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authorThe Android Open Source Project <initial-contribution@android.com>2009-01-09 17:51:21 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-01-09 17:51:21 -0800
commitc2db2b6accc7888df514261a7240e7759df95a4c (patch)
tree0d7ecd37a534c15348cbad01d0d1f84183b7b4d8 /slirp/ip.h
parentdf7881f07f53b041dc0568be8528e9dbb74994cc (diff)
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diff --git a/slirp/ip.h b/slirp/ip.h
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-/*
- * 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.h 8.1 (Berkeley) 6/10/93
- * ip.h,v 1.3 1994/08/21 05:27:30 paul Exp
- */
-
-#ifndef _IP_H_
-#define _IP_H_
-
-#ifdef WORDS_BIGENDIAN
-# ifndef NTOHL
-# define NTOHL(d)
-# endif
-# ifndef NTOHS
-# define NTOHS(d)
-# endif
-# ifndef HTONL
-# define HTONL(d)
-# endif
-# ifndef HTONS
-# define HTONS(d)
-# endif
-#else
-# ifndef NTOHL
-# define NTOHL(d) ((d) = ntohl((d)))
-# endif
-# ifndef NTOHS
-# define NTOHS(d) ((d) = ntohs((u_int16_t)(d)))
-# endif
-# ifndef HTONL
-# define HTONL(d) ((d) = htonl((d)))
-# endif
-# ifndef HTONS
-# define HTONS(d) ((d) = htons((u_int16_t)(d)))
-# endif
-#endif
-
-typedef u_int32_t n_long; /* long as received from the net */
-
-/*
- * Definitions for internet protocol version 4.
- * Per RFC 791, September 1981.
- */
-#define IPVERSION 4
-
-/*
- * Structure of an internet header, naked of options.
- */
-struct ip {
-#ifdef WORDS_BIGENDIAN
- u_int ip_v:4, /* version */
- ip_hl:4; /* header length */
-#else
- u_int ip_hl:4, /* header length */
- ip_v:4; /* version */
-#endif
- u_int8_t ip_tos; /* type of service */
- u_int16_t ip_len; /* total length */
- u_int16_t ip_id; /* identification */
- u_int16_t ip_off; /* fragment offset field */
-#define IP_DF 0x4000 /* don't fragment flag */
-#define IP_MF 0x2000 /* more fragments flag */
-#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
- u_int8_t ip_ttl; /* time to live */
- u_int8_t ip_p; /* protocol */
- u_int16_t ip_sum; /* checksum */
- struct in_addr ip_src,ip_dst; /* source and dest address */
-};
-
-#define IP_MAXPACKET 65535 /* maximum packet size */
-
-/*
- * Definitions for IP type of service (ip_tos)
- */
-#define IPTOS_LOWDELAY 0x10
-#define IPTOS_THROUGHPUT 0x08
-#define IPTOS_RELIABILITY 0x04
-
-/*
- * Definitions for options.
- */
-#define IPOPT_COPIED(o) ((o)&0x80)
-#define IPOPT_CLASS(o) ((o)&0x60)
-#define IPOPT_NUMBER(o) ((o)&0x1f)
-
-#define IPOPT_CONTROL 0x00
-#define IPOPT_RESERVED1 0x20
-#define IPOPT_DEBMEAS 0x40
-#define IPOPT_RESERVED2 0x60
-
-#define IPOPT_EOL 0 /* end of option list */
-#define IPOPT_NOP 1 /* no operation */
-
-#define IPOPT_RR 7 /* record packet route */
-#define IPOPT_TS 68 /* timestamp */
-#define IPOPT_SECURITY 130 /* provide s,c,h,tcc */
-#define IPOPT_LSRR 131 /* loose source route */
-#define IPOPT_SATID 136 /* satnet id */
-#define IPOPT_SSRR 137 /* strict source route */
-
-/*
- * Offsets to fields in options other than EOL and NOP.
- */
-#define IPOPT_OPTVAL 0 /* option ID */
-#define IPOPT_OLEN 1 /* option length */
-#define IPOPT_OFFSET 2 /* offset within option */
-#define IPOPT_MINOFF 4 /* min value of above */
-
-/*
- * Time stamp option structure.
