sctp_defs.h

No7信令,我需要交换类似的代码, 请店长审核,谢谢了,急着交换,谢谢

	uint32_t	    addr;
};
struct sctp_ipv6_addr {
	struct sctpphdr	    ph;
};
struct sctp_state_cookie {
	struct sctpphdr	    ph;
	struct sctp_cookie  cookie[0];
};
struct sctp_unrec_parms {
	struct sctpphdr	    ph;
};
struct sctp_cookie_psrv {
	struct sctpphdr	    ph;
	uint32_t	    ck_inc;
};
struct sctp_host_name {
	struct sctpphdr	    ph;
};
struct sctp_addr_type {
	struct sctpphdr	    ph;
	uint16_t	    type[0];
};
union sctp_parm {
	struct sctpphdr		    ph;
	struct sctp_heartbeat_info  heartbeat_info;
	struct sctp_ipv4_addr	    ipv4_addr;
	struct sctp_ipv6_addr	    ipv6_addr;
	struct sctp_state_cookie    state_cookie;
	struct sctp_unrec_parms	    unrec_parms;
	struct sctp_cookie_psrv	    cookie_prsv;
	struct sctp_host_name	    host_name;
	struct sctp_addr_type	    addr_type;
};

/*
 *  SCTP Chunk Types
 */
#define SCTP_CTYPE_DATA			0
#define SCTP_CTYPE_INIT			1
#define SCTP_CTYPE_INIT_ACK		2
#define SCTP_CTYPE_SACK			3
#define SCTP_CTYPE_HEARTBEAT		4
#define SCTP_CTYPE_HEARTBEAT_ACK	5
#define SCTP_CTYPE_ABORT		6
#define SCTP_CTYPE_SHUTDOWN		7
#define SCTP_CTYPE_SHUTDOWN_ACK		8
#define SCTP_CTYPE_ERROR		9
#define SCTP_CTYPE_COOKIE_ECHO		10
#define SCTP_CTYPE_COOKIE_ACK		11
#define SCTP_CTYPE_ECNE			12
#define SCTP_CTYPE_CWR			13
#define SCTP_CTYPE_SHUTDOWN_COMPLETE	14

#define SCTP_CTYPE_MASK			0x3f
#define SCTP_CTYPE_MASK_CONTINUE	0x80
#define SCTP_CTYPE_MASK_REPORT		0x40

/*
 *  SCTP Chunk Structures
 */
struct sctp_data {
	struct sctpchdr ch;
	uint32_t    tsn;	/* Transmit Sequence Number          */
	uint16_t    sid;	/* Stream Identifier                 */
	uint16_t    ssn;	/* Stream Sequence Number            */
	uint32_t    ppi;	/* Payload Protocol Identifier       */
	uint8_t	    udat[0];	/* User data                         */
};
struct sctp_init {
	struct sctpchdr ch;
	uint32_t    i_tag;	/* Initiate Tag                      */
	uint32_t    a_rwnd;	/* Advertised Received Window Credit */
	uint16_t    n_ostr;	/* Number of Outbound Streams        */
	uint16_t    n_istr;	/* Number of Inbound  Streams        */
	uint32_t    i_tsn;	/* Initial TSN                       */
	
};
struct sctp_init_ack {
	struct sctpchdr ch;
	uint32_t    i_tag;	/* Initiate Tag			     */
	uint32_t    a_rwnd;	/* Advertised Received Window Credit */
	uint16_t    n_ostr;	/* Number of Outbound Streams	     */
	uint16_t    n_istr;	/* Number of Inbound  Streams	     */
	uint32_t    i_tsn;	/* Initial TSN			     */
};
struct sctp_sack {
	struct sctpchdr	ch;
	uint32_t    c_tsn;	/* Cumulative TSN Ack		     */
	uint32_t    a_rwnd;	/* Advertized Receiver Window Credit */
	uint16_t    ngaps;	/* Number of Gap Blocks		     */
	uint16_t    ndups;	/* Number of Duplicate TSNs	     */
	uint16_t    gaps[0];	/* Gap blocks			     */
	uint32_t    dups[0];	/* Duplicate TSNs		     */
};
struct sctp_heartbeat {
	struct sctpchdr	ch;
};
struct sctp_heartbeat_ack {
	struct sctpchdr	ch;
};
struct sctp_abort {
	struct sctpchdr	ch;
	union sctp_cause cause[0];
};
struct sctp_shutdown {
	struct sctpchdr	ch;
	uint32_t	c_tsn;	/* Cummulative TSN Ack		     */
};
struct sctp_shutdown_ack {
	struct sctpchdr	ch;
};
struct sctp_error {
	struct sctpchdr	ch;
	union sctp_cause cause[0];
};
struct sctp_cookie_echo {
	struct sctpchdr	ch;
	unsigned char	cookie[0];
};
struct sctp_cookie_ack {
	struct sctpchdr	ch;
};
struct sctp_ecne {
	struct sctpchdr	ch;
	uint32_t	l_tsn;
};
struct sctp_cwr {
	struct sctpchdr ch;
	uint32_t	l_tsn;
};
struct sctp_shutdown_comp {
	struct sctpchdr	ch;
};
union sctp_chunk {
	struct sctpchdr	ch;
	struct sctp_data	    data;
	struct sctp_init	    init;
	struct sctp_init_ack	    init_ack;
	struct sctp_sack	    sack;
	struct sctp_heartbeat	    heartbeat;
	struct sctp_heartbeat_ack   heartbeat_ack;
	struct sctp_abort	    abort;
	struct sctp_shutdown	    shutdown;
	struct sctp_shutdown_ack    shutdown_ack;
	struct sctp_error	    error;
	struct sctp_cookie_echo	    cookie_echo;
	struct sctp_cookie_ack	    cookie_ack;
	struct sctp_ecne	    ecne;
	struct sctp_cwr		    cwr;
	struct sctp_shutdown_comp   shutdown_comp;
};

