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m241Neelima/components/ip_net2-6.9/ipcom/include/ipcom_inet.h
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neelimap afc7070c1f original files of m241
2026-07-30 11:19:44 +05:30

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/*
******************************************************************************
* HEADER FILE
*
* Document no: @(#) $Name: VXWORKS_ITER40_2019102207 $ $RCSfile: ipcom_inet.h,v $ $Revision: 1.42.14.2 $
* $Source: /home/interpeak/CVSRoot/ipcom/include/ipcom_inet.h,v $
* $Author: kenneth $ $Date: 2012-03-07 10:19:32 $
* $State: Exp $ $Locker: $
*
* INTERPEAK_COPYRIGHT_STRING
* Design and implementation by Lennart Bang <lob@interpeak.se>
******************************************************************************
*/
#ifndef IPCOM_INET_H
#define IPCOM_INET_H
/*
****************************************************************************
* 1 DESCRIPTION
****************************************************************************
*/
/*
****************************************************************************
* 2 CONFIGURATION
****************************************************************************
*/
#include "ipcom_config.h"
/*
****************************************************************************
* 3 INCLUDE FILES
****************************************************************************
*/
#include "ipcom_type.h"
#include "ipcom_cstyle.h"
#include "ipcom_sock.h"
#ifdef __cplusplus
extern "C" {
#endif
/*
****************************************************************************
* 4 DEFINES
****************************************************************************
*/
#define IPCOM_IS_GT(s1, s2) ((Ip_s32) ((s1) - (s2)) > 0)
#define IPCOM_IS_GEQ(s1, s2) ((Ip_s32) ((s1) - (s2)) >= 0)
#define IPCOM_IS_LT(s1, s2) ((Ip_s32) ((s1) - (s2)) < 0)
#define IPCOM_IS_LEQ(s1, s2) ((Ip_s32) ((s1) - (s2)) <= 0)
#define IPCOM_IS_GT64(s1, s2) ((Ip_s64) ((s1) - (s2)) > 0)
#define IPCOM_IS_GEQ64(s1, s2) ((Ip_s64) ((s1) - (s2)) >= 0)
#define IPCOM_IS_LT64(s1, s2) ((Ip_s64) ((s1) - (s2)) < 0)
#define IPCOM_IS_LEQ64(s1, s2) ((Ip_s64) ((s1) - (s2)) <= 0)
/*
****************************************************************************
* 5 TYPES
****************************************************************************
*/
/*
*===========================================================================
* Ip_addr4
*===========================================================================
*/
#ifndef _IPCOM_IPA_TYPE_
#define _IPCOM_IPA_TYPE_
typedef Ip_u32 Ip_addr4; /* 32 bit IPv4 address in network byte order. */
#endif
typedef union Ipa_union_union
{
Ip_addr4 addr32;
Ip_u16 addr16[2];
Ip_u8 addr8[4];
}
Ipa_union;
/*
*===========================================================================
* Ipcom_sock_addr
*===========================================================================
* Ipcom_sock_addr is used to store an IPv4 address, a port number and optionally
* the interface index of an address. Set 'ifindex' to IP_INVAL_IFINDEX if
* unknown.
*/
typedef struct Ipcom_sock_addr_struct
{
Ip_addr4 ipaddr_n;
Ip_u32 ifindex; /* where applicable. */
Ip_u16 port_n;
}
Ipcom_sock_addr;
/* Use the below macro if 'ifindex' is unknown. */
#define IP_INVAL_IFINDEX 0xffffffff
/*
*===========================================================================
* Ipcom_sock_packet
*===========================================================================
* Interpeak packet structure including the buffer as well as the source and
* destination address.
*/
typedef struct Ipcom_sock_packet_struct
{
/* next pointer for packet linking. */
struct Ipcom_sock_packet_struct *next;
/* Source address (from) and destination address (to). */
Ipcom_sock_addr from;
Ipcom_sock_addr to;
/* 'packet' buffer. */
void *buf;
Ip_size_t maxlen;
Ip_size_t len;
}
Ipcom_sock_packet;
/*
*===========================================================================
* Ipcom_ip_header
*===========================================================================
* IPv4 header.
