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
33 #include <linux/module.h>
34 #include <linux/sched/signal.h>
36 #include <linux/init.h>
37 #include <linux/seq_file.h>
39 #include <linux/uaccess.h>
43 static ssize_t show_parent(struct device *d, struct device_attribute *attr,
46 struct net_device *dev = to_net_dev(d);
47 struct ipoib_dev_priv *priv = ipoib_priv(dev);
49 return sprintf(buf, "%s\n", priv->parent->name);
51 static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL);
53 int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv,
58 priv->max_ib_mtu = ppriv->max_ib_mtu;
59 /* MTU will be reset when mcast join happens */
60 priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
61 priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
62 priv->parent = ppriv->dev;
63 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
65 ipoib_set_dev_features(priv, ppriv->ca);
69 memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
70 memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid));
71 set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags);
72 priv->dev->broadcast[8] = pkey >> 8;
73 priv->dev->broadcast[9] = pkey & 0xff;
75 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
77 ipoib_warn(ppriv, "failed to initialize subinterface: "
79 ppriv->ca->name, ppriv->port);
83 result = register_netdevice(priv->dev);
85 ipoib_warn(priv, "failed to initialize; error %i", result);
89 /* RTNL childs don't need proprietary sysfs entries */
90 if (type == IPOIB_LEGACY_CHILD) {
91 if (ipoib_cm_add_mode_attr(priv->dev))
93 if (ipoib_add_pkey_attr(priv->dev))
95 if (ipoib_add_umcast_attr(priv->dev))
98 if (device_create_file(&priv->dev->dev, &dev_attr_parent))
102 priv->child_type = type;
103 list_add_tail(&priv->list, &ppriv->child_intfs);
109 unregister_netdevice(priv->dev);
112 ipoib_dev_cleanup(priv->dev);
118 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
120 struct ipoib_dev_priv *ppriv, *priv;
121 char intf_name[IFNAMSIZ];
122 struct ipoib_dev_priv *tpriv;
125 if (!capable(CAP_NET_ADMIN))
128 ppriv = ipoib_priv(pdev);
130 if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags))
133 snprintf(intf_name, sizeof intf_name, "%s.%04x",
134 ppriv->dev->name, pkey);
136 if (!mutex_trylock(&ppriv->sysfs_mutex))
137 return restart_syscall();
139 if (!rtnl_trylock()) {
140 mutex_unlock(&ppriv->sysfs_mutex);
141 return restart_syscall();
144 priv = ipoib_intf_alloc(ppriv->ca, ppriv->port, intf_name);
147 mutex_unlock(&ppriv->sysfs_mutex);
151 down_write(&ppriv->vlan_rwsem);
154 * First ensure this isn't a duplicate. We check the parent device and
155 * then all of the legacy child interfaces to make sure the Pkey
158 if (ppriv->pkey == pkey) {
163 list_for_each_entry(tpriv, &ppriv->child_intfs, list) {
164 if (tpriv->pkey == pkey &&
165 tpriv->child_type == IPOIB_LEGACY_CHILD) {
171 result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
174 up_write(&ppriv->vlan_rwsem);
176 mutex_unlock(&ppriv->sysfs_mutex);
179 free_netdev(priv->dev);
186 int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey)
188 struct ipoib_dev_priv *ppriv, *priv, *tpriv;
189 struct net_device *dev = NULL;
191 if (!capable(CAP_NET_ADMIN))
194 ppriv = ipoib_priv(pdev);
196 if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags))
199 if (!mutex_trylock(&ppriv->sysfs_mutex))
200 return restart_syscall();
202 if (!rtnl_trylock()) {
203 mutex_unlock(&ppriv->sysfs_mutex);
204 return restart_syscall();
207 down_write(&ppriv->vlan_rwsem);
208 list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
209 if (priv->pkey == pkey &&
210 priv->child_type == IPOIB_LEGACY_CHILD) {
211 list_del(&priv->list);
216 up_write(&ppriv->vlan_rwsem);
219 ipoib_dbg(ppriv, "delete child vlan %s\n", dev->name);
220 unregister_netdevice(dev);
224 mutex_unlock(&ppriv->sysfs_mutex);