blob: 2a82fb055c70bfb2ef4a25dff024da1c681bbd13 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * w1_netlink.c
3 *
4 * Copyright (c) 2003 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 */
21
22#include <linux/skbuff.h>
23#include <linux/netlink.h>
24
25#include "w1.h"
26#include "w1_log.h"
27#include "w1_netlink.h"
28
29#ifndef NETLINK_DISABLED
30void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
31{
32 unsigned int size;
33 struct sk_buff *skb;
34 struct w1_netlink_msg *data;
35 struct nlmsghdr *nlh;
36
37 if (!dev->nls)
38 return;
39
40 size = NLMSG_SPACE(sizeof(struct w1_netlink_msg));
41
42 skb = alloc_skb(size, GFP_ATOMIC);
43 if (!skb) {
44 dev_err(&dev->dev, "skb_alloc() failed.\n");
45 return;
46 }
47
48 nlh = NLMSG_PUT(skb, 0, dev->seq++, NLMSG_DONE, size - sizeof(*nlh));
49
50 data = (struct w1_netlink_msg *)NLMSG_DATA(nlh);
51
52 memcpy(data, msg, sizeof(struct w1_netlink_msg));
53
54 NETLINK_CB(skb).dst_groups = dev->groups;
55 netlink_broadcast(dev->nls, skb, 0, dev->groups, GFP_ATOMIC);
56
57nlmsg_failure:
58 return;
59}
60#else
61#warning Netlink support is disabled. Please compile with NET support enabled.
62
63void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
64{
65}
66#endif