*/
#define IPCOM_IP_HEADER_LENGTH 20
#include "ipcom_align16.h"
typedef IP_PACKED1 struct Ipcom_ip_header_struct
{
Ip_u8 vers_len; /* 4-bit version and 4-bit header length. */
Ip_u8 tos; /* Type Of Service. */
Ip_u16 length; /* total length of IP datagram in bytes. */
Ip_u16 id; /* Identification field. */
Ip_u16 frag; /* 3-bit flags and 13-bit fragment offset. */
Ip_u8 ttl; /* Time To Live - number of routing hops. */
Ip_u8 protocol; /* IP Protocol number. */
Ip_u16 checksum; /* IP header checksum, 16-bit one's complement sum. */
Ipa_union src; /* Source IP address. */
Ipa_union dst; /* Destination IP address. */
}
IP_PACKED2 Ipcom_ip_header;
/* frag field. */
#define IPCOM_ISFRAG(frag) ((frag) & (IPCOM_IPFRAG_MF | IPCOM_IPFRAG_OFFMASK))
#ifdef IP_LITTLE_ENDIAN
#define IPCOM_IPFRAG_RF 0x0080 /* Reserved fragment flag. */
#define IPCOM_IPFRAG_DF 0x0040 /* Dont fragment flag. */
#define IPCOM_IPFRAG_MF 0x0020 /* More fragments flag. */
#define IPCOM_IPFRAG_OFFMASK 0xff1f /* Mask for fragmenting bits. */
#else
#define IPCOM_IPFRAG_RF 0x8000 /* Reserved fragment flag. */
#define IPCOM_IPFRAG_DF 0x4000 /* Dont fragment flag. */
#define IPCOM_IPFRAG_MF 0x2000 /* More fragments flag. */
#define IPCOM_IPFRAG_OFFMASK 0x1fff /* Mask for fragmenting bits. */
#endif
/*
*===========================================================================
* Ipcom_ip6_header
*===========================================================================
* IPv6 header.
*/
#define IPCOM_IP6_HEADER_LENGTH 40
typedef IP_PACKED1 struct Ipcom_ip6_header_struct
{
Ip_u32 ver_class_flow; /* 4 bit version, 8 bit class, 20 bit flow. */
Ip_u16 plen; /* Payload length. */
Ip_u8 nxt; /* Next Header. */
Ip_u8 hlim; /* Hop limit. */
#ifdef IPCOM_USE_INET6
struct Ip_in6_addr src; /* IPv6 source address. */
struct Ip_in6_addr dst; /* IPv6 destination address. */
#else
Ip_u8 xsrc[16];
Ip_u8 xdst[16];
#endif
}
IP_PACKED2 Ipcom_ip6_header;
#define IP_IP6_GET_VER(ip6) (IP_GET_NTOHL(&(ip6)->ver_class_flow) >> 28)
/*
*===========================================================================
* Ipcom_udp_header
*===========================================================================
* UDP header.
*/
#define IPCOM_UDP_HEADER_LENGTH 8
typedef IP_PACKED1 struct Ipcom_udp_header_struct
{
Ip_u16 src_port; /* Source UDP Port */
Ip_u16 dst_port; /* Destination UDP Port */
Ip_u16 length; /* Length of UDP header + data = 8+X */
Ip_u16 checksum; /* UDP Checksum (0 = No checksum) */
}
IP_PACKED2 Ipcom_udp_header;
/*
*===========================================================================
* Ipcom_sctp_header
*===========================================================================
* SCTP header.
*/
#define IPCOM_SCTP_HEADER_LENGTH 12
typedef IP_PACKED1 struct Ipcom_sctp_header_struct
{
Ip_u16 sport; /* source port */
Ip_u16 dport; /* destination port */
Ip_u32 vtag; /* packet verification tag */
Ip_u32 crc; /* CRC-32c Checksum */
}
IP_PACKED2 Ipcom_sctp_header;
/*
*===========================================================================
* Ipcom_tcp_header
*===========================================================================
* TCP header.
* NOTE: fixed standard/minimum size, can acctually vary in size!
*/
/* Size of a TCP header without options. */
#define IPCOM_TCP_HEADER_LENGTH 20
typedef IP_PACKED1 struct Ipcom_tcp_header_struct
{
Ip_u16 src_port; /* Source TCP Port */
Ip_u16 dst_port; /* Destination TCP Port */
Ip_u32 seq_num;
Ip_u32 ack_num;
Ip_u16 offset_flags;
Ip_u16 window;
Ip_u16 checksum;
Ip_u16 urgent_pointer;
}
IP_PACKED2 Ipcom_tcp_header;
/*
*===========================================================================
* Ipcom_icmp_header
*===========================================================================
* ICMP header.
