ip_var.h
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上传日期:2008-05-12
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文件大小:8k
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VxWorks
开发平台:
C/C++
- /* ip_var.h - internet protocol protocol variable header file */
- /* Copyright 1984 - 2002 Wind River Systems, Inc. */
- /*
- * 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.
- * 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.
- *
- * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
- */
- /*
- modification history
- --------------------
- 01h,15apr02,wap reinstate netJobAdd() removal changes
- 01g,29mar02,wap back out the previous change (needs more investigation)
- 01f,22mar02,rae ipintr mod helps remove extra netJobAdd (SPR #74604)
- 01e,10oct01,rae merge from truestack (ip_mroute update, VIRTUAL)
- 01d,05oct97,vin moved ip_moptions to in_pcb.h for multicast hashing changes.
- 01c,31jan97,vin changed declaration according to prototype decl in protosw.h
- 01b,22nov96,vin modified ipq for new ipReAssembly
- 01a,03mar96,vin created from BSD4.4lite2. corrected bit fields according to
- ansi specfication
- */
- #ifndef __INCip_varh
- #define __INCip_varh
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include "net/if.h"
- #include "netinet/in.h"
- #include "netinet/in_pcb.h"
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * 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 mbuf * pMbufHdr; /* back pointer to mbuf */
- struct mbuf * pMbufPkt; /* pointer to mbuf packet */
- /* 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_int ip_hl:4,
- ip_v:4,
- #endif
- #if _BYTE_ORDER == _BIG_ENDIAN
- u_int ip_v:4,
- ip_hl:4,
- #endif
- ipf_mff:8, /* XXX overlays ip_tos: use low bit
- * to avoid destroying tos;
- * copied from (ip_off&IP_MF) */
- ip_len:16;
- u_short ip_id;
- short ip_off;
- u_char ip_ttl;
- u_char ip_p;
- u_short ip_sum;
- struct in_addr ip_src,ip_dst; /* source and dest address */
- };
- /*
- * 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 {
- u_long ips_total; /* total packets received */
- u_long ips_badsum; /* checksum bad */
- u_long ips_tooshort; /* packet too short */
- u_long ips_toosmall; /* not enough data */
- u_long ips_badhlen; /* ip header length < data size */
- u_long ips_badlen; /* ip length < ip header length */
- u_long ips_fragments; /* fragments received */
- u_long ips_fragdropped; /* frags dropped (dups, out of space) */
- u_long ips_fragtimeout; /* fragments timed out */
- u_long ips_forward; /* packets forwarded */
- u_long ips_cantforward; /* packets rcvd for unreachable dest */
- u_long ips_redirectsent; /* packets forwarded on same net */
- u_long ips_noproto; /* unknown or unsupported protocol */
- u_long ips_delivered; /* datagrams delivered to upper level*/
- u_long ips_localout; /* total ip packets generated here */
- u_long ips_odropped; /* lost packets due to nobufs, etc. */
- u_long ips_reassembled; /* total packets reassembled ok */
- u_long ips_fragmented; /* datagrams sucessfully fragmented */
- u_long ips_ofragments; /* output fragments created */
- u_long ips_cantfrag; /* don't fragment flag was set, etc. */
- u_long ips_badoptions; /* error in option processing */
- u_long ips_noroute; /* packets discarded due to no route */
- u_long ips_badvers; /* ip version != 4 */
- u_long ips_rawout; /* total raw ip packets generated */
- };
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- /* flags passed to ip_output as last parameter */
- #define IP_FORWARDING 0x1 /* most of ip header exists */
- #define IP_RAWOUTPUT 0x2 /* raw ip header exists */
- #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
- #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
- #define ipTimeToLive ip_defttl /* MIB-II Read Write Variable */
- #ifndef VIRTUAL_STACK
- extern struct ipstat ipstat;
- extern struct ipq ipq; /* ip reass. queue */
- extern u_short ip_id; /* ip packet ctr, for ids */
- extern int ip_defttl; /* default IP ttl */
- #endif /* VIRTUAL_STACK */
- extern int ip_ctloutput (int, struct socket *, int, int, struct mbuf **);
- extern void ip_deq (struct ipasfrag *);
- extern int ip_dooptions (struct mbuf *);
- extern void ip_drain (void);
- extern void ip_enq (struct ipasfrag *, struct ipasfrag *);
- extern void ip_forward (struct mbuf *, int);
- extern void ip_freef (struct ipq *);
- extern void ip_freemoptions (struct ip_moptions *, struct inpcb *);
- extern int ip_getmoptions (int, struct ip_moptions *, struct mbuf **);
- extern void ip_init (void);
- extern int ip_mforward (struct mbuf *, struct ifnet *, struct ip *, struct ip_moptions*);
- extern int ip_optcopy (struct ip *, struct ip *);
- extern int ip_output (struct mbuf *, struct mbuf *, struct route *,
- int, struct ip_moptions *);
- extern int ip_pcbopts (struct mbuf **, struct mbuf *);
- extern struct in_ifaddr * ip_rtaddr (struct in_addr);
- extern void ip_slowtimo (void);
- extern struct mbuf * ip_srcroute (void);
- extern void ip_stripoptions (struct mbuf *, struct mbuf *);
- extern int ip_sysctl (int *, u_int, void *, size_t *, void *, size_t);
- extern void ipintr (struct mbuf *m);
- extern int rip_ctloutput (int, struct socket *, int, int,
- struct mbuf **);
- extern void rip_init (void);
- extern void rip_input (struct mbuf *);
- extern int rip_output (struct mbuf *, struct socket *, u_long);
- extern int rip_usrreq (struct socket *, int, struct mbuf *,
- struct mbuf *, struct mbuf *);
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCip_varh */