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))
60 for (i = 0; i < 32; i++) {
61 if (phy->channels_supported[i])
62 buf[pages++] = phy->channels_supported[i] | (i << 27);
65 nla_put(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
66 pages * sizeof(uint32_t), buf))
68 mutex_unlock(&phy->pib_lock);
70 return genlmsg_end(msg, hdr);
73 mutex_unlock(&phy->pib_lock);
74 genlmsg_cancel(msg, hdr);
80 int ieee802154_list_phy(struct sk_buff *skb, struct genl_info *info)
82 /* Request for interface name, index, type, IEEE address,
83 * 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);
123 struct dump_phy_data {
125 struct netlink_callback *cb;
129 static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
132 struct dump_phy_data *data = _data;
134 pr_debug("%s\n", __func__);
136 if (data->idx++ < data->s_idx)
139 rc = ieee802154_nl_fill_phy(data->skb,
140 NETLINK_CB(data->cb->skb).portid,
141 data->cb->nlh->nlmsg_seq,
153 int ieee802154_dump_phy(struct sk_buff *skb, struct netlink_callback *cb)
155 struct dump_phy_data data = {
158 .s_idx = cb->args[0],
162 pr_debug("%s\n", __func__);
164 wpan_phy_for_each(ieee802154_dump_phy_iter, &data);
166 cb->args[0] = data.idx;
171 int ieee802154_add_iface(struct sk_buff *skb, struct genl_info *info)
174 struct wpan_phy *phy;
178 struct net_device *dev;
179 int type = __IEEE802154_DEV_INVALID;
181 pr_debug("%s\n", __func__);
183 if (!info->attrs[IEEE802154_ATTR_PHY_NAME])
186 name = nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
187 if (name[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1] != '\0')
188 return -EINVAL; /* phy name should be null-terminated */
190 if (info->attrs[IEEE802154_ATTR_DEV_NAME]) {
191 devname = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
192 if (devname[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1]
194 return -EINVAL; /* phy name should be null-terminated */
199 if (strlen(devname) >= IFNAMSIZ)
200 return -ENAMETOOLONG;
202 phy = wpan_phy_find(name);
206 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_ADD_IFACE);
210 if (!phy->add_iface) {
212 goto nla_put_failure;
215 if (info->attrs[IEEE802154_ATTR_HW_ADDR] &&
216 nla_len(info->attrs[IEEE802154_ATTR_HW_ADDR]) !=
217 IEEE802154_ADDR_LEN) {
219 goto nla_put_failure;
222 if (info->attrs[IEEE802154_ATTR_DEV_TYPE]) {
223 type = nla_get_u8(info->attrs[IEEE802154_ATTR_DEV_TYPE]);
224 if (type >= __IEEE802154_DEV_MAX) {
226 goto nla_put_failure;
230 dev = phy->add_iface(phy, devname, type);
233 goto nla_put_failure;
236 if (info->attrs[IEEE802154_ATTR_HW_ADDR]) {
237 struct sockaddr addr;
239 addr.sa_family = ARPHRD_IEEE802154;
240 nla_memcpy(&addr.sa_data, info->attrs[IEEE802154_ATTR_HW_ADDR],
241 IEEE802154_ADDR_LEN);
243 /* strangely enough, some callbacks (inetdev_event) from
244 * dev_set_mac_address require RTNL_LOCK
247 rc = dev_set_mac_address(dev, &addr);
253 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
254 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, dev->name))
255 goto nla_put_failure;
260 return ieee802154_nl_reply(msg, info);
263 rtnl_lock(); /* del_iface must be called with RTNL lock */
264 phy->del_iface(phy, dev);
274 int ieee802154_del_iface(struct sk_buff *skb, struct genl_info *info)
277 struct wpan_phy *phy;
280 struct net_device *dev;
282 pr_debug("%s\n", __func__);
284 if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
287 name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
288 if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
289 return -EINVAL; /* name should be null-terminated */
291 dev = dev_get_by_name(genl_info_net(info), name);
295 phy = ieee802154_mlme_ops(dev)->get_phy(dev);
299 /* phy name is optional, but should be checked if it's given */
300 if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
301 struct wpan_phy *phy2;
304 nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
305 if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
307 /* name should be null-terminated */
310 phy2 = wpan_phy_find(pname);
322 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
326 if (!phy->del_iface) {
328 goto nla_put_failure;
332 phy->del_iface(phy, dev);
334 /* We don't have device anymore */
340 if (nla_put_string(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy)) ||
341 nla_put_string(msg, IEEE802154_ATTR_DEV_NAME, name))
342 goto nla_put_failure;
345 return ieee802154_nl_reply(msg, info);