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| #ifndef NETINET_IP_ICMP_H |
| #define NETINET_IP_ICMP_H |
| |
| #include <sys/cdefs.h> |
| #include <inttypes.h> |
| #include <netinet/ip.h> |
| |
| __BEGIN_DECLS |
| |
| struct icmphdr { |
| uint8_t type; /* message type */ |
| uint8_t code; /* type sub-code */ |
| uint16_t checksum; |
| union { |
| struct { |
| uint16_t id; |
| uint16_t sequence; |
| } echo; /* echo datagram */ |
| uint32_t gateway; /* gateway address */ |
| struct { |
| uint16_t __unused; |
| uint16_t mtu; |
| } frag; /* path mtu discovery */ |
| } un; |
| }; |
| |
| #define ICMP_ECHOREPLY 0 /* Echo Reply */ |
| #define ICMP_DEST_UNREACH 3 /* Destination Unreachable */ |
| #define ICMP_SOURCE_QUENCH 4 /* Source Quench */ |
| #define ICMP_REDIRECT 5 /* Redirect (change route) */ |
| #define ICMP_ECHO 8 /* Echo Request */ |
| #define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */ |
| #define ICMP_PARAMETERPROB 12 /* Parameter Problem */ |
| #define ICMP_TIMESTAMP 13 /* Timestamp Request */ |
| #define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */ |
| #define ICMP_INFO_REQUEST 15 /* Information Request */ |
| #define ICMP_INFO_REPLY 16 /* Information Reply */ |
| #define ICMP_ADDRESS 17 /* Address Mask Request */ |
| #define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */ |
| #define NR_ICMP_TYPES 18 |
| |
| |
| /* Codes for UNREACH. */ |
| #define ICMP_NET_UNREACH 0 /* Network Unreachable */ |
| #define ICMP_HOST_UNREACH 1 /* Host Unreachable */ |
| #define ICMP_PROT_UNREACH 2 /* Protocol Unreachable */ |
| #define ICMP_PORT_UNREACH 3 /* Port Unreachable */ |
| #define ICMP_FRAG_NEEDED 4 /* Fragmentation Needed/DF set */ |
| #define ICMP_SR_FAILED 5 /* Source Route failed */ |
| #define ICMP_NET_UNKNOWN 6 |
| #define ICMP_HOST_UNKNOWN 7 |
| #define ICMP_HOST_ISOLATED 8 |
| #define ICMP_NET_ANO 9 |
| #define ICMP_HOST_ANO 10 |
| #define ICMP_NET_UNR_TOS 11 |
| #define ICMP_HOST_UNR_TOS 12 |
| #define ICMP_PKT_FILTERED 13 /* Packet filtered */ |
| #define ICMP_PREC_VIOLATION 14 /* Precedence violation */ |
| #define ICMP_PREC_CUTOFF 15 /* Precedence cut off */ |
| #define NR_ICMP_UNREACH 15 /* instead of hardcoding immediate value */ |
| |
| /* Codes for REDIRECT. */ |
| #define ICMP_REDIR_NET 0 /* Redirect Net */ |
| #define ICMP_REDIR_HOST 1 /* Redirect Host */ |
| #define ICMP_REDIR_NETTOS 2 /* Redirect Net for TOS */ |
| #define ICMP_REDIR_HOSTTOS 3 /* Redirect Host for TOS */ |
| |
| /* Codes for TIME_EXCEEDED. */ |
| #define ICMP_EXC_TTL 0 /* TTL count exceeded */ |
| #define ICMP_EXC_FRAGTIME 1 /* Fragment Reass time exceeded */ |
| |
| /* |
| * Lower bounds on packet lengths for various types. |
| * For the error advice packets must first insure that the |
| * packet is large enough to contain the returned ip header. |
| * Only then can we do the check to see if 64 bits of packet |
| * data have been returned, since we need to check the returned |
| * ip header length. |
| */ |
| #define ICMP_MINLEN 8 /* abs minimum */ |
| #define ICMP_TSLEN (8 + 3 * sizeof (n_time)) /* timestamp */ |
