143 lines
5.2 KiB
C
143 lines
5.2 KiB
C
/*
|
|
* Copyright (c) 1982, 1986 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.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 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.
|
|
*
|
|
* from: @(#)ip_var.h 7.7 (Berkeley) 6/28/90
|
|
* $Id: ip_var.h,v 1.3 1993/05/20 03:50:29 cgd Exp $
|
|
*/
|
|
|
|
#ifndef _NETINET_IP_VAR_H_
|
|
#define _NETINET_IP_VAR_H_
|
|
|
|
/*
|
|
* Overlay for ip header used by other protocols (tcp, udp).
|
|
*/
|
|
struct ipovly {
|
|
caddr_t ih_next, ih_prev; /* for protocol sequence q's */
|
|
u_char ih_x1; /* (unused) */
|
|
u_char ih_pr; /* protocol */
|
|
short ih_len; /* protocol length */
|
|
struct in_addr ih_src; /* source internet address */
|
|
struct in_addr ih_dst; /* destination internet address */
|
|
};
|
|
|
|
/*
|
|
* Ip reassembly queue structure. Each fragment
|
|
* being reassembled is attached to one of these structures.
|
|
* They are timed out after ipq_ttl drops to 0, and may also
|
|
* be reclaimed if memory becomes tight.
|
|
*/
|
|
struct ipq {
|
|
struct ipq *next,*prev; /* to other reass headers */
|
|
u_char ipq_ttl; /* time for reass q to live */
|
|
u_char ipq_p; /* protocol of this fragment */
|
|
u_short ipq_id; /* sequence id for reassembly */
|
|
struct ipasfrag *ipq_next,*ipq_prev;
|
|
/* to ip headers of fragments */
|
|
struct in_addr ipq_src,ipq_dst;
|
|
};
|
|
|
|
/*
|
|
* Ip header, when holding a fragment.
|
|
*
|
|
* Note: ipf_next must be at same offset as ipq_next above
|
|
*/
|
|
struct ipasfrag {
|
|
#if BYTE_ORDER == LITTLE_ENDIAN
|
|
u_char ip_hl:4,
|
|
ip_v:4;
|
|
#endif
|
|
#if BYTE_ORDER == BIG_ENDIAN
|
|
u_char ip_v:4,
|
|
ip_hl:4;
|
|
#endif
|
|
u_char ipf_mff; /* copied from (ip_off&IP_MF) */
|
|
short ip_len;
|
|
u_short ip_id;
|
|
short ip_off;
|
|
u_char ip_ttl;
|
|
u_char ip_p;
|
|
u_short ip_sum;
|
|
struct ipasfrag *ipf_next; /* next fragment */
|
|
struct ipasfrag *ipf_prev; /* previous fragment */
|
|
};
|
|
|
|
/*
|
|
* Structure stored in mbuf in inpcb.ip_options
|
|
* and passed to ip_output when ip options are in use.
|
|
* The actual length of the options (including ipopt_dst)
|
|
* is in m_len.
|
|
*/
|
|
#define MAX_IPOPTLEN 40
|
|
|
|
struct ipoption {
|
|
struct in_addr ipopt_dst; /* first-hop dst if source routed */
|
|
char ipopt_list[MAX_IPOPTLEN]; /* options proper */
|
|
};
|
|
|
|
struct ipstat {
|
|
long ips_total; /* total packets received */
|
|
long ips_badsum; /* checksum bad */
|
|
long ips_tooshort; /* packet too short */
|
|
long ips_toosmall; /* not enough data */
|
|
long ips_badhlen; /* ip header length < data size */
|
|
long ips_badlen; /* ip length < ip header length */
|
|
long ips_fragments; /* fragments received */
|
|
long ips_fragdropped; /* frags dropped (dups, out of space) */
|
|
long ips_fragtimeout; /* fragments timed out */
|
|
long ips_forward; /* packets forwarded */
|
|
long ips_cantforward; /* packets rcvd for unreachable dest */
|
|
long ips_redirectsent; /* packets forwarded on same net */
|
|
long ips_noproto; /* unknown or unsupported protocol */
|
|
long ips_delivered; /* packets consumed here */
|
|
long ips_localout; /* total ip packets generated here */
|
|
long ips_odropped; /* lost packets due to nobufs, etc. */
|
|
long ips_reassembled; /* total packets reassembled ok */
|
|
long ips_fragmented; /* output packets fragmented ok */
|
|
long ips_ofragments; /* output fragments created */
|
|
long ips_cantfrag; /* don't fragment flag was set, etc. */
|
|
};
|
|
|
|
#ifdef KERNEL
|
|
/* flags passed to ip_output as last parameter */
|
|
#define IP_FORWARDING 0x1 /* most of ip header exists */
|
|
#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
|
|
#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
|
|
|
|
struct ipstat ipstat;
|
|
struct ipq ipq; /* ip reass. queue */
|
|
u_short ip_id; /* ip packet ctr, for ids */
|
|
|
|
struct mbuf *ip_srcroute();
|
|
#endif
|
|
|
|
#endif /* !_NETINET_IP_VAR_H_ */
|