48 строки
938 B
C
48 строки
938 B
C
#include <linux/export.h>
|
|
#include <linux/icmpv6.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/spinlock.h>
|
|
|
|
#include <net/ipv6.h>
|
|
|
|
#if IS_ENABLED(CONFIG_IPV6)
|
|
|
|
static ip6_icmp_send_t __rcu *ip6_icmp_send;
|
|
|
|
int inet6_register_icmp_sender(ip6_icmp_send_t *fn)
|
|
{
|
|
return (cmpxchg((ip6_icmp_send_t **)&ip6_icmp_send, NULL, fn) == NULL) ?
|
|
0 : -EBUSY;
|
|
}
|
|
EXPORT_SYMBOL(inet6_register_icmp_sender);
|
|
|
|
int inet6_unregister_icmp_sender(ip6_icmp_send_t *fn)
|
|
{
|
|
int ret;
|
|
|
|
ret = (cmpxchg((ip6_icmp_send_t **)&ip6_icmp_send, fn, NULL) == fn) ?
|
|
0 : -EINVAL;
|
|
|
|
synchronize_net();
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(inet6_unregister_icmp_sender);
|
|
|
|
void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info)
|
|
{
|
|
ip6_icmp_send_t *send;
|
|
|
|
rcu_read_lock();
|
|
send = rcu_dereference(ip6_icmp_send);
|
|
|
|
if (!send)
|
|
goto out;
|
|
send(skb, type, code, info, NULL);
|
|
out:
|
|
rcu_read_unlock();
|
|
}
|
|
EXPORT_SYMBOL(icmpv6_send);
|
|
#endif
|