144 lines
3.3 KiB
C
144 lines
3.3 KiB
C
// ip_icmp.h
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// Copyright 2016 Robin.Rowe@CinePaint.org
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// License open source MIT
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#ifndef ip_icmp_h
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#define ip_icmp_h
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#include <stdint.h>
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#include "ip.h"
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#ifdef __cplusplus
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extern "C" {
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#else
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#define inline __inline
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#endif
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struct icmp_ra_addr
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{ uint32_t ira_addr;
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uint32_t ira_preference;
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};
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#define icmp_pptr icmp_hun.ih_pptr
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#define icmp_gwaddr icmp_hun.ih_gwaddr
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#define icmp_id icmp_hun.ih_idseq.icd_id
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#define icmp_seq icmp_hun.ih_idseq.icd_seq
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#define icmp_void icmp_hun.ih_void
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#define icmp_pmvoid icmp_hun.ih_pmtu.ipm_void
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#define icmp_nextmtu icmp_hun.ih_pmtu.ipm_nextmtu
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#define icmp_num_addrs icmp_hun.ih_rtradv.irt_num_addrs
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#define icmp_wpa icmp_hun.ih_rtradv.irt_wpa
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#define icmp_lifetime icmp_hun.ih_rtradv.irt_lifetime
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#define icmp_otime icmp_dun.id_ts.its_otime
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#define icmp_rtime icmp_dun.id_ts.its_rtime
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#define icmp_ttime icmp_dun.id_ts.its_ttime
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#define icmp_ip icmp_dun.id_ip.idi_ip
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#define icmp_radv icmp_dun.id_radv
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#define icmp_mask icmp_dun.id_mask
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#define icmp_data icmp_dun.id_data
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struct icmp
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{ u_char icmp_type;
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u_char icmp_code;
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u_short icmp_cksum;
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union
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{ u_char ih_pptr;
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struct in_addr ih_gwaddr;
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struct ih_idseq
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{ short icd_id;
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short icd_seq;
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} ih_idseq;
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int ih_void;
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struct ih_pmtu
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{ short ipm_void;
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short ipm_nextmtu;
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} ih_pmtu;
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struct ih_rtradv
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{ u_char irt_num_addrs;
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u_char irt_wpa;
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uint16_t irt_lifetime;
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} ih_rtradv;
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} icmp_hun;
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union
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{ struct id_ts
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{ time_t its_otime;
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time_t its_rtime;
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time_t its_ttime;
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} id_ts;
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struct id_ip
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{ struct ip idi_ip;
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} id_ip;
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struct icmp_ra_addr id_radv;
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uint32_t id_mask;
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char id_data[1];
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} icmp_dun;
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};
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#define ICMP_MINLEN 8
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#define ICMP_TSLEN (8 + 3 * sizeof (time_t))
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#define ICMP_MASKLEN 12
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#define ICMP_ADVLENMIN (8 + sizeof (struct ip) + 8)
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#define ICMP_ADVLEN(p) (8 + ((p)->icmp_ip.ip_hl << 2) + 8)
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enum
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{ ICMP_UNREACH_NET,
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ICMP_UNREACH_HOST,
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ICMP_UNREACH_PROTOCOL,
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ICMP_UNREACH_PORT,
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ICMP_UNREACH_NEEDFRAG,
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ICMP_UNREACH_SRCFAIL,
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ICMP_UNREACH_NET_UNKNOWN,
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ICMP_UNREACH_HOST_UNKNOWN,
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ICMP_UNREACH_ISOLATED,
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ICMP_UNREACH_NET_PROHIB,
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ICMP_UNREACH_HOST_PROHIB,
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ICMP_UNREACH_TOSNET,
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ICMP_UNREACH_TOSHOST,
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ICMP_UNREACH_FILTER_PROHIB,
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ICMP_UNREACH_HOST_PRECEDENCE,
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ICMP_UNREACH_PRECEDENCE_CUTOFF
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};
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enum
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{ ICMP_REDIRECT_NET,
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ICMP_REDIRECT_HOST,
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ICMP_REDIRECT_TOSNET,
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ICMP_REDIRECT_TOSHOST
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};
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#define ICMP_ECHOREPLY 0
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#define ICMP_UNREACH 3
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#define ICMP_SOURCEQUENCH 4
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#define ICMP_REDIRECT 5
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#define ICMP_ECHO 8
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#define ICMP_ROUTERADVERT 9
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#define ICMP_ROUTERSOLICIT 10
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#define ICMP_TIMXCEED 11
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#define ICMP_TIMXCEED_INTRANS 0
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#define ICMP_TIMXCEED_REASS 1
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#define ICMP_PARAMPROB 12
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#define ICMP_PARAMPROB_ERRATPTR 0
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#define ICMP_PARAMPROB_OPTABSENT 1
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#define ICMP_PARAMPROB_LENGTH 2
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#define ICMP_TSTAMP 13
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#define ICMP_TSTAMPREPLY 14
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#define ICMP_IREQ 15
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#define ICMP_IREQREPLY 16
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#define ICMP_MASKREQ 17
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#define ICMP_MASKREPLY 18
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#define ICMP_MAXTYPE 18
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#define ICMP_INFOTYPE(type) \
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((type) == ICMP_ECHOREPLY || (type) == ICMP_ECHO || \
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(type) == ICMP_ROUTERADVERT || (type) == ICMP_ROUTERSOLICIT || \
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(type) == ICMP_TSTAMP || (type) == ICMP_TSTAMPREPLY || \
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(type) == ICMP_IREQ || (type) == ICMP_IREQREPLY || \
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(type) == ICMP_MASKREQ || (type) == ICMP_MASKREPLY)
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#ifdef __cplusplus
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}
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#endif
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#endif
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