69 lines
1.8 KiB
C
69 lines
1.8 KiB
C
#ifndef _ICMP_H_
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#define _ICMP_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <aos/aos.h>
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#include <netutil/types.h>
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//#define ICMP_DEBUG_OPTION 1
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#if defined(ICMP_DEBUG_OPTION)
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#define ICMP_DEBUG(x...) debug_printf("[ip] " x);
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#else
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#define ICMP_DEBUG(fmt, ...) ((void)0)
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#endif
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#define ICMP_ER 0 /* echo reply */
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#define ICMP_DUR 3 /* destination unreachable */
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#define ICMP_SQ 4 /* source quench */
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#define ICMP_RD 5 /* redirect */
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#define ICMP_ECHO 8 /* echo */
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#define ICMP_TE 11 /* time exceeded */
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#define ICMP_PP 12 /* parameter problem */
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#define ICMP_TS 13 /* timestamp */
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#define ICMP_TSR 14 /* timestamp reply */
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#define ICMP_IRQ 15 /* information request */
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#define ICMP_IR 16 /* information reply */
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enum icmp_dur_type {
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ICMP_DUR_NET = 0, /* net unreachable */
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ICMP_DUR_HOST = 1, /* host unreachable */
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ICMP_DUR_PROTO = 2, /* protocol unreachable */
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ICMP_DUR_PORT = 3, /* port unreachable */
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ICMP_DUR_FRAG = 4, /* fragmentation needed and DF set */
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ICMP_DUR_SR = 5 /* source route failed */
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};
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enum icmp_te_type {
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ICMP_TE_TTL = 0, /* time to live exceeded in transit */
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ICMP_TE_FRAG = 1 /* fragment reassembly time exceeded */
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};
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/** This is the standard ICMP header only that the u32_t data
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* is splitted to two u16_t like ICMP echo needs it.
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* This header is also used for other ICMP types that do not
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* use the data part.
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*/
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#define ICMP_HLEN 8
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struct icmp_echo_hdr {
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uint8_t type;
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uint8_t code;
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struct uint16_net chksum;
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struct uint16_net id;
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struct uint16_net seqno;
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} __attribute__((__packed__)) ;
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#define ICMPH_TYPE(hdr) ((hdr)->type)
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#define ICMPH_CODE(hdr) ((hdr)->code)
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/** Combines type and code to an u16_t */
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#define ICMPH_TYPE_SET(hdr, t) ((hdr)->type = (t))
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#define ICMPH_CODE_SET(hdr, c) ((hdr)->code = (c))
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#endif
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