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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 | 33 | #include <linux/module.h> |
174cd4b1 | 34 | #include <linux/sched/signal.h> |
1da177e4 LT |
35 | |
36 | #include <linux/init.h> | |
1da177e4 LT |
37 | #include <linux/seq_file.h> |
38 | ||
7c0f6ba6 | 39 | #include <linux/uaccess.h> |
1da177e4 LT |
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 | 52 | |
9baa0b03 OG |
53 | int __ipoib_vlan_add(struct ipoib_dev_priv *ppriv, struct ipoib_dev_priv *priv, |
54 | u16 pkey, int type) | |
1da177e4 | 55 | { |
1da177e4 LT |
56 | int result; |
57 | ||
bc7b3a36 | 58 | priv->max_ib_mtu = ppriv->max_ib_mtu; |
b4132efa EC |
59 | /* MTU will be reset when mcast join happens */ |
60 | priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu); | |
61 | priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu; | |
2c153959 | 62 | priv->parent = ppriv->dev; |
1da177e4 LT |
63 | set_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags); |
64 | ||
f7534f45 | 65 | ipoib_set_dev_features(priv, ppriv->ca); |
83bb63f6 | 66 | |
1da177e4 LT |
67 | priv->pkey = pkey; |
68 | ||
69 | memcpy(priv->dev->dev_addr, ppriv->dev->dev_addr, INFINIBAND_ALEN); | |
492a7e67 MB |
70 | memcpy(&priv->local_gid, &ppriv->local_gid, sizeof(priv->local_gid)); |
71 | set_bit(IPOIB_FLAG_DEV_ADDR_SET, &priv->flags); | |
1da177e4 LT |
72 | priv->dev->broadcast[8] = pkey >> 8; |
73 | priv->dev->broadcast[9] = pkey & 0xff; | |
74 | ||
75 | result = ipoib_dev_init(priv->dev, ppriv->ca, ppriv->port); | |
76 | if (result < 0) { | |
77 | ipoib_warn(ppriv, "failed to initialize subinterface: " | |
78 | "device %s, port %d", | |
79 | ppriv->ca->name, ppriv->port); | |
edb5abb1 | 80 | goto err; |
1da177e4 LT |
81 | } |
82 | ||
cbbe1efa | 83 | result = register_netdevice(priv->dev); |
1da177e4 LT |
84 | if (result) { |
85 | ipoib_warn(priv, "failed to initialize; error %i", result); | |
86 | goto register_failed; | |
87 | } | |
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 | 104 | priv->child_type = type; |
1da177e4 LT |
105 | list_add_tail(&priv->list, &ppriv->child_intfs); |
106 | ||
1da177e4 LT |
107 | return 0; |
108 | ||
109 | sysfs_failed: | |
9baa0b03 | 110 | result = -ENOMEM; |
1732b0ef | 111 | ipoib_delete_debug_files(priv->dev); |
cbbe1efa | 112 | unregister_netdevice(priv->dev); |
1da177e4 LT |
113 | |
114 | register_failed: | |
115 | ipoib_dev_cleanup(priv->dev); | |
116 | ||
1da177e4 | 117 | err: |
9baa0b03 OG |
118 | return result; |
119 | } | |
120 | ||
121 | int ipoib_vlan_add(struct net_device *pdev, unsigned short pkey) | |
122 | { | |
123 | struct ipoib_dev_priv *ppriv, *priv; | |
124 | char intf_name[IFNAMSIZ]; | |
125 | struct ipoib_dev_priv *tpriv; | |
126 | int result; | |
127 | ||
128 | if (!capable(CAP_NET_ADMIN)) | |
129 | return -EPERM; | |
130 | ||
131 | ppriv = netdev_priv(pdev); | |
132 | ||
198b12f7 ES |
133 | if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) |
134 | return -EPERM; | |
135 | ||
9baa0b03 OG |
136 | snprintf(intf_name, sizeof intf_name, "%s.%04x", |
137 | ppriv->dev->name, pkey); | |
138 | priv = ipoib_intf_alloc(intf_name); | |
139 | if (!priv) | |
140 | return -ENOMEM; | |
141 | ||
142 | if (!rtnl_trylock()) | |
143 | return restart_syscall(); | |
144 | ||
f47944cc | 145 | down_write(&ppriv->vlan_rwsem); |
9baa0b03 OG |
146 | |
147 | /* | |
148 | * First ensure this isn't a duplicate. We check the parent device and | |
149 | * then all of the legacy child interfaces to make sure the Pkey | |
150 | * doesn't match. | |
151 | */ | |
152 | if (ppriv->pkey == pkey) { | |
153 | result = -ENOTUNIQ; | |
154 | goto out; | |
155 | } | |
156 | ||
157 | list_for_each_entry(tpriv, &ppriv->child_intfs, list) { | |
158 | if (tpriv->pkey == pkey && | |
159 | tpriv->child_type == IPOIB_LEGACY_CHILD) { | |
160 | result = -ENOTUNIQ; | |
161 | goto out; | |
162 | } | |
163 | } | |
164 | ||
165 | result = __ipoib_vlan_add(ppriv, priv, pkey, IPOIB_LEGACY_CHILD); | |
166 | ||
167 | out: | |
f47944cc | 168 | up_write(&ppriv->vlan_rwsem); |
9baa0b03 | 169 | |
89a3987a FD |
170 | rtnl_unlock(); |
171 | ||
9baa0b03 | 172 | if (result) |
edb5abb1 RD |
173 | free_netdev(priv->dev); |
174 | ||
1da177e4 LT |
175 | return result; |
176 | } | |
177 | ||
178 | int ipoib_vlan_delete(struct net_device *pdev, unsigned short pkey) | |
179 | { | |
180 | struct ipoib_dev_priv *ppriv, *priv, *tpriv; | |
edb5abb1 | 181 | struct net_device *dev = NULL; |
1da177e4 LT |
182 | |
183 | if (!capable(CAP_NET_ADMIN)) | |
184 | return -EPERM; | |
185 | ||
186 | ppriv = netdev_priv(pdev); | |
187 | ||
198b12f7 ES |
188 | if (test_bit(IPOIB_FLAG_GOING_DOWN, &ppriv->flags)) |
189 | return -EPERM; | |
190 | ||
26574401 EB |
191 | if (!rtnl_trylock()) |
192 | return restart_syscall(); | |
f47944cc ES |
193 | |
194 | down_write(&ppriv->vlan_rwsem); | |
1da177e4 | 195 | list_for_each_entry_safe(priv, tpriv, &ppriv->child_intfs, list) { |
9baa0b03 OG |
196 | if (priv->pkey == pkey && |
197 | priv->child_type == IPOIB_LEGACY_CHILD) { | |
1da177e4 | 198 | list_del(&priv->list); |
edb5abb1 | 199 | dev = priv->dev; |
1da177e4 LT |
200 | break; |
201 | } | |
202 | } | |
f47944cc ES |
203 | up_write(&ppriv->vlan_rwsem); |
204 | ||
1c3098cd FD |
205 | if (dev) { |
206 | ipoib_dbg(ppriv, "delete child vlan %s\n", dev->name); | |
207 | unregister_netdevice(dev); | |
208 | } | |
209 | ||
cbbe1efa | 210 | rtnl_unlock(); |
1da177e4 | 211 | |
edb5abb1 RD |
212 | if (dev) { |
213 | free_netdev(dev); | |
214 | return 0; | |
215 | } | |
216 | ||
217 | return -ENODEV; | |
1da177e4 | 218 | } |