void udpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
int type, int code, int offset, __u32 info)
{
struct ipv6hdr *hdr = (struct ipv6hdr*)skb->data;
struct net_device *dev = skb->dev;
struct in6_addr *saddr = &hdr->saddr;
struct in6_addr *daddr = &hdr->daddr;
struct udphdr *uh = (struct udphdr*)(skb->data+offset);
struct sock *sk;
int err;
sk = udp_v6_lookup(daddr, uh->dest, saddr, uh->source, dev->ifindex);
if (sk == NULL)
return;
if (!icmpv6_err_convert(type, code, &err) &&
!sk->net_pinfo.af_inet6.recverr)
goto out;
if (sk->state!=TCP_ESTABLISHED &&
!sk->net_pinfo.af_inet6.recverr)
goto out;
if (sk->net_pinfo.af_inet6.recverr)
ipv6_icmp_error(sk, skb, err, uh->dest, ntohl(info), (u8 *)(uh+1));
sk->err = err;
sk->error_report(sk);
out:
sock_put(sk);
}
void rawv6_err(struct sock *sk, struct sk_buff *skb, struct ipv6hdr *hdr,
struct inet6_skb_parm *opt,
int type, int code, unsigned char *buff, u32 info)
{
int err;
int harderr;
if (buff > skb->tail)
return;
/* Report error on raw socket, if:
1. User requested recverr.
2. Socket is connected (otherwise the error indication
is useless without recverr and error is hard.
*/
if (!sk->net_pinfo.af_inet6.recverr && sk->state != TCP_ESTABLISHED)
return;
harderr = icmpv6_err_convert(type, code, &err);
if (type == ICMPV6_PKT_TOOBIG)
harderr = (sk->net_pinfo.af_inet6.pmtudisc == IPV6_PMTUDISC_DO);
if (sk->net_pinfo.af_inet6.recverr)
ipv6_icmp_error(sk, skb, err, 0, ntohl(info), buff);
if (sk->net_pinfo.af_inet6.recverr || harderr) {
sk->err = err;
sk->error_report(sk);
}
}
