mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 05:11:48 +00:00
2d8331792e
They are guarded with NETLINK_DISABLE compile time options, so if CONFIG_NET is disabled, no linking errors occur. Bug noticed by Adrian Bunk <bunk@stusta.de>. Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/*
|
|
* w1_netlink.c
|
|
*
|
|
* Copyright (c) 2003 Evgeniy Polyakov <johnpol@2ka.mipt.ru>
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <linux/skbuff.h>
|
|
#include <linux/netlink.h>
|
|
|
|
#include "w1.h"
|
|
#include "w1_log.h"
|
|
#include "w1_netlink.h"
|
|
|
|
#ifndef NETLINK_DISABLED
|
|
void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
|
|
{
|
|
unsigned int size;
|
|
struct sk_buff *skb;
|
|
struct w1_netlink_msg *data;
|
|
struct nlmsghdr *nlh;
|
|
|
|
if (!dev->nls)
|
|
return;
|
|
|
|
size = NLMSG_SPACE(sizeof(struct w1_netlink_msg));
|
|
|
|
skb = alloc_skb(size, GFP_ATOMIC);
|
|
if (!skb) {
|
|
dev_err(&dev->dev, "skb_alloc() failed.\n");
|
|
return;
|
|
}
|
|
|
|
nlh = NLMSG_PUT(skb, 0, dev->seq++, NLMSG_DONE, size - sizeof(*nlh));
|
|
|
|
data = (struct w1_netlink_msg *)NLMSG_DATA(nlh);
|
|
|
|
memcpy(data, msg, sizeof(struct w1_netlink_msg));
|
|
|
|
NETLINK_CB(skb).dst_group = dev->groups;
|
|
netlink_broadcast(dev->nls, skb, 0, dev->groups, GFP_ATOMIC);
|
|
|
|
nlmsg_failure:
|
|
return;
|
|
}
|
|
|
|
int dev_init_netlink(struct w1_master *dev)
|
|
{
|
|
dev->nls = netlink_kernel_create(NETLINK_W1, 1, NULL, THIS_MODULE);
|
|
if (!dev->nls) {
|
|
printk(KERN_ERR "Failed to create new netlink socket(%u) for w1 master %s.\n",
|
|
NETLINK_W1, dev->dev.bus_id);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void dev_fini_netlink(struct w1_master *dev)
|
|
{
|
|
if (dev->nls && dev->nls->sk_socket)
|
|
sock_release(dev->nls->sk_socket);
|
|
}
|
|
#else
|
|
#warning Netlink support is disabled. Please compile with NET support enabled.
|
|
|
|
void w1_netlink_send(struct w1_master *dev, struct w1_netlink_msg *msg)
|
|
{
|
|
}
|
|
|
|
int dev_init_netlink(struct w1_master *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void dev_fini_netlink(struct w1_master *dev)
|
|
{
|
|
}
|
|
#endif
|