include/netinet/in.h

#ifndef	_NETINET_IN_H
#define	_NETINET_IN_H

#ifdef __cplusplus
extern "C" {
#endif

#include <features.h>
#include <inttypes.h>
#include <sys/socket.h>

typedef uint16_t in_port_t;
typedef uint32_t in_addr_t;
struct in_addr { in_addr_t s_addr; };

struct sockaddr_in
{
	sa_family_t sin_family;
	in_port_t sin_port;
	struct in_addr sin_addr;
	uint8_t sin_zero[8];
};

struct in6_addr
{
	union {
		uint8_t __s6_addr[16];
		uint16_t __s6_addr16[8];
		uint32_t __s6_addr32[4];
	} __in6_union;
};
#define s6_addr __in6_union.__s6_addr
#define s6_addr16 __in6_union.__s6_addr16
#define s6_addr32 __in6_union.__s6_addr32

struct sockaddr_in6
{
	sa_family_t     sin6_family;
	in_port_t       sin6_port;
	uint32_t        sin6_flowinfo;
	struct in6_addr sin6_addr;
	uint32_t        sin6_scope_id;
};

struct ipv6_mreq
{
	struct in6_addr ipv6mr_multiaddr;
	unsigned        ipv6mr_interface;
};

#define INADDR_ANY        ((in_addr_t) 0x00000000)
#define INADDR_BROADCAST  ((in_addr_t) 0xffffffff)
#define INADDR_NONE       ((in_addr_t) 0xffffffff)
#define INADDR_LOOPBACK   ((in_addr_t) 0x7f000001)

#define INADDR_UNSPEC_GROUP     ((in_addr_t) 0xe0000000)
#define INADDR_ALLHOSTS_GROUP   ((in_addr_t) 0xe0000001)
#define INADDR_ALLRTRS_GROUP    ((in_addr_t) 0xe0000002)
#define INADDR_MAX_LOCAL_GROUP  ((in_addr_t) 0xe00000ff)

#define IN6ADDR_ANY_INIT      { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }
#define IN6ADDR_LOOPBACK_INIT { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } }

extern const struct in6_addr in6addr_any, in6addr_loopback;

#undef INET_ADDRSTRLEN
#undef INET6_ADDRSTRLEN
#define INET_ADDRSTRLEN  16
#define INET6_ADDRSTRLEN 46

uint32_t htonl(uint32_t);
uint16_t htons(uint16_t);
uint32_t ntohl(uint32_t);
uint16_t ntohs(uint16_t);

#define IPPROTO_IP       0
#define IPPROTO_HOPOPTS  0
#define IPPROTO_ICMP     1
#define IPPROTO_IGMP     2
#define IPPROTO_IPIP     4
#define IPPROTO_TCP      6
#define IPPROTO_EGP      8
#define IPPROTO_PUP      12
#define IPPROTO_UDP      17
#define IPPROTO_IDP      22
#define IPPROTO_TP       29
#define IPPROTO_DCCP     33
#define IPPROTO_IPV6     41
#define IPPROTO_ROUTING  43
#define IPPROTO_FRAGMENT 44
#define IPPROTO_RSVP     46
#define IPPROTO_GRE      47
#define IPPROTO_ESP      50
#define IPPROTO_AH       51
#define IPPROTO_ICMPV6   58
#define IPPROTO_NONE     59
#define IPPROTO_DSTOPTS  60
#define IPPROTO_MTP      92
#define IPPROTO_BEETPH   94
#define IPPROTO_ENCAP    98
#define IPPROTO_PIM      103
#define IPPROTO_COMP     108
#define IPPROTO_SCTP     132
#define IPPROTO_MH       135
#define IPPROTO_UDPLITE  136
#define IPPROTO_RAW      255
#define IPPROTO_MAX      256

#define IN6_IS_ADDR_UNSPECIFIED(a) \
        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
         ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)

#define IN6_IS_ADDR_LOOPBACK(a) \
        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
         ((uint32_t *) (a))[2] == 0 && \
         ((uint8_t *) (a))[12] == 0 && ((uint8_t *) (a))[13] == 0 && \
         ((uint8_t *) (a))[14] == 0 && ((uint8_t *) (a))[15] == 1 )

#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)

#define IN6_IS_ADDR_LINKLOCAL(a) \
        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0x80)

#define IN6_IS_ADDR_SITELOCAL(a) \
        ((((uint8_t *) (a))[0]) == 0xfe && (((uint8_t *) (a))[1] & 0xc0) == 0xc0)

#define IN6_IS_ADDR_V4MAPPED(a) \
        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
         ((uint8_t *) (a))[8] == 0 && ((uint8_t *) (a))[9] == 0 && \
         ((uint8_t *) (a))[10] == 0xff && ((uint8_t *) (a))[11] == 0xff)

#define IN6_IS_ADDR_V4COMPAT(a) \
        (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
         ((uint32_t *) (a))[2] == 0 && ((uint8_t *) (a))[15] > 1)

#define IN6_IS_ADDR_MC_NODELOCAL(a) \
        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x1))

#define IN6_IS_ADDR_MC_LINKLOCAL(a) \
        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x2))

