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 <net/netlink.h>
28 #include <net/genetlink.h>
29 #include <net/wpan-phy.h>
30 #include <net/af_ieee802154.h>
31 #include <net/ieee802154_netdev.h>
32 #include <net/rtnetlink.h> /* for rtnl_{un,}lock */
33 #include <linux/nl802154.h>
35 #include "ieee802154.h"
37 static int ieee802154_nl_fill_phy(struct sk_buff *msg, u32 pid,
38 u32 seq, int flags, struct wpan_phy *phy)
42 uint32_t *buf = kzalloc(32 * sizeof(uint32_t), GFP_KERNEL);
44 pr_debug("%s\n", __func__);
49 hdr = genlmsg_put(msg, 0, seq, &nl802154_family, flags,
54 mutex_lock(&phy->pib_lock);
55 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 for (i = 0; i < 32; i++) {
60 if (phy->channels_supported[i])
61 buf[pages++] = phy->channels_supported[i] | (i << 27);
64 NLA_PUT(msg, IEEE802154_ATTR_CHANNEL_PAGE_LIST,
65 pages * sizeof(uint32_t), buf);
67 mutex_unlock(&phy->pib_lock);
68 return genlmsg_end(msg, hdr);
71 mutex_unlock(&phy->pib_lock);
72 genlmsg_cancel(msg, hdr);
78 static int ieee802154_list_phy(struct sk_buff *skb,
79 struct genl_info *info)
81 /* Request for interface name, index, type, IEEE address,
82 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 */
98 phy = wpan_phy_find(name);
102 msg = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
106 rc = ieee802154_nl_fill_phy(msg, info->snd_pid, info->snd_seq,
113 return genlmsg_reply(msg, info);
122 struct dump_phy_data {
124 struct netlink_callback *cb;
128 static int ieee802154_dump_phy_iter(struct wpan_phy *phy, void *_data)
131 struct dump_phy_data *data = _data;
133 pr_debug("%s\n", __func__);
135 if (data->idx++ < data->s_idx)
138 rc = ieee802154_nl_fill_phy(data->skb,
139 NETLINK_CB(data->cb->skb).pid,
140 data->cb->nlh->nlmsg_seq,
152 static int ieee802154_dump_phy(struct sk_buff *skb,
153 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 static int ieee802154_add_iface(struct sk_buff *skb,
172 struct genl_info *info)
175 struct wpan_phy *phy;
179 struct net_device *dev;
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 dev = phy->add_iface(phy, devname);
218 goto nla_put_failure;
221 NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy));
222 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, dev->name);
228 return ieee802154_nl_reply(msg, info);
237 static int ieee802154_del_iface(struct sk_buff *skb,
238 struct genl_info *info)
241 struct wpan_phy *phy;
244 struct net_device *dev;
246 pr_debug("%s\n", __func__);
248 if (!info->attrs[IEEE802154_ATTR_DEV_NAME])
251 name = nla_data(info->attrs[IEEE802154_ATTR_DEV_NAME]);
252 if (name[nla_len(info->attrs[IEEE802154_ATTR_DEV_NAME]) - 1] != '\0')
253 return -EINVAL; /* name should be null-terminated */
255 dev = dev_get_by_name(genl_info_net(info), name);
259 phy = ieee802154_mlme_ops(dev)->get_phy(dev);
263 /* phy name is optional, but should be checked if it's given */
264 if (info->attrs[IEEE802154_ATTR_PHY_NAME]) {
265 struct wpan_phy *phy2;
268 nla_data(info->attrs[IEEE802154_ATTR_PHY_NAME]);
269 if (pname[nla_len(info->attrs[IEEE802154_ATTR_PHY_NAME]) - 1]
271 /* name should be null-terminated */
274 phy2 = wpan_phy_find(pname);
286 msg = ieee802154_nl_new_reply(info, 0, IEEE802154_DEL_IFACE);
290 if (!phy->del_iface) {
292 goto nla_put_failure;
296 phy->del_iface(phy, dev);
298 /* We don't have device anymore */
305 NLA_PUT_STRING(msg, IEEE802154_ATTR_PHY_NAME, wpan_phy_name(phy));
306 NLA_PUT_STRING(msg, IEEE802154_ATTR_DEV_NAME, name);
310 return ieee802154_nl_reply(msg, info);
322 static struct genl_ops ieee802154_phy_ops[] = {
323 IEEE802154_DUMP(IEEE802154_LIST_PHY, ieee802154_list_phy,
324 ieee802154_dump_phy),
325 IEEE802154_OP(IEEE802154_ADD_IFACE, ieee802154_add_iface),
326 IEEE802154_OP(IEEE802154_DEL_IFACE, ieee802154_del_iface),
330 * No need to unregister as family unregistration will do it.
332 int nl802154_phy_register(void)
337 for (i = 0; i < ARRAY_SIZE(ieee802154_phy_ops); i++) {
338 rc = genl_register_ops(&nl802154_family,
339 &ieee802154_phy_ops[i]);