_netdev(priv->dev);
110 if (result) {
111 ipoib_warn(priv, "failed to initialize; error %i", result);
112 goto register_failed;
113 }
114
115 priv->parent = ppriv->dev;
116
117 if (ipoib_create_debug_file(priv->dev))
118 goto debug_failed;
119
120 if (ipoib_add_pkey_attr(priv->dev))
121 goto sysfs_failed;
122
123 if (class_device_create_file(&priv->dev->class_dev,
124 &class_device_attr_parent))
125 goto sysfs_failed;
126
127 list_add_tail(&priv->list, &ppriv->child_intfs);
128
129 up(&ppriv->vlan_mutex);
130
131 return 0;
132
133sysfs_failed:
134 ipoib_delete_debug_file(priv->dev);
135
136debug_failed:
137 unregister_netdev(priv->dev);
138
139register_failed:
140 ipoib_dev_cleanup(priv->dev);
141
142device_init_failed:
143 free_netdev(priv->dev);
144
145err:
146 up(&ppriv->vlan_mutex);
147 return result;
148}
149
150int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
151{
152 struct ipoib_dev_priv *ppriv, *priv, *tpriv;
153 int ret = -ENOENT;
154
155 if (!capable(CAP_NET_ADMIN))
156 return -EPERM;
157
158 ppriv = netdev_priv(pdev);
159
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);
165
166 list_del(&priv->list);
167
168 kfree(priv);
169
170 ret = 0;
171 break;
172 }
173 }
174 up(&ppriv->vlan_mutex);
175
176 return ret;
177}