ipsec_icmp_pmtu.h

ipsec PNE 3.3 source code, running at more than vxworks6.x version.

/* ipsec_icmp_pmtu.h - structures and forward declarations for pmtu support */

/******************************************************************************/
/* Copyright 2000-2001 Wind River Systems, Inc. 							  */
/******************************************************************************/
/* ipsec_icmp_pmtu.h - modification history
--------------------------------------------------
01d,03jun03,sam(teamf1) added macros MIN_TRANSPORT_HDR_LEN and ICMP6_MINLEN
01c,24apr03,sam(teamf1)	code cleanup. Renamed all functions to follow coding
            conventions.			
01b,15apr03,sam(teamf1)	Added code for PMTU support (SPR #86677).
01a,20Sep02,rks(teamf1) written 
*/

#if !defined (_IPSEC_ICMP_PMTU_H_)
#define _IPSEC_ICMP_PMTU_H_

#define IPSEC_PMTU_MESSAGE_LENGTH       84
#define MIN_TRANSPORT_HDR_LEN           8
#define ICMP6_MINLEN                    ICMP_MINLEN

typedef struct IPSEC_PMTU_MESSAGE
    {
    WRSEC_INET_ADDR_FAMILY family;
    USHORT pmtu;
    UCHAR ip_nxt_protocol;
    WRSEC_INET_ADDR *destination_address;
    UCHAR *data;
    USHORT datalength;
    BOOL transport;
    } IPSEC_PMTU_MESSAGE;

typedef struct SA_BUNDLE_INFO
    {
    ULONG spi;
    TRANSPORT_PROTOCOL protocol;
    WRSEC_INET_ADDR *tunnel_endpoint;
    SA_BUNDLE *p_sa_bundle;
    } SA_BUNDLE_INFO;

BOOL ipsecIsIcmpPmtuMessage
    (
    struct mbuf *m,
    struct ip *ip
    );

STATUS ipsecIcmpPmtuMessageProcess
    (
    struct mbuf ** m,
    struct ip *ip
    );

void ipsecPmtuSendPmtuMessage
    (
    struct mbuf *m,
    SA_BUNDLE *p_sabundle
    );

STATUS ipsecPmtuIsPacketBiggerThanPmtu
    (
    struct mbuf *m,
    SA_BUNDLE *pSABundle
    );

BOOL ipsecIsIcmp6Message
    (
    struct mbuf *m
    );
#endif /* _IPSEC_ICMP_PMTU_H_ */