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/*!\file netinet/ip_var.h |
* Internal IP definitions and statistics. |
*/ |
|
/* |
* 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 |
* $Id: ip_var.h,v 1.24.2.2 1996/11/12 11:28:59 phk Exp $ |
*/ |
|
#ifndef __NETINET_IP_VAR_H |
#define __NETINET_IP_VAR_H |
|
#include <sys/packon.h> |
|
#if defined(__TURBOC__) || defined(__BORLANDC__) |
#pragma warn -bbf- /* "Bitfields must be signed or unsigned int" warning */ |
#endif |
|
/* |
* 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 */ |
u_short ih_len; /* protocol length */ |
struct in_addr ih_src; /* source internet address */ |
struct in_addr ih_dst; /* destination internet address */ |
}; |
|
|
/* |
* Ip header, when holding a fragment. |
* |
* Note: ipf_next must be at same offset as ipq_next above |
*/ |
struct ipasfrag { |
u_char ip_hl:4; |
u_char ip_v:4; |
u_char ipf_mff; /* XXX overlays ip_tos: use low bit |
* to avoid destroying tos; |
* copied from (ip_off&IP_MF) */ |
u_short ip_len; |
u_short ip_id; |
u_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 */ |
}; |
|
#include <sys/packoff.h> |
|
/* |
* 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; |
#ifdef IPDIVERT |
u_short ipq_divert; /* divert protocol port */ |
#endif |
}; |
|
/* |
* 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 */ |
}; |
|
/* |
* Structure attached to inpcb.ip_moptions and |
* passed to ip_output when IP multicast options are in use. |
*/ |
struct ip_moptions { |
struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */ |
u_char imo_multicast_ttl; /* TTL for outgoing multicasts */ |
u_char imo_multicast_loop; /* 1 => hear sends if a member */ |
u_short imo_num_memberships; /* no. memberships this socket */ |
struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS]; |
u_long imo_multicast_vif; /* vif num outgoing multicasts */ |
}; |
|
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 out packets due to nobufs, etc. */ |
u_long ips_idropped; /*!! new, lost in 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_toolong; /* ip length > max ip packet size */ |
}; |
|
#if defined(__TURBOC__) || defined(__BORLANDC__) |
#pragma warn -bbf. |
#endif |
|
#endif |