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>
35 #include <linux/init.h>
36 #include <linux/seq_file.h>
38 #include <asm/uaccess.h>
42 static ssize_t show_parent(struct device *d, struct device_attribute *attr,
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,
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 priv->parent = ppriv->dev;
62 set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags);
64 result = ipoib_set_dev_features(priv, ppriv->ca);
70 memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN);
71 memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid));
72 set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags);
73 priv->dev->broadcast[8] = pkey >> 8;
74 priv->dev->broadcast[9] = pkey & 0xff;
76 result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port);
78 ipoib_warn(ppriv, "failed to initialize subinterface: "
80 ppriv->ca->name, ppriv->port);
84 result = register_netdevice(priv->dev);
86 ipoib_warn(priv, "failed to initialize; error %i", result);
90 /* RTNL childs don't need proprietary sysfs entries */
91 if (type == IPOIB_LEGACY_CHILD) {
92 if (ipoib_cm_add_mode_attr(priv->dev))
94 if (ipoib_add_pkey_attr(priv->dev))
96 if (ipoib_add_umcast_attr(priv->dev))
99 if (device_create_file(&priv->dev->dev, &dev_attr_parent))
103 priv->child_type = type;
104 list_add_tail(&priv->list, &ppriv->child_intfs);
110 unregister_netdevice(priv->dev);
113 ipoib_dev_cleanup(priv->dev);
119 int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey)
121 struct ipoib_dev_priv *ppriv, *priv;
122 char intf_name[IFNAMSIZ];
123 struct ipoib_dev_priv *tpriv;
126 if (!capable(CAP_NET_ADMIN))
129 ppriv = netdev_priv(pdev);
131 if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags))
134 snprintf(intf_name, sizeof intf_name, "%s.%04x",
135 ppriv->dev->name, pkey);
136 priv = ipoib_intf_alloc(intf_name);
141 return restart_syscall();
143 down_write(&ppriv->vlan_rwsem);
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
150 if (ppriv->pkey == pkey) {
155 list_for_each_entry(tpriv, &ppriv->child_intfs, list) {
156 if (tpriv->pkey == pkey &&
157 tpriv->child_type == IPOIB_LEGACY_CHILD) {
163 result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD);
166 up_write(&ppriv->vlan_rwsem);
171 free_netdev(priv->dev);
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))
184 ppriv = netdev_priv(pdev);
186 if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags))
190 return restart_syscall();
192 down_write(&ppriv->vlan_rwsem);
193 list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) {
194 if (priv->pkey == pkey &&
195 priv->child_type == IPOIB_LEGACY_CHILD) {
196 list_del(&priv->list);
201 up_write(&ppriv->vlan_rwsem);
204 ipoib_dbg(ppriv, "delete child vlan %s\n", dev->name);
205 unregister_netdevice(dev);