Exemplos de icmpv6_error_message em C++ (Cpp)

Exemplo n.º 1

Arquivo: nf_conntrack_proto_icmpv6.c Projeto: ReneNyffenegger/linux

static int
icmpv6_error(struct net *net, struct nf_conn *tmpl,
	     struct sk_buff *skb, unsigned int dataoff,
	     u8 pf, unsigned int hooknum)
{
	const struct icmp6hdr *icmp6h;
	struct icmp6hdr _ih;
	int type;

	icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
	if (icmp6h == NULL) {
		icmpv6_error_log(skb, net, pf, "short packet");
		return -NF_ACCEPT;
	}

	if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING &&
	    nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
		icmpv6_error_log(skb, net, pf, "ICMPv6 checksum failed");
		return -NF_ACCEPT;
	}

	type = icmp6h->icmp6_type - 130;
	if (type >= 0 && type < sizeof(noct_valid_new) &&
	    noct_valid_new[type]) {
		nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
		return NF_ACCEPT;
	}

	/* is not error message ? */
	if (icmp6h->icmp6_type >= 128)
		return NF_ACCEPT;

	return icmpv6_error_message(net, tmpl, skb, dataoff);
}

Exemplo n.º 2

Arquivo: nf_conntrack_proto_icmpv6.c Projeto: Tigrouzen/k1099

static int
icmpv6_error(struct sk_buff *skb, unsigned int dataoff,
	     enum ip_conntrack_info *ctinfo, int pf, unsigned int hooknum)
{
	const struct icmp6hdr *icmp6h;
	struct icmp6hdr _ih;

	icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
	if (icmp6h == NULL) {
		if (LOG_INVALID(IPPROTO_ICMPV6))
		nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
			      "nf_ct_icmpv6: short packet ");
		return -NF_ACCEPT;
	}

	if (nf_conntrack_checksum && hooknum == NF_INET_PRE_ROUTING &&
	    nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
		nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
			      "nf_ct_icmpv6: ICMPv6 checksum failed\n");
		return -NF_ACCEPT;
	}

	/* is not error message ? */
	if (icmp6h->icmp6_type >= 128)
		return NF_ACCEPT;

	return icmpv6_error_message(skb, dataoff, ctinfo, hooknum);
}

Exemplo n.º 3

Arquivo: nf_conntrack_proto_icmpv6.c Projeto: Albinoman887/pyramid-3.4.10

static int
icmpv6_error(struct net *net, struct nf_conn *tmpl,
	     struct sk_buff *skb, unsigned int dataoff,
	     enum ip_conntrack_info *ctinfo, u_int8_t pf, unsigned int hooknum)
{
	const struct icmp6hdr *icmp6h;
	struct icmp6hdr _ih;
	int type;

	icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
	if (icmp6h == NULL) {
		if (LOG_INVALID(net, IPPROTO_ICMPV6))
		nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
			      "nf_ct_icmpv6: short packet ");
		return -NF_ACCEPT;
	}

	if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING &&
	    nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
		if (LOG_INVALID(net, IPPROTO_ICMPV6))
			nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
				      "nf_ct_icmpv6: ICMPv6 checksum failed ");
		return -NF_ACCEPT;
	}

	type = icmp6h->icmp6_type - 130;
	if (type >= 0 && type < sizeof(noct_valid_new) &&
	    noct_valid_new[type]) {
		skb->nfct = &nf_ct_untracked_get()->ct_general;
		skb->nfctinfo = IP_CT_NEW;
		nf_conntrack_get(skb->nfct);
		return NF_ACCEPT;
	}

	
	if (icmp6h->icmp6_type >= 128)
		return NF_ACCEPT;

	return icmpv6_error_message(net, tmpl, skb, dataoff, ctinfo, hooknum);
}

Exemplo n.º 4

Arquivo: netsession_proto_icmpv6.c Projeto: millken/zhuxianB30

static s32
icmpv6_error(struct vrf *vrf, struct sk_buff *skb, unsigned int dataoff,
	     enum netsession_info *nsinfo, u_int8_t pf, unsigned int hooknum)
{
	const struct icmp6hdr *icmp6h;
	struct icmp6hdr _ih;
	s32 type;

	icmp6h = skb_header_pointer(skb, dataoff, sizeof(_ih), &_ih);
	if (icmp6h == NULL) {		
		return -NS_ACCEPT;
	}

	if (ns_need_checksum && 
	    ns_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {			
		return -NS_ACCEPT;
	}
	
	if(skb->ns)
		return NS_ACCEPT;

	type = icmp6h->icmp6_type - 130;
	if (type >= 0 && type < sizeof(noct_valid_new) &&
	    noct_valid_new[type]) {
        skb->ns = &ns_untracked_get()->ns_general;		
		ns_get(skb->ns);
        skb->nsinfo = NS_ESTABLISHED;
		return NS_ACCEPT;
	}

	/* is not error message ? */
	if (icmp6h->icmp6_type >= 128)
		return NS_ACCEPT;

	return icmpv6_error_message(vrf, skb, dataoff, nsinfo, hooknum);
}