195 lines
5.1 KiB
C
195 lines
5.1 KiB
C
#ifndef HV_NETINET_H_
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#define HV_NETINET_H_
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#include "hplatform.h"
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/*
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#ifdef OS_UNIX
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/udp.h>
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#include <netinet/tcp.h>
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#include <netinet/ip_icmp.h>
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typedef struct iphdr iphdr_t;
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typedef struct udphdr udphdr_t;
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typedef struct tcphdr tcphdr_t;
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typedef struct icmphdr icmphdr_t;
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typedef struct icmp icmp_t;
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#else
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*/
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// sizeof(iphdr_t) = 20
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typedef struct iphdr_s {
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#if BYTE_ORDER == LITTLE_ENDIAN
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uint8_t ihl:4; // ip header length
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uint8_t version:4;
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#elif BYTE_ORDER == BIG_ENDIAN
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uint8_t version:4;
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uint8_t ihl:4;
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#else
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#error "BYTE_ORDER undefined!"
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#endif
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uint8_t tos; // type of service
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uint16_t tot_len; // total length
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uint16_t id;
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uint16_t frag_off; // fragment offset
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uint8_t ttl; // Time To Live
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uint8_t protocol;
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uint16_t check; // checksum
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uint32_t saddr; // srcaddr
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uint32_t daddr; // dstaddr
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/*The options start here.*/
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} iphdr_t;
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// sizeof(udphdr_t) = 8
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typedef struct udphdr_s {
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uint16_t source; // source port
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uint16_t dest; // dest port
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uint16_t len; // udp length
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uint16_t check; // checksum
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} udphdr_t;
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// sizeof(tcphdr_t) = 20
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typedef struct tcphdr_s {
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uint16_t source; // source port
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uint16_t dest; // dest port
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uint32_t seq; // sequence
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uint32_t ack_seq;
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#if BYTE_ORDER == LITTLE_ENDIAN
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uint16_t res1:4;
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uint16_t doff:4;
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uint16_t fin:1;
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uint16_t syn:1;
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uint16_t rst:1;
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uint16_t psh:1;
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uint16_t ack:1;
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uint16_t urg:1;
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uint16_t res2:2;
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#elif BYTE_ORDER == BIG_ENDIAN
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uint16_t doff:4;
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uint16_t res1:4;
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uint16_t res2:2;
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uint16_t urg:1;
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uint16_t ack:1;
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uint16_t psh:1;
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uint16_t rst:1;
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uint16_t syn:1;
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uint16_t fin:1;
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#else
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#error "BYTE_ORDER undefined!"
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#endif
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uint16_t window;
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uint16_t check; // checksum
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uint16_t urg_ptr; // urgent pointer
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} tcphdr_t;
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//----------------------icmp----------------------------------
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#define ICMP_ECHOREPLY 0 /* Echo Reply */
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#define ICMP_DEST_UNREACH 3 /* Destination Unreachable */
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#define ICMP_SOURCE_QUENCH 4 /* Source Quench */
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#define ICMP_REDIRECT 5 /* Redirect (change route) */
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#define ICMP_ECHO 8 /* Echo Request */
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#define ICMP_TIME_EXCEEDED 11 /* Time Exceeded */
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#define ICMP_PARAMETERPROB 12 /* Parameter Problem */
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#define ICMP_TIMESTAMP 13 /* Timestamp Request */
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#define ICMP_TIMESTAMPREPLY 14 /* Timestamp Reply */
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#define ICMP_INFO_REQUEST 15 /* Information Request */
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#define ICMP_INFO_REPLY 16 /* Information Reply */
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#define ICMP_ADDRESS 17 /* Address Mask Request */
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#define ICMP_ADDRESSREPLY 18 /* Address Mask Reply */
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// sizeof(icmphdr_t) = 8
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typedef struct icmphdr_s {
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uint8_t type; // message type
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uint8_t code; // type sub-code
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uint16_t checksum;
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union {
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struct {
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uint16_t id;
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uint16_t sequence;
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} echo;
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uint32_t gateway;
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struct {
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uint16_t reserved;
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uint16_t mtu;
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} frag;
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} un;
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} icmphdr_t;
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typedef struct icmp_s {
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uint8_t icmp_type;
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uint8_t icmp_code;
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uint16_t icmp_cksum;
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union {
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uint8_t ih_pptr;
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struct in_addr ih_gwaddr;
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struct ih_idseq {
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uint16_t icd_id;
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uint16_t icd_seq;
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} ih_idseq;
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uint32_t ih_void;
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struct ih_pmtu {
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uint16_t ipm_void;
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uint16_t ipm_nextmtu;
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} ih_pmtu;
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struct ih_rtradv {
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uint8_t irt_num_addrs;
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uint8_t 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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#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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union {
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struct {
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uint32_t its_otime;
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uint32_t its_rtime;
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uint32_t its_ttime;
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} id_ts;
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/*
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struct {
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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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*/
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uint32_t id_mask;
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uint8_t id_data[1];
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} icmp_dun;
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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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} icmp_t;
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//#endif
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static inline uint16_t checksum(uint8_t* buf, int len) {
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unsigned int sum = 0;
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uint16_t* ptr = (uint16_t*)buf;
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while(len > 1) {
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sum += *ptr++;
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len -= 2;
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}
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if(len) {
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sum += *(uint8_t*)ptr;
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}
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sum = (sum >> 16) + (sum & 0xffff);
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sum += (sum >> 16);
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return (uint16_t)(~sum);
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};
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#endif // HV_NETINET_H_
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