diff options
Diffstat (limited to 'sys/netinet/ip_var.h')
| -rw-r--r-- | sys/netinet/ip_var.h | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/sys/netinet/ip_var.h b/sys/netinet/ip_var.h new file mode 100644 index 000000000000..9cdfbe1a5aee --- /dev/null +++ b/sys/netinet/ip_var.h @@ -0,0 +1,137 @@ +/* + * Copyright (c) 1982, 1986 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. + * + * from: @(#)ip_var.h 7.7 (Berkeley) 6/28/90 + * $Id: ip_var.h,v 1.2 1993/10/16 18:26:17 rgrimes Exp $ + */ + +/* + * 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 */ + 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 */ + 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; +}; + +/* + * Ip header, when holding a fragment. + * + * Note: ipf_next must be at same offset as ipq_next above + */ +struct ipasfrag { +#if BYTE_ORDER == LITTLE_ENDIAN + u_char ip_hl:4, + ip_v:4; +#endif +#if BYTE_ORDER == BIG_ENDIAN + u_char ip_v:4, + ip_hl:4; +#endif + u_char ipf_mff; /* copied from (ip_off&IP_MF) */ + short ip_len; + u_short ip_id; + 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 */ +}; + +/* + * 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 */ + long ips_noproto; /* unknown or unsupported protocol */ + long ips_delivered; /* packets consumed here */ + long ips_localout; /* total ip packets generated here */ + long ips_odropped; /* lost packets due to nobufs, etc. */ + long ips_reassembled; /* total packets reassembled ok */ + long ips_fragmented; /* output packets fragmented ok */ + long ips_ofragments; /* output fragments created */ + long ips_cantfrag; /* don't fragment flag was set, etc. */ +}; + +#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 */ + +struct ipstat ipstat; +struct ipq ipq; /* ip reass. queue */ +u_short ip_id; /* ip packet ctr, for ids */ + +struct mbuf *ip_srcroute(); +#endif |