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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 |