#define IN6_IS_ADDR_MC_SITELOCAL(a) \
        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x5))

#define IN6_IS_ADDR_MC_ORGLOCAL(a) \
        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0x8))

#define IN6_IS_ADDR_MC_GLOBAL(a) \
        (IN6_IS_ADDR_MULTICAST(a) && ((((uint8_t *) (a))[1] & 0xf) == 0xe))

#define __ARE_4_EQUAL(a,b) \
	(!( (0[a]-0[b]) | (1[a]-1[b]) | (2[a]-2[b]) | (3[a]-3[b]) ))
#define IN6_ARE_ADDR_EQUAL(a,b) \
	__ARE_4_EQUAL((const uint32_t *)(a), (const uint32_t *)(b))

#define	IN_CLASSA(a)		((((in_addr_t)(a)) & 0x80000000) == 0)
#define	IN_CLASSA_NET		0xff000000
#define	IN_CLASSA_NSHIFT	24
#define	IN_CLASSA_HOST		(0xffffffff & ~IN_CLASSA_NET)
#define	IN_CLASSA_MAX		128
#define	IN_CLASSB(a)		((((in_addr_t)(a)) & 0xc0000000) == 0x80000000)
#define	IN_CLASSB_NET		0xffff0000
#define	IN_CLASSB_NSHIFT	16
#define	IN_CLASSB_HOST		(0xffffffff & ~IN_CLASSB_NET)
#define	IN_CLASSB_MAX		65536
#define	IN_CLASSC(a)		((((in_addr_t)(a)) & 0xe0000000) == 0xc0000000)
#define	IN_CLASSC_NET		0xffffff00
#define	IN_CLASSC_NSHIFT	8
#define	IN_CLASSC_HOST		(0xffffffff & ~IN_CLASSC_NET)
#define	IN_CLASSD(a)		((((in_addr_t)(a)) & 0xf0000000) == 0xe0000000)
#define	IN_MULTICAST(a)		IN_CLASSD(a)
#define	IN_EXPERIMENTAL(a)	((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
#define	IN_BADCLASS(a)		((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)

#define IN_LOOPBACKNET 127


#define IP_TOS             1
#define IP_TTL             2
#define IP_HDRINCL         3
#define IP_OPTIONS         4
#define IP_ROUTER_ALERT    5
#define IP_RECVOPTS        6
#define IP_RETOPTS         7
#define IP_PKTINFO         8
#define IP_PKTOPTIONS      9
#define IP_PMTUDISC        10
#define IP_MTU_DISCOVER    10
#define IP_RECVERR         11
#define IP_RECVTTL         12
#define IP_RECVTOS         13
#define IP_MTU             14
#define IP_FREEBIND        15
#define IP_IPSEC_POLICY    16
#define IP_XFRM_POLICY     17
#define IP_PASSSEC         18
#define IP_TRANSPARENT     19
#define IP_ORIGDSTADDR     20
#define IP_RECVORIGDSTADDR IP_ORIGDSTADDR
#define IP_MINTTL          21
#define IP_NODEFRAG        22
#define IP_MULTICAST_IF    32
#define IP_MULTICAST_TTL   33
#define IP_MULTICAST_LOOP  34
#define IP_ADD_MEMBERSHIP  35
#define IP_DROP_MEMBERSHIP 36
#define IP_UNBLOCK_SOURCE  37
#define IP_BLOCK_SOURCE    38
#define IP_ADD_SOURCE_MEMBERSHIP  39
#define IP_DROP_SOURCE_MEMBERSHIP 40
#define IP_MSFILTER        41
#define IP_MULTICAST_ALL   49
#define IP_UNICAST_IF      50

#define IP_RECVRETOPTS IP_RETOPTS

#define IP_PMTUDISC_DONT   0
#define IP_PMTUDISC_WANT   1
#define IP_PMTUDISC_DO     2
#define IP_PMTUDISC_PROBE  3
#define IP_PMTUDISC_INTERFACE 4
#define IP_PMTUDISC_OMIT   5

#define IP_DEFAULT_MULTICAST_TTL        1
#define IP_DEFAULT_MULTICAST_LOOP       1
#define IP_MAX_MEMBERSHIPS              20

struct ip_opts
{
	struct in_addr ip_dst;
	char ip_opts[40];
};

#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)

#define MCAST_JOIN_GROUP   42
#define MCAST_BLOCK_SOURCE 43
#define MCAST_UNBLOCK_SOURCE      44
#define MCAST_LEAVE_GROUP  45
#define MCAST_JOIN_SOURCE_GROUP   46
#define MCAST_LEAVE_SOURCE_GROUP  47
#define MCAST_MSFILTER     48

