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
= kcalloc(32, sizeof(uint32_t), GFP_KERNEL
);
43 pr_debug("%s\n", __func__
);
48 hdr
= genlmsg_put(msg
, 0, seq
, &nl802154_family
, flags
,
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
->supported
.channels
[i
])
60 buf
[pages
++] = phy
->supported
.channels
[i
] | (i
<< 27);
63 nla_put(msg
, IEEE802154_ATTR_CHANNEL_PAGE_LIST
,
64 pages
* sizeof(uint32_t), buf
))
68 genlmsg_end(msg
, hdr
);
73 genlmsg_cancel(msg
, hdr
);
79 int ieee802154_list_phy(struct sk_buff
*skb
, struct genl_info
*info
)
81 /* Request for interface name, index, type, IEEE address,
82 * PAN Id, short address
89 pr_debug("%s\n", __func__
);
91 if (!info
->attrs
[IEEE802154_ATTR_PHY_NAME
])
94 name
= nla_data(info
->attrs
[IEEE802154_ATTR_PHY_NAME
]);
95 if (name
[nla_len(info
->attrs
[IEEE802154_ATTR_PHY_NAME
]) - 1] != '\0')
96 return -EINVAL
; /* phy name should be null-terminated */
98 phy
= wpan_phy_find(name
);
102 msg
= nlmsg_new(NLMSG_DEFAULT_SIZE
, GFP_KERNEL
);
106 rc
= ieee802154_nl_fill_phy(msg
, info
->snd_portid
, info
->snd_seq
,
113 return genlmsg_reply(msg
, info
);
121 struct dump_phy_data
{
123 struct netlink_callback
*cb
;
127 static int ieee802154_dump_phy_iter(struct wpan_phy
*phy
, void *_data
)
130 struct dump_phy_data
*data
= _data
;
132 pr_debug("%s\n", __func__
);
134 if (data
->idx
++ < data
->s_idx
)
137 rc
= ieee802154_nl_fill_phy(data
->skb
,
138 NETLINK_CB(data
->cb
->skb
).portid
,
139 data
->cb
->nlh
->nlmsg_seq
,
151 int ieee802154_dump_phy(struct sk_buff
*skb
, struct netlink_callback
*cb
)
153 struct dump_phy_data data
= {
156 .s_idx
= cb
->args
[0],
160 pr_debug("%s\n", __func__
);
162 wpan_phy_for_each(ieee802154_dump_phy_iter
, &data
);
164 cb
->args
[0] = data
.idx
;
169 int ieee802154_add_iface(struct sk_buff
*skb
, struct genl_info
*info
)
172 struct wpan_phy
*phy
;
176 struct net_device
*dev
;
177 int type
= __IEEE802154_DEV_INVALID
;
178 unsigned char name_assign_type
;
180 pr_debug("%s\n", __func__
);
182 if (!info
->attrs
[IEEE802154_ATTR_PHY_NAME
])
185 name
= nla_data(info
->attrs
[IEEE802154_ATTR_PHY_NAME
]);
186 if (name
[nla_len(info
->attrs
[IEEE802154_ATTR_PHY_NAME
]) - 1] != '\0')
187 return -EINVAL
; /* phy name should be null-terminated */
189 if (info
->attrs
[IEEE802154_ATTR_DEV_NAME
]) {
190 devname
= nla_data(info
->attrs
[IEEE802154_ATTR_DEV_NAME
]);
191 if (devname
[nla_len(info
->attrs
[IEEE802154_ATTR_DEV_NAME
]) - 1]
193 return -EINVAL
; /* phy name should be null-terminated */
194 name_assign_type
= NET_NAME_USER
;
197 name_assign_type
= NET_NAME_ENUM
;
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 (info
->attrs
[IEEE802154_ATTR_HW_ADDR
] &&
212 nla_len(info
->attrs
[IEEE802154_ATTR_HW_ADDR
]) !=
213 IEEE802154_ADDR_LEN
) {
215 goto nla_put_failure
;
218 if (info
->attrs
[IEEE802154_ATTR_DEV_TYPE
]) {
219 type
= nla_get_u8(info
->attrs
[IEEE802154_ATTR_DEV_TYPE
]);
220 if (type
>= __IEEE802154_DEV_MAX
) {
222 goto nla_put_failure
;
226 dev
= rdev_add_virtual_intf_deprecated(wpan_phy_to_rdev(phy
), devname
,
227 name_assign_type
, type
);
230 goto nla_put_failure
;
234 if (info
->attrs
[IEEE802154_ATTR_HW_ADDR
]) {
235 struct sockaddr addr
;
237 addr
.sa_family
= ARPHRD_IEEE802154
;
238 nla_memcpy(&addr
.sa_data
, info
->attrs
[IEEE802154_ATTR_HW_ADDR
],
239 IEEE802154_ADDR_LEN
);
241 /* strangely enough, some callbacks (inetdev_event) from
242 * dev_set_mac_address require RTNL_LOCK
245 rc
= dev_set_mac_address(dev
, &addr
, NULL
);
251 if (nla_put_string(msg
, IEEE802154_ATTR_PHY_NAME
, wpan_phy_name(phy
)) ||
252 nla_put_string(msg
, IEEE802154_ATTR_DEV_NAME
, dev
->name
))
253 goto nla_put_failure
;
258 return ieee802154_nl_reply(msg
, info
);
261 rtnl_lock(); /* del_iface must be called with RTNL lock */
262 rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy
), dev
);
272 int ieee802154_del_iface(struct sk_buff
*skb
, struct genl_info
*info
)
275 struct wpan_phy
*phy
;
278 struct net_device
*dev
;
280 pr_debug("%s\n", __func__
);
282 if (!info
->attrs
[IEEE802154_ATTR_DEV_NAME
])
285 name
= nla_data(info
->attrs
[IEEE802154_ATTR_DEV_NAME
]);
286 if (name
[nla_len(info
->attrs
[IEEE802154_ATTR_DEV_NAME
]) - 1] != '\0')
287 return -EINVAL
; /* name should be null-terminated */
290 dev
= dev_get_by_name(genl_info_net(info
), name
);
293 if (dev
->type
!= ARPHRD_IEEE802154
)
296 phy
= dev
->ieee802154_ptr
->wpan_phy
;
298 get_device(&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
);
329 rdev_del_virtual_intf_deprecated(wpan_phy_to_rdev(phy
), dev
);
331 /* We don't have device anymore */
337 if (nla_put_string(msg
, IEEE802154_ATTR_PHY_NAME
, wpan_phy_name(phy
)) ||
338 nla_put_string(msg
, IEEE802154_ATTR_DEV_NAME
, name
))
339 goto nla_put_failure
;
342 return ieee802154_nl_reply(msg
, info
);