f0cbd3ec9f
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@733 c046a42c-6fe2-441c-8c8c-71466251a162
318 lines
9.8 KiB
C
318 lines
9.8 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* We declare ip_len and ip_off to be short, rather than u_short
|
|
* pragmatically since otherwise unsigned comparisons can result
|
|
* against negative integers quite easily, and fail in subtle ways.
|
|
*/
|
|
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 */
|
|
int16_t ip_len; /* total length */
|
|
u_int16_t ip_id; /* identification */
|
|
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 */
|
|
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) */
|
|
int16_t ip_len;
|
|
u_int16_t ip_id;
|
|
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
|