/*
 *  SCTP Message Structures
 */
struct sctp_msg {
	struct sctphdr	 mh;
	union sctp_chunk chunk;
};

/*
 *  ADLER 32 CHECKSUM
 *  -------------------------------------------------------------------------
 *  Compute the adler32 checksum.  This follows the description in RFC 2960
 *  Appendix B.  Borrowed from zlib.c.
 */
#define BASE 65521L /* largest prime smaller than 65536 */
#define NMAX 5552   /* NMAX is the largest n such that
		       255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */

#define DO1(buf,i)  {s1 += buf[i]; s2 += s1;}
#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
#define DO16(buf)   DO8(buf,0); DO8(buf,8);

static inline uint32_t adler32(uint32_t adler, void *buf, size_t len)
{
        register uint32_t s1 = adler;
        register uint32_t s2 = (adler >> 16) & 0xffff;
        register uint8_t *ptr = buf;
	int k;

	if ( !ptr )
		return 1L;

	while ( len > 0 )
	{
		k = len < NMAX ? len : NMAX;
		len -= k;
		while ( k >= 16 )
		{
			DO16(ptr);
			ptr += 16;
			k   -= 16;
		}
		if ( k != 0 ) do
		{
			s1 += *ptr++;
			s2 += s1;
		}
		while ( --k );
		s1 %= BASE;
		s2 %= BASE;
	}
        return (s2 << 16) | s1;
}

/*
 *  Message control block datastructures:
 *  -------------------------------------------------------------------------
 */

/* message control block */
typedef struct sctp_tcb {
	/* for gaps, dups and acks on receive, frag on transmit */
	struct sctp_tcb *next;	    /* message linkage   */
	struct sctp_tcb *prev;	    /* message linkage   */
	struct sctp_tcb *tail;	    /* message linkage   */
	struct sctp_tcb *head;	    /* message linkage   */

	mblk_t *mp;		    /* message linkage   */
	struct sctp_daddr  *daddr;  /* daddr tx to or rx from		    */
	struct sctp_strm   *st;	    /* strm  tx to or rx from		    */
	struct sctp_cookie *cookie; /* cookie if this is COOKIE ECHO msg    */
	unsigned long when;	    /* time of tx/rx/ack		    */
	size_t trans;		    /* number of times retransmitted	    */
	size_t sacks;		    /* number of times gap acked	    */
	size_t dlen;		    /* data  length			    */

	ulong    flags;		    /* general flags inc. data chunk flags  */
	uint32_t tsn;	/* why do I need these?, they are in the chunk header */
	uint16_t sid;
	uint16_t ssn;
	uint32_t ppi;
} sctp_tcb_t;

#define SCTP_TCB(__mp) ((sctp_tcb_t *)((__mp)->b_datap->db_base))
#define SCTP_IPH(__mp) ((struct iphdr *)((__mp)->b_datap->db_base))

/*
 *  Some sctp_tcb flags.
 */
#define SCTPCB_FLAG_LAST_FRAG	0x0001  /* aligned with SCTP DATA chunk flags */
#define SCTPCB_FLAG_FIRST_FRAG	0x0002  /* aligned with SCTP DATA chunk flags */
#define SCTPCB_FLAG_URG		0x0004  /* aligned with SCTP DATA chunk flags */
#define SCTPCB_FLAG_UNUSED1	0x0100
#define SCTPCB_FLAG_DELIV	0x0200	/* delivered to user on read */
#define SCTPCB_FLAG_ACK		0x0400
#define SCTPCB_FLAG_NACK	0x0800
#define SCTPCB_FLAG_CONF	0x1000
#define SCTPCB_FLAG_SENT	0x2000
#define SCTPCB_FLAG_RETRANS	0x4000
#define SCTPCB_FLAG_SACKED	0x8000

#endif  __SCTP_DEFS_H__