user_ip6_var.h

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/*-
 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */
/*-
 * Copyright (c) 1982, 1986, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#ifndef _USER_IP6_VAR_H_
#define _USER_IP6_VAR_H_

#if defined(__Userspace_os_Windows)
struct ip6_hdr {
    union {
        struct ip6_hdrctl {
            u_int32_t ip6_un1_flow; /* 20 bits of flow-ID */
            u_int16_t ip6_un1_plen; /* payload length */
            u_int8_t  ip6_un1_nxt;  /* next header */
            u_int8_t  ip6_un1_hlim; /* hop limit */
        } ip6_un1;
        u_int8_t ip6_un2_vfc;   /* 4 bits version, top 4 bits class */
    } ip6_ctlun;
    struct in6_addr ip6_src;    /* source address */
    struct in6_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

#define IPV6_VERSION        0x60
#endif

#if defined(__Userspace_os_Windows)
#define s6_addr16 u.Word
#endif
#if !defined(__Userspace_os_Windows)
#if !defined(__Userspace_os_Linux)
#define s6_addr8  __u6_addr.__u6_addr8
#define s6_addr16 __u6_addr.__u6_addr16
#define s6_addr32 __u6_addr.__u6_addr32
#endif
#endif

#if !defined(__Userspace_os_FreeBSD) && !defined(__Userspace_os_OpenBSD) && !defined(__Userspace_os_DragonFly)
struct route_in6 {
    struct  rtentry *ro_rt;
    struct  llentry *ro_lle;
    struct  in6_addr *ro_ia6;
    int     ro_flags;
    struct  sockaddr_in6 ro_dst;
};
#endif
#define IP6_EXTHDR_GET(val, typ, m, off, len) \
do {                                    \
    struct mbuf *t;                         \
    int tmp;                            \
    if ((m)->m_len >= (off) + (len))                \
        (val) = (typ)(mtod((m), caddr_t) + (off));      \
    else {                              \
        t = m_pulldown((m), (off), (len), &tmp);        \
        if (t) {                        \
            KASSERT(t->m_len >= tmp + (len),        \
                    ("m_pulldown malfunction"));        \
            (val) = (typ)(mtod(t, caddr_t) + tmp);      \
        } else {                        \
            (val) = (typ)NULL;              \
            (m) = NULL;                 \
        }                           \
    }                               \
} while (0)

#endif /* !_USER_IP6_VAR_H_ */