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1da177e4 LT |
1 | /* |
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. | |
1da177e4 LT |
31 | */ |
32 | ||
1da177e4 LT |
33 | #include <linux/module.h> |
34 | ||
35 | #include <linux/init.h> | |
36 | #include <linux/slab.h> | |
37 | #include <linux/seq_file.h> | |
38 | ||
39 | #include <asm/uaccess.h> | |
40 | ||
41 | #include "ipoib.h" | |
42 | ||
43cb76d9 GKH |
43 | static ssize_t show_parent(struct device *d, struct device_attribute *attr, |
44 | char *buf) | |
1da177e4 | 45 | { |
43cb76d9 | 46 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
47 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
48 | ||
49 | return sprintf(buf, "%s\n", priv->parent->name); | |
50 | } | |
43cb76d9 | 51 | static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL); |
1da177e4 LT |
52 | |
53 | int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) | |
54 | { | |
55 | struct ipoib_dev_priv *ppriv, *priv; | |
56 | char intf_name[IFNAMSIZ]; | |
57 | int result; | |
58 | ||
59 | if (!capable(CAP_NET_ADMIN)) | |
60 | return -EPERM; | |
61 | ||
62 | ppriv = netdev_priv(pdev); | |
63 | ||
cbbe1efa | 64 | rtnl_lock(); |
95ed644f | 65 | mutex_lock(&ppriv->vlan_mutex); |
1da177e4 LT |
66 | |
67 | /* | |
68 | * First ensure this isn't a duplicate. We check the parent device and | |
69 | * then all of the child interfaces to make sure the Pkey doesn't match. | |
70 | */ | |
71 | if (ppriv->pkey == pkey) { | |
72 | result = -ENOTUNIQ; | |
edb5abb1 | 73 | priv = NULL; |
1da177e4 LT |
74 | goto err; |
75 | } | |
76 | ||
77 | list_for_each_entry(priv, &ppriv->child_intfs, list) { | |
78 | if (priv->pkey == pkey) { | |
79 | result = -ENOTUNIQ; | |
edb5abb1 | 80 | priv = NULL; |
1da177e4 LT |
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 | ||
bc7b3a36 | 93 | priv->max_ib_mtu = ppriv->max_ib_mtu; |
b4132efa EC |
94 | /* MTU will be reset when mcast join happens */ |
95 | priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); | |
96 | priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; | |
1da177e4 LT |
97 | set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); |
98 | ||
83bb63f6 OG |
99 | result = ipoib_set_dev_features(priv, ppriv->ca); |
100 | if (result) | |
edb5abb1 | 101 | goto err; |
83bb63f6 | 102 | |
1da177e4 LT |
103 | priv->pkey = pkey; |
104 | ||
105 | memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); | |
106 | priv->dev->broadcast[8] = pkey >> 8; | |
107 | priv->dev->broadcast[9] = pkey & 0xff; | |
108 | ||
109 | result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); | |
110 | if (result < 0) { | |
111 | ipoib_warn(ppriv, "failed to initialize subinterface: " | |
112 | "device %s, port %d", | |
113 | ppriv->ca->name, ppriv->port); | |
edb5abb1 | 114 | goto err; |
1da177e4 LT |
115 | } |
116 | ||
cbbe1efa | 117 | result = register_netdevice(priv->dev); |
1da177e4 LT |
118 | if (result) { |
119 | ipoib_warn(priv, "failed to initialize; error %i", result); | |
120 | goto register_failed; | |
121 | } | |
122 | ||
123 | priv->parent = ppriv->dev; | |
124 | ||
1732b0ef | 125 | ipoib_create_debug_files(priv->dev); |
1da177e4 | 126 | |
839fcaba MT |
127 | if (ipoib_cm_add_mode_attr(priv->dev)) |
128 | goto sysfs_failed; | |
1da177e4 LT |
129 | if (ipoib_add_pkey_attr(priv->dev)) |
130 | goto sysfs_failed; | |
335a64a5 OG |
131 | if (ipoib_add_umcast_attr(priv->dev)) |
132 | goto sysfs_failed; | |
1da177e4 | 133 | |
43cb76d9 | 134 | if (device_create_file(&priv->dev->dev, &dev_attr_parent)) |
1da177e4 LT |
135 | goto sysfs_failed; |
136 | ||
137 | list_add_tail(&priv->list, &ppriv->child_intfs); | |
138 | ||
95ed644f | 139 | mutex_unlock(&ppriv->vlan_mutex); |
cbbe1efa | 140 | rtnl_unlock(); |
1da177e4 LT |
141 | |
142 | return 0; | |
143 | ||
144 | sysfs_failed: | |
1732b0ef | 145 | ipoib_delete_debug_files(priv->dev); |
cbbe1efa | 146 | unregister_netdevice(priv->dev); |
1da177e4 LT |
147 | |
148 | register_failed: | |
149 | ipoib_dev_cleanup(priv->dev); | |
150 | ||
1da177e4 | 151 | err: |
95ed644f | 152 | mutex_unlock(&ppriv->vlan_mutex); |
cbbe1efa | 153 | rtnl_unlock(); |
edb5abb1 RD |
154 | if (priv) |
155 | free_netdev(priv->dev); | |
156 | ||
1da177e4 LT |
157 | return result; |
158 | } | |
159 | ||
160 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) | |
161 | { | |
162 | struct ipoib_dev_priv *ppriv, *priv, *tpriv; | |
edb5abb1 | 163 | struct net_device *dev = NULL; |
1da177e4 LT |
164 | |
165 | if (!capable(CAP_NET_ADMIN)) | |
166 | return -EPERM; | |
167 | ||
168 | ppriv = netdev_priv(pdev); | |
169 | ||
cbbe1efa | 170 | rtnl_lock(); |
95ed644f | 171 | mutex_lock(&ppriv->vlan_mutex); |
1da177e4 LT |
172 | list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { |
173 | if (priv->pkey == pkey) { | |
cbbe1efa | 174 | unregister_netdevice(priv->dev); |
1da177e4 | 175 | ipoib_dev_cleanup(priv->dev); |
1da177e4 | 176 | list_del(&priv->list); |
edb5abb1 | 177 | dev = priv->dev; |
1da177e4 LT |
178 | break; |
179 | } | |
180 | } | |
95ed644f | 181 | mutex_unlock(&ppriv->vlan_mutex); |
cbbe1efa | 182 | rtnl_unlock(); |
1da177e4 | 183 | |
edb5abb1 RD |
184 | if (dev) { |
185 | free_netdev(dev); | |
186 | return 0; | |
187 | } | |
188 | ||
189 | return -ENODEV; | |
1da177e4 | 190 | } |