| #define ICMP_MASKLEN 12 /* address mask */ |
| #define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8) /* min */ |
| #ifndef _IP_VHL |
| #define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8) |
| /* N.B.: must separately check that ip_hl >= 5 */ |
| #else |
| #define ICMP_ADVLEN(p) (8 + (IP_VHL_HL((p)->icmp_ip.ip_vhl) << 2) + 8) |
| /* N.B.: must separately check that header length >= 5 */ |
| #endif |
| |
| /* Definition of type and code fields. */ |
| /* defined above: ICMP_ECHOREPLY, ICMP_REDIRECT, ICMP_ECHO */ |
| #define ICMP_UNREACH 3 /* dest unreachable, codes: */ |
| #define ICMP_SOURCEQUENCH 4 /* packet lost, slow down */ |
| #define ICMP_ROUTERADVERT 9 /* router advertisement */ |
| #define ICMP_ROUTERSOLICIT 10 /* router solicitation */ |
| #define ICMP_TIMXCEED 11 /* time exceeded, code: */ |
| #define ICMP_PARAMPROB 12 /* ip header bad */ |
| #define ICMP_TSTAMP 13 /* timestamp request */ |
| #define ICMP_TSTAMPREPLY 14 /* timestamp reply */ |
| #define ICMP_IREQ 15 /* information request */ |
| #define ICMP_IREQREPLY 16 /* information reply */ |
| #define ICMP_MASKREQ 17 /* address mask request */ |
| #define ICMP_MASKREPLY 18 /* address mask reply */ |
| |
| #define ICMP_MAXTYPE 18 |
| |
| /* UNREACH codes */ |
| #define ICMP_UNREACH_NET 0 /* bad net */ |
| #define ICMP_UNREACH_HOST 1 /* bad host */ |
| #define ICMP_UNREACH_PROTOCOL 2 /* bad protocol */ |
| #define ICMP_UNREACH_PORT 3 /* bad port */ |
| #define ICMP_UNREACH_NEEDFRAG 4 /* IP_DF caused drop */ |
| #define ICMP_UNREACH_SRCFAIL 5 /* src route failed */ |
| #define ICMP_UNREACH_NET_UNKNOWN 6 /* unknown net */ |
| #define ICMP_UNREACH_HOST_UNKNOWN 7 /* unknown host */ |
| #define ICMP_UNREACH_ISOLATED 8 /* src host isolated */ |
| #define ICMP_UNREACH_NET_PROHIB 9 /* net denied */ |
| #define ICMP_UNREACH_HOST_PROHIB 10 /* host denied */ |
| #define ICMP_UNREACH_TOSNET 11 /* bad tos for net */ |
| #define ICMP_UNREACH_TOSHOST 12 /* bad tos for host */ |
| #define ICMP_UNREACH_FILTER_PROHIB 13 /* admin prohib */ |
| #define ICMP_UNREACH_HOST_PRECEDENCE 14 /* host prec vio. */ |
| #define ICMP_UNREACH_PRECEDENCE_CUTOFF 15 /* prec cutoff */ |
| |
| /* REDIRECT codes */ |
| #define ICMP_REDIRECT_NET 0 /* for network */ |
| #define ICMP_REDIRECT_HOST 1 /* for host */ |
| #define ICMP_REDIRECT_TOSNET 2 /* for tos and net */ |
| #define ICMP_REDIRECT_TOSHOST 3 /* for tos and host */ |
| |
| /* TIMEXCEED codes */ |
| #define ICMP_TIMXCEED_INTRANS 0 /* ttl==0 in transit */ |
| #define ICMP_TIMXCEED_REASS 1 /* ttl==0 in reass */ |
| |
| /* PARAMPROB code */ |
| #define ICMP_PARAMPROB_OPTABSENT 1 /* req. opt. absent */ |
| |
| #define ICMP_INFOTYPE(type) \ |
| ((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \ |
| (type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \ |
| (type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \ |
| (type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \ |
| (type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY) |
| |
| __END_DECLS |
| |
| #endif |