2 * Netlink inteface 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.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 * Sergey Lapin <slapin@ossfans.org>
21 * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
22 * Maxim Osipov <maxim.osipov@siemens.com>
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/if_arp.h>
28 #include <net/netlink.h>
29 #include <net/genetlink.h>
30 #include <net/wpan-phy.h>
31 #include <net/af_ieee802154.h>
32 #include <net/ieee802154_netdev.h>
33 #include <net/rtnetlink.h> /* for rtnl_{un,}lock */
34 #include <linux/nl802154.h>
36 #include "ieee802154.h"
38 static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 portid,
39 u32 seq, int flags, struct wpan_phy *phy)
43 uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL);
45 pr_debug("%s\n", __func__);
50 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
55 mutex_lock(&phy->pib_lock);
56 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
57 nla_put_u8(msg, IEEE802154_ATTR_PAGE, phy->current_page) ||
58 nla_put_u8(msg, IEEE802154_ATTR_CHANNEL, phy->current_channel) ||
59 nla_put_s8(msg, IEEE802154_ATTR_TXPOWER, phy->transmit_power))
61 for (i = 0; i < 32; i++) {
62 if (phy->channels_supported[i])
63 buf[pages++] = phy->channels_supported[i] | (i << 27);
66 nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
67 pages * sizeof(uint32_t), buf))
69 mutex_unlock(&phy->pib_lock);
71 return genlmsg_end(msg, hdr);
74 mutex_unlock(&phy->pib_lock);
75 genlmsg_cancel(msg, hdr);
81 int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info)
83 /* Request for interface name, index, type, IEEE address,
84 PAN Id, short address */
90 pr_debug("%s\n", __func__);
92 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
95 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
96 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
97 return -EINVAL; /* phy name should be null-terminated */
100 phy = wpan_phy_find(name);
104 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
108 rc = ieee802154_nl_fill_phy(msg, info->snd_portid, info->snd_seq,
115 return genlmsg_reply(msg, info);
124 struct dump_phy_data {
126 struct netlink_callback *cb;
130 static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
133 struct dump_phy_data *data = _data;
135 pr_debug("%s\n", __func__);
137 if (data->idx++ < data->s_idx)
140 rc = ieee802154_nl_fill_phy(data->skb,
141 NETLINK_CB(data->cb->skb).portid,
142 data->cb->nlh->nlmsg_seq,
154 int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb)
156 struct dump_phy_data data = {
159 .s_idx = cb->args[0],
163 pr_debug("%s\n", __func__);
165 wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
167 cb->args[0] = data.idx;
172 int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
175 struct wpan_phy *phy;
179 struct net_device *dev;
180 int type = __IEEE802154_DEV_INVALID;
182 pr_debug("%s\n", __func__);
184 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
187 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
188 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
189 return -EINVAL; /* phy name should be null-terminated */
191 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
192 devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
193 if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
195 return -EINVAL; /* phy name should be null-terminated */
200 if (strlen(devname) >= IFNAMSIZ)
201 return -ENAMETOOLONG;
203 phy = wpan_phy_find(name);
207 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
211 if (!phy->add_iface) {
213 goto nla_put_failure;
216 if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
217 nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
218 IEEE802154_ADDR_LEN) {
220 goto nla_put_failure;
223 if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
224 type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
225 if (type >= __IEEE802154_DEV_MAX) {
227 goto nla_put_failure;
231 dev = phy->add_iface(phy, devname, type);
234 goto nla_put_failure;
237 if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
238 struct sockaddr addr;
240 addr.sa_family = ARPHRD_IEEE802154;
241 nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
242 IEEE802154_ADDR_LEN);
245 * strangely enough, some callbacks (inetdev_event) from
246 * dev_set_mac_address require RTNL_LOCK
249 rc = dev_set_mac_address(dev, &addr);
255 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
256 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name))
257 goto nla_put_failure;
262 return ieee802154_nl_reply(msg, info);
265 rtnl_lock(); /* del_iface must be called with RTNL lock */
266 phy->del_iface(phy, dev);
276 int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
279 struct wpan_phy *phy;
282 struct net_device *dev;
284 pr_debug("%s\n", __func__);
286 if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
289 name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
290 if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
291 return -EINVAL; /* name should be null-terminated */
293 dev = dev_get_by_name(genl_info_net(info), name);
297 phy = ieee802154_mlme_ops(dev)->get_phy(dev);
301 /* phy name is optional, but should be checked if it's given */
302 if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
303 struct wpan_phy *phy2;
306 nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
307 if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
309 /* name should be null-terminated */
312 phy2 = wpan_phy_find(pname);
324 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
328 if (!phy->del_iface) {
330 goto nla_put_failure;
334 phy->del_iface(phy, dev);
336 /* We don't have device anymore */
342 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
343 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
344 goto nla_put_failure;
347 return ieee802154_nl_reply(msg, info);
359 int ieee802154_set_phyparams(struct sk_buff *skb, struct genl_info *info)
361 struct wpan_phy *phy;
366 pr_debug("%s\n", __func__);
368 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
371 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
372 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
373 return -EINVAL; /* phy name should be null-terminated */
375 txpower = nla_get_s8(info->attrs[IEEE802154_ATTR_TXPOWER]);
377 phy = wpan_phy_find(name);
381 if (!phy->set_txpower)
384 mutex_lock(&phy->pib_lock);
386 rc = phy->set_txpower(phy, txpower);
388 mutex_unlock(&phy->pib_lock);
392 phy->transmit_power = txpower;
394 mutex_unlock(&phy->pib_lock);