Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Jason A. Donenfeld |
205 |
47.34% |
2 |
11.76% |
| Pravin B Shelar |
147 |
33.95% |
1 |
5.88% |
| Linus Torvalds (pre-git) |
55 |
12.70% |
7 |
41.18% |
| Eric Dumazet |
11 |
2.54% |
2 |
11.76% |
| Hideaki Yoshifuji / 吉藤英明 |
6 |
1.39% |
1 |
5.88% |
| Brian Haley |
4 |
0.92% |
1 |
5.88% |
| David S. Miller |
2 |
0.46% |
1 |
5.88% |
| Denis V. Lunev |
2 |
0.46% |
1 |
5.88% |
| Greg Kroah-Hartman |
1 |
0.23% |
1 |
5.88% |
| Total |
433 |
|
17 |
|
// SPDX-License-Identifier: GPL-2.0
#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)
#if !IS_BUILTIN(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,
const struct inet6_skb_parm *parm)
{
ip6_icmp_send_t *send;
rcu_read_lock();
send = rcu_dereference(ip6_icmp_send);
if (send)
send(skb, type, code, info, NULL, parm);
rcu_read_unlock();
}
EXPORT_SYMBOL(__icmpv6_send);
#endif
#if IS_ENABLED(CONFIG_NF_NAT)
#include <net/netfilter/nf_conntrack.h>
void icmpv6_ndo_send(struct sk_buff *skb_in, u8 type, u8 code, __u32 info)
{
struct inet6_skb_parm parm = { 0 };
struct sk_buff *cloned_skb = NULL;
enum ip_conntrack_info ctinfo;
struct in6_addr orig_ip;
struct nf_conn *ct;
ct = nf_ct_get(skb_in, &ctinfo);
if (!ct || !(ct->status & IPS_SRC_NAT)) {
__icmpv6_send(skb_in, type, code, info, &parm);
return;
}
if (skb_shared(skb_in))
skb_in = cloned_skb = skb_clone(skb_in, GFP_ATOMIC);
if (unlikely(!skb_in || skb_network_header(skb_in) < skb_in->head ||
(skb_network_header(skb_in) + sizeof(struct ipv6hdr)) >
skb_tail_pointer(skb_in) || skb_ensure_writable(skb_in,
skb_network_offset(skb_in) + sizeof(struct ipv6hdr))))
goto out;
orig_ip = ipv6_hdr(skb_in)->saddr;
ipv6_hdr(skb_in)->saddr = ct->tuplehash[0].tuple.src.u3.in6;
__icmpv6_send(skb_in, type, code, info, &parm);
ipv6_hdr(skb_in)->saddr = orig_ip;
out:
consume_skb(cloned_skb);
}
EXPORT_SYMBOL(icmpv6_ndo_send);
#endif
#endif