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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. | |
31 | * | |
32 | * $Id: ipoib_vlan.c 1349 2004-12-16 21:09:43Z roland $ | |
33 | */ | |
34 | ||
1da177e4 LT |
35 | #include <linux/module.h> |
36 | ||
37 | #include <linux/init.h> | |
38 | #include <linux/slab.h> | |
39 | #include <linux/seq_file.h> | |
40 | ||
41 | #include <asm/uaccess.h> | |
42 | ||
43 | #include "ipoib.h" | |
44 | ||
43cb76d9 GKH |
45 | static ssize_t show_parent(struct device *d, struct device_attribute *attr, |
46 | char *buf) | |
1da177e4 | 47 | { |
43cb76d9 | 48 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
49 | struct ipoib_dev_priv *priv = netdev_priv(dev); |
50 | ||
51 | return sprintf(buf, "%s\n", priv->parent->name); | |
52 | } | |
43cb76d9 | 53 | static DEVICE_ATTR(parent, S_IRUGO, show_parent, NULL); |
1da177e4 LT |
54 | |
55 | int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) | |
56 | { | |
57 | struct ipoib_dev_priv *ppriv, *priv; | |
58 | char intf_name[IFNAMSIZ]; | |
59 | int result; | |
60 | ||
61 | if (!capable(CAP_NET_ADMIN)) | |
62 | return -EPERM; | |
63 | ||
64 | ppriv = netdev_priv(pdev); | |
65 | ||
95ed644f | 66 | mutex_lock(&ppriv->vlan_mutex); |
1da177e4 LT |
67 | |
68 | /* | |
69 | * First ensure this isn't a duplicate. We check the parent device and | |
70 | * then all of the child interfaces to make sure the Pkey doesn't match. | |
71 | */ | |
72 | if (ppriv->pkey == pkey) { | |
73 | result = -ENOTUNIQ; | |
74 | goto err; | |
75 | } | |
76 | ||
77 | list_for_each_entry(priv, &ppriv->child_intfs, list) { | |
78 | if (priv->pkey == pkey) { | |
79 | result = -ENOTUNIQ; | |
80 | goto err; | |
81 | } | |
82 | } | |
83 | ||
84 | snprintf(intf_name, sizeof intf_name, "%s.%04x", | |
85 | ppriv->dev->name, pkey); | |
86 | priv = ipoib_intf_alloc(intf_name); | |
87 | if (!priv) { | |
88 | result = -ENOMEM; | |
89 | goto err; | |
90 | } | |
91 | ||
bc7b3a36 | 92 | priv->max_ib_mtu = ppriv->max_ib_mtu; |
1da177e4 LT |
93 | set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); |
94 | ||
95 | priv->pkey = pkey; | |
96 | ||
97 | memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); | |
98 | priv->dev->broadcast[8] = pkey >> 8; | |
99 | priv->dev->broadcast[9] = pkey & 0xff; | |
100 | ||
101 | result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); | |
102 | if (result < 0) { | |
103 | ipoib_warn(ppriv, "failed to initialize subinterface: " | |
104 | "device %s, port %d", | |
105 | ppriv->ca->name, ppriv->port); | |
106 | goto device_init_failed; | |
107 | } | |
108 | ||
109 | result = register_netdev(priv->dev); | |
110 | if (result) { | |
111 | ipoib_warn(priv, "failed to initialize; error %i", result); | |
112 | goto register_failed; | |
113 | } | |
114 | ||
115 | priv->parent = ppriv->dev; | |
116 | ||
1732b0ef | 117 | ipoib_create_debug_files(priv->dev); |
1da177e4 | 118 | |
839fcaba MT |
119 | if (ipoib_cm_add_mode_attr(priv->dev)) |
120 | goto sysfs_failed; | |
1da177e4 LT |
121 | if (ipoib_add_pkey_attr(priv->dev)) |
122 | goto sysfs_failed; | |
335a64a5 OG |
123 | if (ipoib_add_umcast_attr(priv->dev)) |
124 | goto sysfs_failed; | |
1da177e4 | 125 | |
43cb76d9 | 126 | if (device_create_file(&priv->dev->dev, &dev_attr_parent)) |
1da177e4 LT |
127 | goto sysfs_failed; |
128 | ||
129 | list_add_tail(&priv->list, &ppriv->child_intfs); | |
130 | ||
95ed644f | 131 | mutex_unlock(&ppriv->vlan_mutex); |
1da177e4 LT |
132 | |
133 | return 0; | |
134 | ||
135 | sysfs_failed: | |
1732b0ef | 136 | ipoib_delete_debug_files(priv->dev); |
1da177e4 LT |
137 | unregister_netdev(priv->dev); |
138 | ||
139 | register_failed: | |
140 | ipoib_dev_cleanup(priv->dev); | |
141 | ||
142 | device_init_failed: | |
143 | free_netdev(priv->dev); | |
144 | ||
145 | err: | |
95ed644f | 146 | mutex_unlock(&ppriv->vlan_mutex); |
1da177e4 LT |
147 | return result; |
148 | } | |
149 | ||
150 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) | |
151 | { | |
152 | struct ipoib_dev_priv *ppriv, *priv, *tpriv; | |
153 | int ret = -ENOENT; | |
154 | ||
155 | if (!capable(CAP_NET_ADMIN)) | |
156 | return -EPERM; | |
157 | ||
158 | ppriv = netdev_priv(pdev); | |
159 | ||
95ed644f | 160 | mutex_lock(&ppriv->vlan_mutex); |
1da177e4 LT |
161 | list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { |
162 | if (priv->pkey == pkey) { | |
163 | unregister_netdev(priv->dev); | |
164 | ipoib_dev_cleanup(priv->dev); | |
1da177e4 | 165 | list_del(&priv->list); |
5941d079 | 166 | free_netdev(priv->dev); |
1da177e4 LT |
167 | |
168 | ret = 0; | |
169 | break; | |
170 | } | |
171 | } | |
95ed644f | 172 | mutex_unlock(&ppriv->vlan_mutex); |
1da177e4 LT |
173 | |
174 | return ret; | |
175 | } |