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netfilter: ip6t_REJECT: added missing icmpv6 codes

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RFC 4443 added two new codes values for ICMPv6 type 1:

 5 - Source address failed ingress/egress policy
 6 - Reject route to destination

And RFC 7084 states in L-14 that IPv6 Router MUST send ICMPv6 Destination
Unreachable with code 5 for packets forwarded to it that use an address
from a prefix that has been invalidated.

Codes 5 and 6 are more informative subsets of code 1.

Signed-off-by: Andreas Herz <andi@geekosphere.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Andreas Herz 2015-08-21 11:31:32 +02:00 committed by Pablo Neira Ayuso
parent 116984a316
commit 1afe839e6b
2 changed files with 9 additions and 1 deletions
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4
include/uapi/linux/netfilter_ipv6/ip6t_REJECT.h
View File

@ -10,7 +10,9 @@ enum ip6t_reject_with {
IP6T_ICMP6_ADDR_UNREACH,
IP6T_ICMP6_PORT_UNREACH,
IP6T_ICMP6_ECHOREPLY,
IP6T_TCP_RESET
IP6T_TCP_RESET,
IP6T_ICMP6_POLICY_FAIL,
IP6T_ICMP6_REJECT_ROUTE
};
struct ip6t_reject_info {

6
net/ipv6/netfilter/ip6t_REJECT.c
View File

@ -63,6 +63,12 @@ reject_tg6(struct sk_buff *skb, const struct xt_action_param *par)
case IP6T_TCP_RESET:
nf_send_reset6(net, skb, par->hooknum);
break;
case IP6T_ICMP6_POLICY_FAIL:
nf_send_unreach6(net, skb, ICMPV6_POLICY_FAIL, par->hooknum);
break;
case IP6T_ICMP6_REJECT_ROUTE:
nf_send_unreach6(net, skb, ICMPV6_REJECT_ROUTE, par->hooknum);
break;
}
return NF_DROP;