*/
/* Size of common fields in an ICMP header */
#define IPCOM_ICMP_HEADER_LENGTH 4
typedef IP_PACKED1 struct Ipcom_icmp_header_struct
{
Ip_u8 type; /* Type field */
Ip_u8 code; /* Code field */
Ip_u16 checksum; /* Checksum field */
union Ipcom_icmp_data_union
{
struct Ipcom_icmp_data_echo_struct
{
Ip_u16 id;
Ip_u16 seq;
Ip_u16 data[2];
} echo;
struct Ipcom_icmp_data_unreach_struct
{
Ip_u16 unused[2];
Ip_u16 iph[10];
Ip_u16 data[4];
} unreach;
struct Ipcom_icmp_data_redirect_struct
{
Ip_u32 gateway_addr;
Ip_u16 ip[10];
Ip_u16 transport_hdr[4];
} redirect;
struct Ipcom_icmp_data_failing_pkt_struct
{
Ip_u16 unused[2];
Ip_u16 ip[10];
Ip_u16 transport_hdr[4];
} failing_pkt;
}
data;
}
IP_PACKED2 Ipcom_icmp_header;
#include "ipcom_align16.h"
/* ICMP v4 'type': */
#define IPCOM_ICMP_ECHO_REPLY 0
#define IPCOM_ICMP_UNREACH 3
#define IPCOM_ICMP_SOURCEQUENCH 4
#define IPCOM_ICMP_REDIRECT 5
#define IPCOM_ICMP_ECHO_REQUEST 8
#define IPCOM_ICMP_TIMEXCEED 11
#define IPCOM_ICMP_PARAMPROB 12
#define IPCOM_ICMP_TSTAMP_REQUEST 13
#define IPCOM_ICMP_TSTAMP_REPLY 14
#define IPCOM_ICMP_INFO_REQUEST 15
#define IPCOM_ICMP_INFO_REPLY 16
#define IPCOM_ICMP_MASK_REQUEST 17
#define IPCOM_ICMP_MASK_REPLY 18
/* ICMP v6 'type': */
#define IPCOM_ICMP6_ECHO_REQUEST 128
#define IPCOM_ICMP6_ECHO_REPLY 129
/*
****************************************************************************
* 6 FUNCTIONS
****************************************************************************
*/
/*
*===========================================================================
* ipcom_ipproto_name
*===========================================================================
* Description:
* Parameters:
* Returns:
*
*/
IP_PUBLIC char *
ipcom_ipproto_name(Ip_u8 protocol);
/*
*===========================================================================
* ipcom_getsockaddrbyaddr
*===========================================================================
* Description: Convert the presentation form of a address to a socket address.
* Parameters: domain - Address domain (IP_AF_LINK, IP_AF_INET or IP_AF_INET6).
* straddr - The presentation form of the address.
* sa - Will hold the socket address.
* Returns: 0 for success else negative errno code (ipcom_perrno.h).
*
*/
IP_PUBLIC int
ipcom_getsockaddrbyaddr(int domain, IP_CONST char *straddr, struct Ip_sockaddr *sa);
/*
*===========================================================================
* ipcom_getsockaddrbyaddrname
*===========================================================================
* Description: Resolves the 'addr_or_name' to IP address stored in socket
* address.
* Parameters: domain - IP_AF_INET or IP_AF_INET6.
* no_dns - IP_TRUE if address should be resolved using DNS.
* addr_or_name - Must be a IP address or a DNS name.
* sa - Socket address structure to hold the IP address.
* Returns: 0 for success else negative errno code (ipcom_perrno.h).
*
*/
IP_PUBLIC int
ipcom_getsockaddrbyaddrname(int domain, Ip_bool no_dns, IP_CONST char *addr_or_name,
struct Ip_sockaddr *sa);
/*
*===========================================================================
* ipcom_getinaddrprefixbyaddr
*===========================================================================
* Description: Converts a prefix in the form addr/len to a numerical form.
* Len does not include host specific length, i.e. 32 or 128.
* Parameters: domain - Address domain (IP_AF_LINK, IP_AF_INET or IP_AF_INET6).
* straddr - The presentation form of the prefix.
* inprefix - Points to a buffer that can hold the domain address.
* prefixlen - The length of the prefix.
* Returns: 0 for success else negative errno code (ipcom_perrno.h).
*
*/
IP_PUBLIC int
ipcom_getinaddrprefixbyaddr(int domain, IP_CONST char *straddr, void *inprefix, int *prefixlen);
/*
*===========================================================================
* ipcom_getinaddrprefixbyaddr2
*===========================================================================
* Description: Converts a prefix in the form addr/len to a numerical form.
