x86/xen: resume timer irqs early
[linux/fpc-iii.git] / drivers / infiniband / ulp / ipoib / ipoib_vlan.c
blob8292554bccb5de2387d7e858eaaa1d27ddb6b8b4
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.
33 #include <linux/module.h>
35 #include <linux/init.h>
36 #include <linux/seq_file.h>
38 #include <asm/uaccess.h>
40 #include "ipoib.h"
42 static ssize_t show_parent(struct device *d, struct device_attribute *attr,
43 char *buf)
45 struct net_device *dev = to_net_dev(d);
46 struct ipoib_dev_priv *priv = netdev_priv(dev);
48 return sprintf(buf, "%s\n", priv->parent->name);
50 static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
52 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
53 u16 pkey, int type)
55 int result;
57 priv->max_ib_mtu = ppriv->max_ib_mtu;
58 /* MTU will be reset when mcast join happens */
59 priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
60 priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
61 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
63 result = ipoib_set_dev_features(priv, ppriv->ca);
64 if (result)
65 goto err;
67 priv->pkey = pkey;
69 memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
70 priv->dev->broadcast[8] = pkey >> 8;
71 priv->dev->broadcast[9] = pkey & 0xff;
73 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
74 if (result < 0) {
75 ipoib_warn(ppriv, "failed to initialize subinterface: "
76 "device %s, port %d",
77 ppriv->ca->name, ppriv->port);
78 goto err;
81 result = register_netdevice(priv->dev);
82 if (result) {
83 ipoib_warn(priv, "failed to initialize; error %i", result);
84 goto register_failed;
87 priv->parent = ppriv->dev;
89 ipoib_create_debug_files(priv->dev);
91 /* RTNL childs don't need proprietary sysfs entries */
92 if (type == IPOIB_LEGACY_CHILD) {
93 if (ipoib_cm_add_mode_attr(priv->dev))
94 goto sysfs_failed;
95 if (ipoib_add_pkey_attr(priv->dev))
96 goto sysfs_failed;
97 if (ipoib_add_umcast_attr(priv->dev))
98 goto sysfs_failed;
100 if (device_create_file(&priv->dev->dev, &dev_attr_parent))
101 goto sysfs_failed;
104 priv->child_type = type;
105 priv->dev->iflink = ppriv->dev->ifindex;
106 list_add_tail(&priv->list, &ppriv->child_intfs);
108 return 0;
110 sysfs_failed:
111 result = -ENOMEM;
112 ipoib_delete_debug_files(priv->dev);
113 unregister_netdevice(priv->dev);
115 register_failed:
116 ipoib_dev_cleanup(priv->dev);
118 err:
119 return result;
122 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
124 struct ipoib_dev_priv *ppriv, *priv;
125 char intf_name[IFNAMSIZ];
126 struct ipoib_dev_priv *tpriv;
127 int result;
129 if (!capable(CAP_NET_ADMIN))
130 return -EPERM;
132 ppriv = netdev_priv(pdev);
134 snprintf(intf_name, sizeof intf_name, "%s.%04x",
135 ppriv->dev->name, pkey);
136 priv = ipoib_intf_alloc(intf_name);
137 if (!priv)
138 return -ENOMEM;
140 if (!rtnl_trylock())
141 return restart_syscall();
143 mutex_lock(&ppriv->vlan_mutex);
146 * First ensure this isn't a duplicate. We check the parent device and
147 * then all of the legacy child interfaces to make sure the Pkey
148 * doesn't match.
150 if (ppriv->pkey == pkey) {
151 result = -ENOTUNIQ;
152 goto out;
155 list_for_each_entry(tpriv, &ppriv->child_intfs, list) {
156 if (tpriv->pkey == pkey &&
157 tpriv->child_type == IPOIB_LEGACY_CHILD) {
158 result = -ENOTUNIQ;
159 goto out;
163 result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
165 out:
166 mutex_unlock(&ppriv->vlan_mutex);
168 if (result)
169 free_netdev(priv->dev);
171 rtnl_unlock();
173 return result;
176 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
178 struct ipoib_dev_priv *ppriv, *priv, *tpriv;
179 struct net_device *dev = NULL;
181 if (!capable(CAP_NET_ADMIN))
182 return -EPERM;
184 ppriv = netdev_priv(pdev);
186 if (!rtnl_trylock())
187 return restart_syscall();
188 mutex_lock(&ppriv->vlan_mutex);
189 list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
190 if (priv->pkey == pkey &&
191 priv->child_type == IPOIB_LEGACY_CHILD) {
192 unregister_netdevice(priv->dev);
193 list_del(&priv->list);
194 dev = priv->dev;
195 break;
198 mutex_unlock(&ppriv->vlan_mutex);
199 rtnl_unlock();
201 if (dev) {
202 free_netdev(dev);
203 return 0;
206 return -ENODEV;