- */
-struct ip_timestamp {
- u_int8_t ipt_code; /* IPOPT_TS */
- u_int8_t ipt_len; /* size of structure (variable) */
- u_int8_t ipt_ptr; /* index of current entry */
-#ifdef WORDS_BIGENDIAN
- u_int ipt_oflw:4, /* overflow counter */
- ipt_flg:4; /* flags, see below */
-#else
- u_int ipt_flg:4, /* flags, see below */
- ipt_oflw:4; /* overflow counter */
-#endif
- union ipt_timestamp {
- n_long ipt_time[1];
- struct ipt_ta {
- struct in_addr ipt_addr;
- n_long ipt_time;
- } ipt_ta[1];
- } ipt_timestamp;
-};
-
-/* flag bits for ipt_flg */
-#define IPOPT_TS_TSONLY 0 /* timestamps only */
-#define IPOPT_TS_TSANDADDR 1 /* timestamps and addresses */
-#define IPOPT_TS_PRESPEC 3 /* specified modules only */
-
-/* bits for security (not byte swapped) */
-#define IPOPT_SECUR_UNCLASS 0x0000
-#define IPOPT_SECUR_CONFID 0xf135
-#define IPOPT_SECUR_EFTO 0x789a
-#define IPOPT_SECUR_MMMM 0xbc4d
-#define IPOPT_SECUR_RESTR 0xaf13
-#define IPOPT_SECUR_SECRET 0xd788
-#define IPOPT_SECUR_TOPSECRET 0x6bc5
-
-/*
- * Internet implementation parameters.
- */
-#define MAXTTL 255 /* maximum time to live (seconds) */
-#define IPDEFTTL 64 /* default ttl, from RFC 1340 */
-#define IPFRAGTTL 60 /* time to live for frags, slowhz */
-#define IPTTLDEC 1 /* subtracted when forwarding */
-
-#define IP_MSS 576 /* default maximum segment size */
-
-#ifdef HAVE_SYS_TYPES32_H /* Overcome some Solaris 2.x junk */
-#include <sys/types32.h>
-#else
-#if SIZEOF_CHAR_P == 4
-typedef caddr_t caddr32_t;
-#else
-typedef u_int32_t caddr32_t;
-#endif
-#endif
-
-#if SIZEOF_CHAR_P == 4
-typedef struct ipq *ipqp_32;
-typedef struct ipasfrag *ipasfragp_32;
-#else
-typedef caddr32_t ipqp_32;
-typedef caddr32_t ipasfragp_32;
-#endif
-
-/*
- * Overlay for ip header used by other protocols (tcp, udp).
- */
-struct ipovly {
- caddr32_t ih_next, ih_prev; /* for protocol sequence q's */
- u_int8_t ih_x1; /* (unused) */
- u_int8_t ih_pr; /* protocol */
- u_int16_t 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.
- * size 28 bytes
- */
-struct ipq {
- ipqp_32 next,prev; /* to other reass headers */
- u_int8_t ipq_ttl; /* time for reass q to live */
- u_int8_t ipq_p; /* protocol of this fragment */
- u_int16_t ipq_id; /* sequence id for reassembly */
- ipasfragp_32 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 {
-#ifdef WORDS_BIGENDIAN
- u_int ip_v:4,
- ip_hl:4;
-#else
- u_int ip_hl:4,
- ip_v:4;
-#endif
- /* BUG : u_int changed to u_int8_t.
- * sizeof(u_int)==4 on linux 2.0
- */
- u_int8_t ipf_mff; /* XXX overlays ip_tos: use low bit
- * to avoid destroying tos (PPPDTRuu);
- * copied from (ip_off&IP_MF) */
- u_int16_t ip_len;
- u_int16_t ip_id;
- u_int16_t ip_off;
- u_int8_t ip_ttl;
- u_int8_t ip_p;
- u_int16_t ip_sum;
- ipasfragp_32 ipf_next; /* next fragment */
- ipasfragp_32 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 */
- int8_t ipopt_list[MAX_IPOPTLEN]; /* options proper */
-};
-
-/*
- * Structure attached to inpcb.ip_moptions and
- * passed to ip_output when IP multicast options are in use.
- */
-
-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 successfully 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 */
- u_long ips_unaligned; /* times the ip packet was not aligned */
-};
-
-extern struct ipstat ipstat;
-extern struct ipq ipq; /* ip reass. queue */
-extern u_int16_t ip_id; /* ip packet ctr, for ids */
-extern int ip_defttl; /* default IP ttl */
-
-#endif