* Len includes host specific length, i.e. 32 and 128.
* Parameters: domain - Address domain (IP_AF_LINK, IP_AF_INET or IP_AF_INET6).
* straddr - The presentation form of the prefix.
* inprefix - Points to a buffer that can hold the domain address.
* prefixlen - The length of the prefix.
* Returns: 0 for success else negative errno code (ipcom_perrno.h).
*
*/
IP_PUBLIC int
ipcom_getinaddrprefixbyaddr2(int domain, IP_CONST char *straddr, void *inprefix, int *prefixlen);
/*
*===========================================================================
* ipcom_mask_to_prefixlen
*===========================================================================
* Description: Converts binary representation of a mask to the corresponding
* prefix len value (i.e. 255.255.0.0 -> 16).
* Parameters: mask - The mask in binary form
* mask_bit_len - The size of the mask in bits
* Returns: The prefix length value for the specified mask.
*
*/
IP_PUBLIC int
ipcom_mask_to_prefixlen(IP_CONST void *mask, int mask_bit_len);
/*
*===========================================================================
* ipcom_sockaddr_to_prefixlen
*===========================================================================
* Description: Returns the number of leading '1' in the mask.
* Parameters: sa - Socket address structure containing the mask.
* Returns: The prefix length value for the address in sockaddr 'sa'.
*
*/
IP_PUBLIC int
ipcom_sockaddr_to_prefixlen(struct Ip_sockaddr *sa);
/*
*===========================================================================
* ipcom_in_checksum
*===========================================================================
* Description: Calculate a one complement checksum.
* Parameters: buf and bytes.
* Returns: A one complement standard internet checksum.
*
*/
IP_PUBLIC Ip_u16
ipcom_in_checksum(void *buf, Ip_size_t bytes);
/*
*===========================================================================
* ipcom_in_checksum_update_pkt
*===========================================================================
* Description: Computes the internet checksum (RFC 1071). NOTE
* it does not compute the 1 complement checksum.
* Parameters: buf and bytes.
* Returns: A standard internet checksum..
*
*/
IP_PUBLIC Ip_u32
ipcom_in_checksum_update_pkt(Ipcom_pkt *pkt, Ip_u32 chksum);
/*
*===========================================================================
* ipcom_in_checksum_pkt
*===========================================================================
* Description: Calculate a one complement checksum.
* Parameters: buf and bytes.
* Returns: A one complement standard internet checksum.
*
*/
IP_PUBLIC Ip_u16
ipcom_in_checksum_pkt(Ipcom_pkt *pkt, Ip_u32 chksum);
/*
*===========================================================================
* ipcom_in_checksum_update
*===========================================================================
* Description: Computes the internet checksum (RFC 1071). NOTE
* it does not compute the 1 complement checksum.
* Parameters: buf and bytes.
* Returns: A standard internet checksum..
*
*/
IP_PUBLIC Ip_u32
ipcom_in_checksum_update(void *buf, Ip_size_t bytes);
/*
*===========================================================================
* ipcom_in_checksum_finish
*===========================================================================
* Description: Computes the one complement internet checksum (RFC 1071).
* Parameters: sum - The accumulated 32 bit internet sum.
* Returns: A one complement standard internet checksum.
*
*/
IP_PUBLIC Ip_u16
ipcom_in_checksum_finish(Ip_u32 sum);
/*
*===========================================================================
* ipcom_in_checksum_memcpy
*===========================================================================
* Description: Copies data and calculate the internet checksum at the same
* time.
* Parameters: dst - Destination buffer.
* src - Source buffer.
* len - Number of octets to copy.
* Returns: The intermediate internet checksum, use
* ipcom_in_checksum_finish() to get the actual checksum.
*
*/
IP_PUBLIC Ip_u32
ipcom_in_checksum_memcpy(void *dst, void *src, Ip_size_t len);
/*
*===========================================================================
* ipcom_stackd
*===========================================================================
* Description: Prototypes for external stack daemon.
* Parameters:
* Returns: No of milliseconds to next stack timeout.
*
*/
IP_PUBLIC Ip_s32 ipcom_stackd_init(void);
IP_PUBLIC Ip_s32 ipcom_stackd_event(Ip_bool is_timeout);
#ifdef __cplusplus
}
#endif
#endif
/*
****************************************************************************
* END OF FILE
****************************************************************************
*/
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