Question #216331 on rohc changed:
https://answers.launchpad.net/rohc/+question/216331
Status: Needs information => Open
Raman Gupta gave more information on the question:
Here are the content of the src/common/protocols/ipv6.h file
/**
* @file ipv6.h
* @brief Defines the IPv6 header
* @author Free Software Foundation, Inc
*
* This file contains a part of netinet/ip6.h from the GNU C library. It is
* copied here to be portable on all platforms, even the platforms that miss
* the declarations or got different declarations, such as Microsoft Windows
* or FreeBSD.
*/
#ifndef ROHC_PROTOCOLS_IPV6_H
#define ROHC_PROTOCOLS_IPV6_H
#include <stdint.h>
/**
* @brief The IPv6 address
*/
struct ipv6_addr
{
union
{
uint8_t __u6_addr8[16];
uint16_t __u6_addr16[8];
uint32_t __u6_addr32[4];
} __in6_u;
#define s6_addr __in6_u.__u6_addr8
#define s6_addr16 __in6_u.__u6_addr16
#define s6_addr32 __in6_u.__u6_addr32
};
/**
* @brief The IPv6 header
*/
struct ipv6_hdr
{
union
{
struct ip6_hdrctl
{
uint32_t ip6_un1_flow; /* 4 bits version, 8 bits TC,
20 bits flow-ID */
uint16_t ip6_un1_plen; /* payload length */
uint8_t ip6_un1_nxt; /* next header */
uint8_t ip6_un1_hlim; /* hop limit */
} ip6_un1;
uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits tclass
*/
} ip6_ctlun;
struct ipv6_addr ip6_src; /* source address */
struct ipv6_addr ip6_dst; /* destination address */
};
#define ip6_vfc ip6_ctlun.ip6_un2_vfc
#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow
#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen
#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt
#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim
#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim
#endif
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