libnetfilter_conntrack 1.0.9
proto.c
1#include <internal/proto.h>
2#include <internal/internal.h>
3
4static const uint8_t invmap_icmp[] = {
5 [ICMP_ECHO] = ICMP_ECHOREPLY + 1,
6 [ICMP_ECHOREPLY] = ICMP_ECHO + 1,
7 [ICMP_TIMESTAMP] = ICMP_TIMESTAMPREPLY + 1,
8 [ICMP_TIMESTAMPREPLY] = ICMP_TIMESTAMP + 1,
9 [ICMP_INFO_REQUEST] = ICMP_INFO_REPLY + 1,
10 [ICMP_INFO_REPLY] = ICMP_INFO_REQUEST + 1,
11 [ICMP_ADDRESS] = ICMP_ADDRESSREPLY + 1,
12 [ICMP_ADDRESSREPLY] = ICMP_ADDRESS + 1
13};
14
15static const uint8_t invmap_icmpv6[] = {
16 [ICMPV6_ECHO_REQUEST - 128] = ICMPV6_ECHO_REPLY + 1,
17 [ICMPV6_ECHO_REPLY - 128] = ICMPV6_ECHO_REQUEST + 1,
18 [ICMPV6_NI_QUERY - 128] = ICMPV6_NI_REPLY + 1,
19 [ICMPV6_NI_REPLY - 128] = ICMPV6_NI_QUERY + 1
20};
21
22uint8_t __icmp_reply_type(uint8_t type)
23{
24 if (type < ARRAY_SIZE(invmap_icmp))
25 return invmap_icmp[type];
26
27 return 0;
28}
29
30uint8_t __icmpv6_reply_type(uint8_t type)
31{
32 if (type - 128 < ARRAY_SIZE(invmap_icmpv6))
33 return invmap_icmpv6[type - 128];
34
35 return 0;
36}