| Or Gerlitz | 9baa0b0 | 2012-09-13 05:56:36 +0000 | [diff] [blame^] | 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> |
| 34 | #include <linux/module.h> |
| 35 | #include <net/rtnetlink.h> |
| 36 | #include "ipoib.h" |
| 37 | |
| 38 | static const struct nla_policy ipoib_policy[IFLA_IPOIB_MAX + 1] = { |
| 39 | [IFLA_IPOIB_PKEY] = { .type = NLA_U16 }, |
| 40 | }; |
| 41 | |
| 42 | static int ipoib_new_child_link(struct net *src_net, struct net_device *dev, |
| 43 | struct nlattr *tb[], struct nlattr *data[]) |
| 44 | { |
| 45 | struct net_device *pdev; |
| 46 | struct ipoib_dev_priv *ppriv; |
| 47 | u16 child_pkey; |
| 48 | int err; |
| 49 | |
| 50 | if (!tb[IFLA_LINK]) |
| 51 | return -EINVAL; |
| 52 | |
| 53 | pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
| 54 | if (!pdev) |
| 55 | return -ENODEV; |
| 56 | |
| 57 | ppriv = netdev_priv(pdev); |
| 58 | |
| 59 | if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) { |
| 60 | ipoib_warn(ppriv, "child creation disallowed for child devices\n"); |
| 61 | return -EINVAL; |
| 62 | } |
| 63 | |
| 64 | if (!data || !data[IFLA_IPOIB_PKEY]) { |
| 65 | ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n"); |
| 66 | child_pkey = ppriv->pkey; |
| 67 | } else |
| 68 | child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]); |
| 69 | |
| 70 | err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD); |
| 71 | |
| 72 | return err; |
| 73 | } |
| 74 | |
| 75 | static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head *head) |
| 76 | { |
| 77 | struct ipoib_dev_priv *priv, *ppriv; |
| 78 | |
| 79 | priv = netdev_priv(dev); |
| 80 | ppriv = netdev_priv(priv->parent); |
| 81 | |
| 82 | mutex_lock(&ppriv->vlan_mutex); |
| 83 | unregister_netdevice_queue(dev, head); |
| 84 | list_del(&priv->list); |
| 85 | mutex_unlock(&ppriv->vlan_mutex); |
| 86 | } |
| 87 | |
| 88 | static size_t ipoib_get_size(const struct net_device *dev) |
| 89 | { |
| 90 | return nla_total_size(2); /* IFLA_IPOIB_PKEY */ |
| 91 | } |
| 92 | |
| 93 | static struct rtnl_link_ops ipoib_link_ops __read_mostly = { |
| 94 | .kind = "ipoib", |
| 95 | .maxtype = IFLA_IPOIB_MAX, |
| 96 | .policy = ipoib_policy, |
| 97 | .priv_size = sizeof(struct ipoib_dev_priv), |
| 98 | .setup = ipoib_setup, |
| 99 | .newlink = ipoib_new_child_link, |
| 100 | .dellink = ipoib_unregister_child_dev, |
| 101 | .get_size = ipoib_get_size, |
| 102 | }; |
| 103 | |
| 104 | int __init ipoib_netlink_init(void) |
| 105 | { |
| 106 | return rtnl_link_register(&ipoib_link_ops); |
| 107 | } |
| 108 | |
| 109 | void __exit ipoib_netlink_fini(void) |
| 110 | { |
| 111 | rtnl_link_unregister(&ipoib_link_ops); |
| 112 | } |
| 113 | |
| 114 | MODULE_ALIAS_RTNL_LINK("ipoib"); |