2 * Copyright (c) 2012 Mellanox Technologies. - All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #include <linux/netdevice.h>
34 #include <linux/if_arp.h> /* For ARPHRD_xxx */
35 #include <linux/module.h>
36 #include <net/rtnetlink.h>
39 static const struct nla_policy ipoib_policy[IFLA_IPOIB_MAX + 1] = {
40 [IFLA_IPOIB_PKEY] = { .type = NLA_U16 },
41 [IFLA_IPOIB_MODE] = { .type = NLA_U16 },
42 [IFLA_IPOIB_UMCAST] = { .type = NLA_U16 },
45 static unsigned int ipoib_get_max_num_queues(void)
47 return min_t(unsigned int, num_possible_cpus(), 128);
50 static int ipoib_fill_info(struct sk_buff *skb, const struct net_device *dev)
52 struct ipoib_dev_priv *priv = netdev_priv(dev);
55 if (nla_put_u16(skb, IFLA_IPOIB_PKEY, priv->pkey))
58 val = test_bit(IPOIB_FLAG_ADMIN_CM, &priv->flags);
59 if (nla_put_u16(skb, IFLA_IPOIB_MODE, val))
62 val = test_bit(IPOIB_FLAG_UMCAST, &priv->flags);
63 if (nla_put_u16(skb, IFLA_IPOIB_UMCAST, val))
72 static int ipoib_changelink(struct net_device *dev,
73 struct nlattr *tb[], struct nlattr *data[])
78 if (data[IFLA_IPOIB_MODE]) {
79 mode = nla_get_u16(data[IFLA_IPOIB_MODE]);
80 if (mode == IPOIB_MODE_DATAGRAM)
81 ret = ipoib_set_mode(dev, "datagram\n");
82 else if (mode == IPOIB_MODE_CONNECTED)
83 ret = ipoib_set_mode(dev, "connected\n");
91 if (data[IFLA_IPOIB_UMCAST]) {
92 umcast = nla_get_u16(data[IFLA_IPOIB_UMCAST]);
93 ipoib_set_umcast(dev, umcast);
100 static int ipoib_new_child_link(struct net *src_net, struct net_device *dev,
101 struct nlattr *tb[], struct nlattr *data[])
103 struct net_device *pdev;
104 struct ipoib_dev_priv *ppriv;
111 pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK]));
112 if (!pdev || pdev->type != ARPHRD_INFINIBAND)
115 ppriv = netdev_priv(pdev);
117 if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) {
118 ipoib_warn(ppriv, "child creation disallowed for child devices\n");
122 if (!data || !data[IFLA_IPOIB_PKEY]) {
123 ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n");
124 child_pkey = ppriv->pkey;
126 child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]);
128 if (child_pkey == 0 || child_pkey == 0x8000)
132 * Set the full membership bit, so that we join the right
133 * broadcast group, etc.
135 child_pkey |= 0x8000;
137 err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD);
140 err = ipoib_changelink(dev, tb, data);
144 static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head *head)
146 struct ipoib_dev_priv *priv, *ppriv;
148 priv = netdev_priv(dev);
149 ppriv = netdev_priv(priv->parent);
151 down_write(&ppriv->vlan_rwsem);
152 unregister_netdevice_queue(dev, head);
153 list_del(&priv->list);
154 up_write(&ppriv->vlan_rwsem);
157 static size_t ipoib_get_size(const struct net_device *dev)
159 return nla_total_size(2) + /* IFLA_IPOIB_PKEY */
160 nla_total_size(2) + /* IFLA_IPOIB_MODE */
161 nla_total_size(2); /* IFLA_IPOIB_UMCAST */
164 static struct rtnl_link_ops ipoib_link_ops __read_mostly = {
166 .maxtype = IFLA_IPOIB_MAX,
167 .policy = ipoib_policy,
168 .priv_size = sizeof(struct ipoib_dev_priv),
169 .setup = ipoib_setup,
170 .newlink = ipoib_new_child_link,
171 .changelink = ipoib_changelink,
172 .dellink = ipoib_unregister_child_dev,
173 .get_size = ipoib_get_size,
174 .fill_info = ipoib_fill_info,
175 .get_num_rx_queues = ipoib_get_max_num_queues,
176 .get_num_tx_queues = ipoib_get_max_num_queues,
179 int __init ipoib_netlink_init(void)
181 return rtnl_link_register(&ipoib_link_ops);
184 void __exit ipoib_netlink_fini(void)
186 rtnl_link_unregister(&ipoib_link_ops);
189 MODULE_ALIAS_RTNL_LINK("ipoib");