Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / drivers / infiniband / ulp / ipoib / ipoib_vlan.c
blob293f5b892e3f5f20d33ababa2a50f1688254f891
1 /*
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
12 * conditions are met:
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
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
30 * SOFTWARE.
32 * $Id: ipoib_vlan.c 1349 2004-12-16 21:09:43Z roland $
35 #include <linux/module.h>
37 #include <linux/init.h>
38 #include <linux/slab.h>
39 #include <linux/seq_file.h>
41 #include <asm/uaccess.h>
43 #include "ipoib.h"
45 static ssize_t show_parent(struct device *d, struct device_attribute *attr,
46 char *buf)
48 struct net_device *dev = to_net_dev(d);
49 struct ipoib_dev_priv *priv = netdev_priv(dev);
51 return sprintf(buf, "%s\n", priv->parent->name);
53 static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
55 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
57 struct ipoib_dev_priv *ppriv, *priv;
58 char intf_name[IFNAMSIZ];
59 int result;
61 if (!capable(CAP_NET_ADMIN))
62 return -EPERM;
64 ppriv = netdev_priv(pdev);
66 mutex_lock(&ppriv->vlan_mutex);
69 * First ensure this isn't a duplicate. We check the parent device and
70 * then all of the child interfaces to make sure the Pkey doesn't match.
72 if (ppriv->pkey == pkey) {
73 result = -ENOTUNIQ;
74 goto err;
77 list_for_each_entry(priv, &ppriv->child_intfs, list) {
78 if (priv->pkey == pkey) {
79 result = -ENOTUNIQ;
80 goto err;
84 snprintf(intf_name, sizeof intf_name, "%s.%04x",
85 ppriv->dev->name, pkey);
86 priv = ipoib_intf_alloc(intf_name);
87 if (!priv) {
88 result = -ENOMEM;
89 goto err;
92 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
94 priv->pkey = pkey;
96 memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
97 priv->dev->broadcast[8] = pkey >> 8;
98 priv->dev->broadcast[9] = pkey & 0xff;
100 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
101 if (result < 0) {
102 ipoib_warn(ppriv, "failed to initialize subinterface: "
103 "device %s, port %d",
104 ppriv->ca->name, ppriv->port);
105 goto device_init_failed;
108 result = register_netdev(priv->dev);
109 if (result) {
110 ipoib_warn(priv, "failed to initialize; error %i", result);
111 goto register_failed;
114 priv->parent = ppriv->dev;
116 ipoib_create_debug_files(priv->dev);
118 if (ipoib_cm_add_mode_attr(priv->dev))
119 goto sysfs_failed;
120 if (ipoib_add_pkey_attr(priv->dev))
121 goto sysfs_failed;
122 if (ipoib_add_umcast_attr(priv->dev))
123 goto sysfs_failed;
125 if (device_create_file(&priv->dev->dev, &dev_attr_parent))
126 goto sysfs_failed;
128 list_add_tail(&priv->list, &ppriv->child_intfs);
130 mutex_unlock(&ppriv->vlan_mutex);
132 return 0;
134 sysfs_failed:
135 ipoib_delete_debug_files(priv->dev);
136 unregister_netdev(priv->dev);
138 register_failed:
139 ipoib_dev_cleanup(priv->dev);
141 device_init_failed:
142 free_netdev(priv->dev);
144 err:
145 mutex_unlock(&ppriv->vlan_mutex);
146 return result;
149 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
151 struct ipoib_dev_priv *ppriv, *priv, *tpriv;
152 int ret = -ENOENT;
154 if (!capable(CAP_NET_ADMIN))
155 return -EPERM;
157 ppriv = netdev_priv(pdev);
159 mutex_lock(&ppriv->vlan_mutex);
160 list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
161 if (priv->pkey == pkey) {
162 unregister_netdev(priv->dev);
163 ipoib_dev_cleanup(priv->dev);
164 list_del(&priv->list);
165 free_netdev(priv->dev);
167 ret = 0;
168 break;
171 mutex_unlock(&ppriv->vlan_mutex);
173 return ret;