#define MCAST_EXCLUDE 0
#define MCAST_INCLUDE 1

struct ip_mreq
{
	struct in_addr imr_multiaddr;
	struct in_addr imr_interface;
};

struct ip_mreqn
{
	struct in_addr imr_multiaddr;
	struct in_addr imr_address;
	int imr_ifindex;
};

struct ip_mreq_source {
	struct in_addr imr_multiaddr;
	struct in_addr imr_interface;
	struct in_addr imr_sourceaddr;
};

struct ip_msfilter {
	struct in_addr imsf_multiaddr;
	struct in_addr imsf_interface;
	uint32_t imsf_fmode;
	uint32_t imsf_numsrc;
	struct in_addr imsf_slist[1];
};
#define IP_MSFILTER_SIZE(numsrc) \
	(sizeof(struct ip_msfilter) - sizeof(struct in_addr) \
	+ (numsrc) * sizeof(struct in_addr))

struct group_req {
	uint32_t gr_interface;
	struct sockaddr_storage gr_group;
};

struct group_source_req {
	uint32_t gsr_interface;
	struct sockaddr_storage gsr_group;
	struct sockaddr_storage gsr_source;
};

struct group_filter {
	uint32_t gf_interface;
	struct sockaddr_storage gf_group;
	uint32_t gf_fmode;
	uint32_t gf_numsrc;
	struct sockaddr_storage gf_slist[1];
};
#define GROUP_FILTER_SIZE(numsrc) \
	(sizeof(struct group_filter) - sizeof(struct sockaddr_storage) \
	+ (numsrc) * sizeof(struct sockaddr_storage))

struct in_pktinfo
{
	int ipi_ifindex;
	struct in_addr ipi_spec_dst;
	struct in_addr ipi_addr;
};

struct in6_pktinfo
{
	struct in6_addr ipi6_addr;
	unsigned ipi6_ifindex;
};

struct ip6_mtuinfo
{
	struct sockaddr_in6 ip6m_addr;
	uint32_t ip6m_mtu;
};
#endif

#define IPV6_ADDRFORM           1
#define IPV6_2292PKTINFO        2
#define IPV6_2292HOPOPTS        3
#define IPV6_2292DSTOPTS        4
#define IPV6_2292RTHDR          5
#define IPV6_2292PKTOPTIONS     6
#define IPV6_CHECKSUM           7
#define IPV6_2292HOPLIMIT       8
#define IPV6_NEXTHOP            9
#define IPV6_AUTHHDR            10
#define IPV6_UNICAST_HOPS       16
#define IPV6_MULTICAST_IF       17
#define IPV6_MULTICAST_HOPS     18
#define IPV6_MULTICAST_LOOP     19
#define IPV6_JOIN_GROUP         20
#define IPV6_LEAVE_GROUP        21
#define IPV6_ROUTER_ALERT       22
#define IPV6_MTU_DISCOVER       23
#define IPV6_MTU                24
#define IPV6_RECVERR            25
#define IPV6_V6ONLY             26
#define IPV6_JOIN_ANYCAST       27
#define IPV6_LEAVE_ANYCAST      28
#define IPV6_IPSEC_POLICY       34
#define IPV6_XFRM_POLICY        35

#define IPV6_RECVPKTINFO        49
#define IPV6_PKTINFO            50
#define IPV6_RECVHOPLIMIT       51
#define IPV6_HOPLIMIT           52
#define IPV6_RECVHOPOPTS        53
#define IPV6_HOPOPTS            54
#define IPV6_RTHDRDSTOPTS       55
#define IPV6_RECVRTHDR          56
#define IPV6_RTHDR              57
#define IPV6_RECVDSTOPTS        58
#define IPV6_DSTOPTS            59
#define IPV6_RECVPATHMTU        60
#define IPV6_PATHMTU            61
#define IPV6_DONTFRAG           62
#define IPV6_RECVTCLASS         66
#define IPV6_TCLASS             67
#define IPV6_ADDR_PREFERENCES   72
#define IPV6_MINHOPCOUNT        73
#define IPV6_ORIGDSTADDR        74
#define IPV6_RECVORIGDSTADDR    IPV6_ORIGDSTADDR
#define IPV6_TRANSPARENT        75
#define IPV6_UNICAST_IF         76

#define IPV6_ADD_MEMBERSHIP     IPV6_JOIN_GROUP
#define IPV6_DROP_MEMBERSHIP    IPV6_LEAVE_GROUP
#define IPV6_RXHOPOPTS          IPV6_HOPOPTS
#define IPV6_RXDSTOPTS          IPV6_DSTOPTS

#define IPV6_PMTUDISC_DONT      0
#define IPV6_PMTUDISC_WANT      1
#define IPV6_PMTUDISC_DO        2
#define IPV6_PMTUDISC_PROBE     3
#define IPV6_PMTUDISC_INTERFACE 4
#define IPV6_PMTUDISC_OMIT      5

#define IPV6_PREFER_SRC_TMP            0x0001
#define IPV6_PREFER_SRC_PUBLIC         0x0002
#define IPV6_PREFER_SRC_PUBTMP_DEFAULT 0x0100
#define IPV6_PREFER_SRC_COA            0x0004
#define IPV6_PREFER_SRC_HOME           0x0400
#define IPV6_PREFER_SRC_CGA            0x0008
#define IPV6_PREFER_SRC_NONCGA         0x0800

#define IPV6_RTHDR_LOOSE        0
#define IPV6_RTHDR_STRICT       1

#define IPV6_RTHDR_TYPE_0       0

#ifdef __cplusplus
}
#endif

#endif