2 * Netlink interface for IEEE 802.15.4 stack
4 * Copyright 2007, 2008 Siemens AG
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
16 * Sergey Lapin <slapin@ossfans.org>
17 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
18 * Maxim Osipov <maxim.osipov@siemens.com>
21 #include <linux/kernel.h>
22 #include <linux/slab.h>
23 #include <linux/if_arp.h>
24 #include <net/netlink.h>
25 #include <net/genetlink.h>
26 #include <net/cfg802154.h>
27 #include <net/af_ieee802154.h>
28 #include <net/ieee802154_netdev.h>
29 #include <net/rtnetlink.h> /* for rtnl_{un,}lock */
30 #include <linux/nl802154.h>
32 #include "ieee802154.h"
36 static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
37 u32 seq, int flags, struct wpan_phy *phy)
41 uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL);
43 pr_debug("%s\n", __func__);
48 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
53 mutex_lock(&phy->pib_lock);
54 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
55 nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) ||
56 nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel))
58 for (i = 0; i < 32; i++) {
59 if (phy->channels_supported[i])
60 buf[pages++] = phy->channels_supported[i] | (i << 27);
63 nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
64 pages * sizeof(uint32_t), buf))
66 mutex_unlock(&phy->pib_lock);
68 return genlmsg_end(msg, hdr);
71 mutex_unlock(&phy->pib_lock);
72 genlmsg_cancel(msg, hdr);
78 int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info)
80 /* Request for interface name, index, type, IEEE address,
81 * PAN Id, short address
88 pr_debug("%s\n", __func__);
90 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
93 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
94 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
95 return -EINVAL; /* phy name should be null-terminated */
97 phy = wpan_phy_find(name);
101 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
105 rc = ieee802154_nl_fill_phy(msg, info->snd_portid, info->snd_seq,
112 return genlmsg_reply(msg, info);
120 struct dump_phy_data {
122 struct netlink_callback *cb;
126 static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
129 struct dump_phy_data *data = _data;
131 pr_debug("%s\n", __func__);
133 if (data->idx++ < data->s_idx)
136 rc = ieee802154_nl_fill_phy(data->skb,
137 NETLINK_CB(data->cb->skb).portid,
138 data->cb->nlh->nlmsg_seq,
150 int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb)
152 struct dump_phy_data data = {
155 .s_idx = cb->args[0],
159 pr_debug("%s\n", __func__);
161 wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
163 cb->args[0] = data.idx;
168 int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
171 struct wpan_phy *phy;
175 struct net_device *dev;
176 int type = __IEEE802154_DEV_INVALID;
178 pr_debug("%s\n", __func__);
180 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
183 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
184 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
185 return -EINVAL; /* phy name should be null-terminated */
187 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
188 devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
189 if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
191 return -EINVAL; /* phy name should be null-terminated */
196 if (strlen(devname) >= IFNAMSIZ)
197 return -ENAMETOOLONG;
199 phy = wpan_phy_find(name);
203 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
207 if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
208 nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
209 IEEE802154_ADDR_LEN) {
211 goto nla_put_failure;
214 if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
215 type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
216 if (type >= __IEEE802154_DEV_MAX) {
218 goto nla_put_failure;
222 dev = rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy), devname,
226 goto nla_put_failure;
230 if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
231 struct sockaddr addr;
233 addr.sa_family = ARPHRD_IEEE802154;
234 nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
235 IEEE802154_ADDR_LEN);
237 /* strangely enough, some callbacks (inetdev_event) from
238 * dev_set_mac_address require RTNL_LOCK
241 rc = dev_set_mac_address(dev, &addr);
247 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
248 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name))
249 goto nla_put_failure;
254 return ieee802154_nl_reply(msg, info);
257 rtnl_lock(); /* del_iface must be called with RTNL lock */
258 rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
268 int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
271 struct wpan_phy *phy;
274 struct net_device *dev;
276 pr_debug("%s\n", __func__);
278 if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
281 name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
282 if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
283 return -EINVAL; /* name should be null-terminated */
285 dev = dev_get_by_name(genl_info_net(info), name);
289 phy = dev->ieee802154_ptr->wpan_phy;
291 get_device(&phy->dev);
294 /* phy name is optional, but should be checked if it's given */
295 if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
296 struct wpan_phy *phy2;
299 nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
300 if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
302 /* name should be null-terminated */
305 phy2 = wpan_phy_find(pname);
317 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
322 rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy), dev);
324 /* We don't have device anymore */
330 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
331 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
332 goto nla_put_failure;
335 return ieee802154_nl_reply(msg, info);