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/*
* Copyright (c) 1997-2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* Overlay for ip header used by other protocols (tcp, udp).
*/
#ifndef _NETINET_IP_VAR_H
#define _NETINET_IP_VAR_H
/* ip_var.h 1.11 88/08/19 SMI; from UCB 7.1 6/5/86 */
#include <sys/isa_defs.h>
#ifdef __cplusplus
extern "C" {
#endif
struct ipovly {
#ifdef _LP64
uint32_t ih_next, ih_prev;
#else
caddr_t ih_next, ih_prev; /* for protocol sequence q's */
#endif
uchar_t ih_x1; /* (unused) */
uchar_t 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 */
uchar_t ipq_ttl; /* time for reass q to live */
uchar_t ipq_p; /* protocol of this fragment */
ushort_t 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 {
#ifdef _BIT_FIELDS_LTOH
uchar_t ip_hl:4,
ip_v:4;
#else
uchar_t ip_v:4,
ip_hl:4;
#endif
uchar_t ipf_mff; /* copied from (ip_off&IP_MF) */
short ip_len;
ushort_t ip_id;
short ip_off;
uchar_t ip_ttl;
uchar_t ip_p;
ushort_t 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 */
};
#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 */
#endif
#ifdef __cplusplus
}
#endif
#endif /* _NETINET_IP_VAR_H */
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