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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> | |
1da177e4 LT |
36 | #include <linux/seq_file.h> |
37 | ||
38 | #include <asm/uaccess.h> | |
39 | ||
40 | #include "ipoib.h" | |
41 | ||
43cb76d9 GKH |
42 | static ssize_t show_parent(struct device *d, struct device_attribute *attr, |
43 | char *buf) | |
1da177e4 | 44 | { |
43cb76d9 | 45 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
46 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
47 | ||
48 | return sprintf(buf, "%s\n", priv->parent->name); | |
49 | } | |
43cb76d9 | 50 | static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL); |
1da177e4 | 51 | |
9baa0b03 OG |
52 | int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, |
53 | u16 pkey, int type) | |
1da177e4 | 54 | { |
1da177e4 LT |
55 | int result; |
56 | ||
bc7b3a36 | 57 | priv->max_ib_mtu = ppriv->max_ib_mtu; |
b4132efa EC |
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; | |
2c153959 | 61 | priv->parent = ppriv->dev; |
1da177e4 LT |
62 | set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); |
63 | ||
83bb63f6 OG |
64 | result = ipoib_set_dev_features(priv, ppriv->ca); |
65 | if (result) | |
edb5abb1 | 66 | goto err; |
83bb63f6 | 67 | |
1da177e4 LT |
68 | priv->pkey = pkey; |
69 | ||
70 | memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); | |
492a7e67 MB |
71 | memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid)); |
72 | set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); | |
1da177e4 LT |
73 | priv->dev->broadcast[8] = pkey >> 8; |
74 | priv->dev->broadcast[9] = pkey & 0xff; | |
75 | ||
76 | result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); | |
77 | if (result < 0) { | |
78 | ipoib_warn(ppriv, "failed to initialize subinterface: " | |
79 | "device %s, port %d", | |
80 | ppriv->ca->name, ppriv->port); | |
edb5abb1 | 81 | goto err; |
1da177e4 LT |
82 | } |
83 | ||
cbbe1efa | 84 | result = register_netdevice(priv->dev); |
1da177e4 LT |
85 | if (result) { |
86 | ipoib_warn(priv, "failed to initialize; error %i", result); | |
87 | goto register_failed; | |
88 | } | |
89 | ||
1732b0ef | 90 | ipoib_create_debug_files(priv->dev); |
1da177e4 | 91 | |
862096a8 OG |
92 | /* RTNL childs don't need proprietary sysfs entries */ |
93 | if (type == IPOIB_LEGACY_CHILD) { | |
94 | if (ipoib_cm_add_mode_attr(priv->dev)) | |
95 | goto sysfs_failed; | |
96 | if (ipoib_add_pkey_attr(priv->dev)) | |
97 | goto sysfs_failed; | |
98 | if (ipoib_add_umcast_attr(priv->dev)) | |
99 | goto sysfs_failed; | |
100 | ||
101 | if (device_create_file(&priv->dev->dev, &dev_attr_parent)) | |
102 | goto sysfs_failed; | |
103 | } | |
1da177e4 | 104 | |
862096a8 | 105 | priv->child_type = type; |
1da177e4 LT |
106 | list_add_tail(&priv->list, &ppriv->child_intfs); |
107 | ||
1da177e4 LT |
108 | return 0; |
109 | ||
110 | sysfs_failed: | |
9baa0b03 | 111 | result = -ENOMEM; |
1732b0ef | 112 | ipoib_delete_debug_files(priv->dev); |
cbbe1efa | 113 | unregister_netdevice(priv->dev); |
1da177e4 LT |
114 | |
115 | register_failed: | |
116 | ipoib_dev_cleanup(priv->dev); | |
117 | ||
1da177e4 | 118 | err: |
9baa0b03 OG |
119 | return result; |
120 | } | |
121 | ||
122 | int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) | |
123 | { | |
124 | struct ipoib_dev_priv *ppriv, *priv; | |
125 | char intf_name[IFNAMSIZ]; | |
126 | struct ipoib_dev_priv *tpriv; | |
127 | int result; | |
128 | ||
129 | if (!capable(CAP_NET_ADMIN)) | |
130 | return -EPERM; | |
131 | ||
132 | ppriv = netdev_priv(pdev); | |
133 | ||
198b12f7 ES |
134 | if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) |
135 | return -EPERM; | |
136 | ||
9baa0b03 OG |
137 | snprintf(intf_name, sizeof intf_name, "%s.%04x", |
138 | ppriv->dev->name, pkey); | |
139 | priv = ipoib_intf_alloc(intf_name); | |
140 | if (!priv) | |
141 | return -ENOMEM; | |
142 | ||
143 | if (!rtnl_trylock()) | |
144 | return restart_syscall(); | |
145 | ||
f47944cc | 146 | down_write(&ppriv->vlan_rwsem); |
9baa0b03 OG |
147 | |
148 | /* | |
149 | * First ensure this isn't a duplicate. We check the parent device and | |
150 | * then all of the legacy child interfaces to make sure the Pkey | |
151 | * doesn't match. | |
152 | */ | |
153 | if (ppriv->pkey == pkey) { | |
154 | result = -ENOTUNIQ; | |
155 | goto out; | |
156 | } | |
157 | ||
158 | list_for_each_entry(tpriv, &ppriv->child_intfs, list) { | |
159 | if (tpriv->pkey == pkey && | |
160 | tpriv->child_type == IPOIB_LEGACY_CHILD) { | |
161 | result = -ENOTUNIQ; | |
162 | goto out; | |
163 | } | |
164 | } | |
165 | ||
166 | result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD); | |
167 | ||
168 | out: | |
f47944cc | 169 | up_write(&ppriv->vlan_rwsem); |
9baa0b03 OG |
170 | |
171 | if (result) | |
edb5abb1 RD |
172 | free_netdev(priv->dev); |
173 | ||
9baa0b03 OG |
174 | rtnl_unlock(); |
175 | ||
1da177e4 LT |
176 | return result; |
177 | } | |
178 | ||
179 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) | |
180 | { | |
181 | struct ipoib_dev_priv *ppriv, *priv, *tpriv; | |
edb5abb1 | 182 | struct net_device *dev = NULL; |
1da177e4 LT |
183 | |
184 | if (!capable(CAP_NET_ADMIN)) | |
185 | return -EPERM; | |
186 | ||
187 | ppriv = netdev_priv(pdev); | |
188 | ||
198b12f7 ES |
189 | if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) |
190 | return -EPERM; | |
191 | ||
26574401 EB |
192 | if (!rtnl_trylock()) |
193 | return restart_syscall(); | |
f47944cc ES |
194 | |
195 | down_write(&ppriv->vlan_rwsem); | |
1da177e4 | 196 | list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { |
9baa0b03 OG |
197 | if (priv->pkey == pkey && |
198 | priv->child_type == IPOIB_LEGACY_CHILD) { | |
cbbe1efa | 199 | unregister_netdevice(priv->dev); |
1da177e4 | 200 | list_del(&priv->list); |
edb5abb1 | 201 | dev = priv->dev; |
1da177e4 LT |
202 | break; |
203 | } | |
204 | } | |
f47944cc ES |
205 | up_write(&ppriv->vlan_rwsem); |
206 | ||
cbbe1efa | 207 | rtnl_unlock(); |
1da177e4 | 208 | |
edb5abb1 RD |
209 | if (dev) { |
210 | free_netdev(dev); | |
211 | return 0; | |
212 | } | |
213 | ||
214 | return -ENODEV; | |
1da177e4 | 215 | } |