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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; | |
1da177e4 LT |
61 | set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); |
62 | ||
83bb63f6 OG |
63 | result = ipoib_set_dev_features(priv, ppriv->ca); |
64 | if (result) | |
edb5abb1 | 65 | goto err; |
83bb63f6 | 66 | |
1da177e4 LT |
67 | priv->pkey = pkey; |
68 | ||
69 | memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); | |
70 | priv->dev->broadcast[8] = pkey >> 8; | |
71 | priv->dev->broadcast[9] = pkey & 0xff; | |
72 | ||
73 | result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); | |
74 | if (result < 0) { | |
75 | ipoib_warn(ppriv, "failed to initialize subinterface: " | |
76 | "device %s, port %d", | |
77 | ppriv->ca->name, ppriv->port); | |
edb5abb1 | 78 | goto err; |
1da177e4 LT |
79 | } |
80 | ||
cbbe1efa | 81 | result = register_netdevice(priv->dev); |
1da177e4 LT |
82 | if (result) { |
83 | ipoib_warn(priv, "failed to initialize; error %i", result); | |
84 | goto register_failed; | |
85 | } | |
86 | ||
87 | priv->parent = ppriv->dev; | |
88 | ||
1732b0ef | 89 | ipoib_create_debug_files(priv->dev); |
1da177e4 | 90 | |
862096a8 OG |
91 | /* RTNL childs don't need proprietary sysfs entries */ |
92 | if (type == IPOIB_LEGACY_CHILD) { | |
93 | if (ipoib_cm_add_mode_attr(priv->dev)) | |
94 | goto sysfs_failed; | |
95 | if (ipoib_add_pkey_attr(priv->dev)) | |
96 | goto sysfs_failed; | |
97 | if (ipoib_add_umcast_attr(priv->dev)) | |
98 | goto sysfs_failed; | |
99 | ||
100 | if (device_create_file(&priv->dev->dev, &dev_attr_parent)) | |
101 | goto sysfs_failed; | |
102 | } | |
1da177e4 | 103 | |
862096a8 OG |
104 | priv->child_type = type; |
105 | priv->dev->iflink = ppriv->dev->ifindex; | |
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 | ||
134 | snprintf(intf_name, sizeof intf_name, "%s.%04x", | |
135 | ppriv->dev->name, pkey); | |
136 | priv = ipoib_intf_alloc(intf_name); | |
137 | if (!priv) | |
138 | return -ENOMEM; | |
139 | ||
140 | if (!rtnl_trylock()) | |
141 | return restart_syscall(); | |
142 | ||
143 | mutex_lock(&ppriv->vlan_mutex); | |
144 | ||
145 | /* | |
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 | |
148 | * doesn't match. | |
149 | */ | |
150 | if (ppriv->pkey == pkey) { | |
151 | result = -ENOTUNIQ; | |
152 | goto out; | |
153 | } | |
154 | ||
155 | list_for_each_entry(tpriv, &ppriv->child_intfs, list) { | |
156 | if (tpriv->pkey == pkey && | |
157 | tpriv->child_type == IPOIB_LEGACY_CHILD) { | |
158 | result = -ENOTUNIQ; | |
159 | goto out; | |
160 | } | |
161 | } | |
162 | ||
163 | result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD); | |
164 | ||
165 | out: | |
95ed644f | 166 | mutex_unlock(&ppriv->vlan_mutex); |
9baa0b03 | 167 | |
90326945 FD |
168 | rtnl_unlock(); |
169 | ||
9baa0b03 | 170 | if (result) |
edb5abb1 RD |
171 | free_netdev(priv->dev); |
172 | ||
1da177e4 LT |
173 | return result; |
174 | } | |
175 | ||
176 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) | |
177 | { | |
178 | struct ipoib_dev_priv *ppriv, *priv, *tpriv; | |
edb5abb1 | 179 | struct net_device *dev = NULL; |
1da177e4 LT |
180 | |
181 | if (!capable(CAP_NET_ADMIN)) | |
182 | return -EPERM; | |
183 | ||
184 | ppriv = netdev_priv(pdev); | |
185 | ||
26574401 EB |
186 | if (!rtnl_trylock()) |
187 | return restart_syscall(); | |
95ed644f | 188 | mutex_lock(&ppriv->vlan_mutex); |
1da177e4 | 189 | list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { |
9baa0b03 OG |
190 | if (priv->pkey == pkey && |
191 | priv->child_type == IPOIB_LEGACY_CHILD) { | |
cbbe1efa | 192 | unregister_netdevice(priv->dev); |
1da177e4 | 193 | list_del(&priv->list); |
edb5abb1 | 194 | dev = priv->dev; |
1da177e4 LT |
195 | break; |
196 | } | |
197 | } | |
95ed644f | 198 | mutex_unlock(&ppriv->vlan_mutex); |
cbbe1efa | 199 | rtnl_unlock(); |
1da177e4 | 200 | |
edb5abb1 RD |
201 | if (dev) { |
202 | free_netdev(dev); | |
203 | return 0; | |
204 | } | |
205 | ||
206 | return -ENODEV; | |
1da177e4 | 207 | } |