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9baa0b03 OG |
1 | /* |
2 | * Copyright (c) 2012 Mellanox Technologies. - 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 | ||
33 | #include <linux/netdevice.h> | |
0d68fc4f | 34 | #include <linux/if_arp.h> /* For ARPHRD_xxx */ |
9baa0b03 OG |
35 | #include <linux/module.h> |
36 | #include <net/rtnetlink.h> | |
37 | #include "ipoib.h" | |
38 | ||
39 | static const struct nla_policy ipoib_policy[IFLA_IPOIB_MAX + 1] = { | |
40 | [IFLA_IPOIB_PKEY] = { .type = NLA_U16 }, | |
862096a8 OG |
41 | [IFLA_IPOIB_MODE] = { .type = NLA_U16 }, |
42 | [IFLA_IPOIB_UMCAST] = { .type = NLA_U16 }, | |
9baa0b03 OG |
43 | }; |
44 | ||
862096a8 OG |
45 | static int ipoib_fill_info(struct sk_buff *skb, const struct net_device *dev) |
46 | { | |
47 | struct ipoib_dev_priv *priv = netdev_priv(dev); | |
48 | u16 val; | |
49 | ||
50 | if (nla_put_u16(skb, IFLA_IPOIB_PKEY, priv->pkey)) | |
51 | goto nla_put_failure; | |
52 | ||
53 | val = test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags); | |
54 | if (nla_put_u16(skb, IFLA_IPOIB_MODE, val)) | |
55 | goto nla_put_failure; | |
56 | ||
57 | val = test_bit(IPOIB_FLAG_UMCAST, &priv->flags); | |
58 | if (nla_put_u16(skb, IFLA_IPOIB_UMCAST, val)) | |
59 | goto nla_put_failure; | |
60 | ||
61 | return 0; | |
62 | ||
63 | nla_put_failure: | |
64 | return -EMSGSIZE; | |
65 | } | |
66 | ||
67 | static int ipoib_changelink(struct net_device *dev, | |
68 | struct nlattr *tb[], struct nlattr *data[]) | |
69 | { | |
70 | u16 mode, umcast; | |
71 | int ret = 0; | |
72 | ||
73 | if (data[IFLA_IPOIB_MODE]) { | |
74 | mode = nla_get_u16(data[IFLA_IPOIB_MODE]); | |
75 | if (mode == IPOIB_MODE_DATAGRAM) | |
76 | ret = ipoib_set_mode(dev, "datagram\n"); | |
77 | else if (mode == IPOIB_MODE_CONNECTED) | |
78 | ret = ipoib_set_mode(dev, "connected\n"); | |
79 | else | |
80 | ret = -EINVAL; | |
81 | ||
82 | if (ret < 0) | |
83 | goto out_err; | |
84 | } | |
85 | ||
86 | if (data[IFLA_IPOIB_UMCAST]) { | |
87 | umcast = nla_get_u16(data[IFLA_IPOIB_UMCAST]); | |
88 | ipoib_set_umcast(dev, umcast); | |
89 | } | |
90 | ||
91 | out_err: | |
92 | return ret; | |
93 | } | |
94 | ||
9baa0b03 OG |
95 | static int ipoib_new_child_link(struct net *src_net, struct net_device *dev, |
96 | struct nlattr *tb[], struct nlattr *data[]) | |
97 | { | |
98 | struct net_device *pdev; | |
99 | struct ipoib_dev_priv *ppriv; | |
100 | u16 child_pkey; | |
101 | int err; | |
102 | ||
103 | if (!tb[IFLA_LINK]) | |
104 | return -EINVAL; | |
105 | ||
106 | pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); | |
0d68fc4f | 107 | if (!pdev || pdev->type != ARPHRD_INFINIBAND) |
9baa0b03 OG |
108 | return -ENODEV; |
109 | ||
110 | ppriv = netdev_priv(pdev); | |
111 | ||
112 | if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) { | |
113 | ipoib_warn(ppriv, "child creation disallowed for child devices\n"); | |
114 | return -EINVAL; | |
115 | } | |
116 | ||
117 | if (!data || !data[IFLA_IPOIB_PKEY]) { | |
118 | ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n"); | |
119 | child_pkey = ppriv->pkey; | |
120 | } else | |
121 | child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]); | |
122 | ||
3d790a4c OG |
123 | if (child_pkey == 0 || child_pkey == 0x8000) |
124 | return -EINVAL; | |
125 | ||
126 | /* | |
127 | * Set the full membership bit, so that we join the right | |
128 | * broadcast group, etc. | |
129 | */ | |
130 | child_pkey |= 0x8000; | |
131 | ||
9baa0b03 OG |
132 | err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD); |
133 | ||
862096a8 OG |
134 | if (!err && data) |
135 | err = ipoib_changelink(dev, tb, data); | |
9baa0b03 OG |
136 | return err; |
137 | } | |
138 | ||
139 | static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head *head) | |
140 | { | |
141 | struct ipoib_dev_priv *priv, *ppriv; | |
142 | ||
143 | priv = netdev_priv(dev); | |
144 | ppriv = netdev_priv(priv->parent); | |
145 | ||
f47944cc | 146 | down_write(&ppriv->vlan_rwsem); |
9baa0b03 OG |
147 | unregister_netdevice_queue(dev, head); |
148 | list_del(&priv->list); | |
f47944cc | 149 | up_write(&ppriv->vlan_rwsem); |
9baa0b03 OG |
150 | } |
151 | ||
152 | static size_t ipoib_get_size(const struct net_device *dev) | |
153 | { | |
862096a8 OG |
154 | return nla_total_size(2) + /* IFLA_IPOIB_PKEY */ |
155 | nla_total_size(2) + /* IFLA_IPOIB_MODE */ | |
156 | nla_total_size(2); /* IFLA_IPOIB_UMCAST */ | |
9baa0b03 OG |
157 | } |
158 | ||
159 | static struct rtnl_link_ops ipoib_link_ops __read_mostly = { | |
160 | .kind = "ipoib", | |
161 | .maxtype = IFLA_IPOIB_MAX, | |
162 | .policy = ipoib_policy, | |
163 | .priv_size = sizeof(struct ipoib_dev_priv), | |
164 | .setup = ipoib_setup, | |
165 | .newlink = ipoib_new_child_link, | |
862096a8 | 166 | .changelink = ipoib_changelink, |
9baa0b03 OG |
167 | .dellink = ipoib_unregister_child_dev, |
168 | .get_size = ipoib_get_size, | |
862096a8 | 169 | .fill_info = ipoib_fill_info, |
9baa0b03 OG |
170 | }; |
171 | ||
172 | int __init ipoib_netlink_init(void) | |
173 | { | |
174 | return rtnl_link_register(&ipoib_link_ops); | |
175 | } | |
176 | ||
177 | void __exit ipoib_netlink_fini(void) | |
178 | { | |
179 | rtnl_link_unregister(&ipoib_link_ops); | |
180 | } | |
181 | ||
182 | MODULE_ALIAS_RTNL_LINK("ipoib"); |