Annotation of embedaddon/pimdd/include/freebsd/netinet/ip_var.h, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (c) 1982, 1986, 1993
! 3: * The Regents of the University of California. All rights reserved.
! 4: *
! 5: * Redistribution and use in source and binary forms, with or without
! 6: * modification, are permitted provided that the following conditions
! 7: * are met:
! 8: * 1. Redistributions of source code must retain the above copyright
! 9: * notice, this list of conditions and the following disclaimer.
! 10: * 2. Redistributions in binary form must reproduce the above copyright
! 11: * notice, this list of conditions and the following disclaimer in the
! 12: * documentation and/or other materials provided with the distribution.
! 13: * 3. All advertising materials mentioning features or use of this software
! 14: * must display the following acknowledgement:
! 15: * This product includes software developed by the University of
! 16: * California, Berkeley and its contributors.
! 17: * 4. Neither the name of the University nor the names of its contributors
! 18: * may be used to endorse or promote products derived from this software
! 19: * without specific prior written permission.
! 20: *
! 21: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 22: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 23: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 24: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 25: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 26: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 27: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 28: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 29: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 30: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 31: * SUCH DAMAGE.
! 32: *
! 33: * @(#)ip_var.h 8.2 (Berkeley) 1/9/95
! 34: * $Id: ip_var.h,v 1.1.1.1 1998/05/11 17:39:35 kurtw Exp $
! 35: */
! 36:
! 37: #ifndef _NETINET_IP_VAR_H_
! 38: #define _NETINET_IP_VAR_H_
! 39:
! 40: /*
! 41: * Overlay for ip header used by other protocols (tcp, udp).
! 42: */
! 43: struct ipovly {
! 44: caddr_t ih_next, ih_prev; /* for protocol sequence q's */
! 45: u_char ih_x1; /* (unused) */
! 46: u_char ih_pr; /* protocol */
! 47: u_short ih_len; /* protocol length */
! 48: struct in_addr ih_src; /* source internet address */
! 49: struct in_addr ih_dst; /* destination internet address */
! 50: };
! 51:
! 52: /*
! 53: * Ip reassembly queue structure. Each fragment
! 54: * being reassembled is attached to one of these structures.
! 55: * They are timed out after ipq_ttl drops to 0, and may also
! 56: * be reclaimed if memory becomes tight.
! 57: */
! 58: struct ipq {
! 59: struct ipq *next,*prev; /* to other reass headers */
! 60: u_char ipq_ttl; /* time for reass q to live */
! 61: u_char ipq_p; /* protocol of this fragment */
! 62: u_short ipq_id; /* sequence id for reassembly */
! 63: struct ipasfrag *ipq_next,*ipq_prev;
! 64: /* to ip headers of fragments */
! 65: struct in_addr ipq_src,ipq_dst;
! 66: #ifdef IPDIVERT
! 67: u_short ipq_divert; /* divert protocol port */
! 68: #endif
! 69: };
! 70:
! 71: /*
! 72: * Ip header, when holding a fragment.
! 73: *
! 74: * Note: ipf_next must be at same offset as ipq_next above
! 75: */
! 76: struct ipasfrag {
! 77: #if BYTE_ORDER == LITTLE_ENDIAN
! 78: u_char ip_hl:4,
! 79: ip_v:4;
! 80: #endif
! 81: #if BYTE_ORDER == BIG_ENDIAN
! 82: u_char ip_v:4,
! 83: ip_hl:4;
! 84: #endif
! 85: u_char ipf_mff; /* XXX overlays ip_tos: use low bit
! 86: * to avoid destroying tos;
! 87: * copied from (ip_off&IP_MF) */
! 88: u_short ip_len;
! 89: u_short ip_id;
! 90: u_short ip_off;
! 91: u_char ip_ttl;
! 92: u_char ip_p;
! 93: u_short ip_sum;
! 94: struct ipasfrag *ipf_next; /* next fragment */
! 95: struct ipasfrag *ipf_prev; /* previous fragment */
! 96: };
! 97:
! 98: /*
! 99: * Structure stored in mbuf in inpcb.ip_options
! 100: * and passed to ip_output when ip options are in use.
! 101: * The actual length of the options (including ipopt_dst)
! 102: * is in m_len.
! 103: */
! 104: #define MAX_IPOPTLEN 40
! 105:
! 106: struct ipoption {
! 107: struct in_addr ipopt_dst; /* first-hop dst if source routed */
! 108: char ipopt_list[MAX_IPOPTLEN]; /* options proper */
! 109: };
! 110:
! 111: /*
! 112: * Structure attached to inpcb.ip_moptions and
! 113: * passed to ip_output when IP multicast options are in use.
! 114: */
! 115: struct ip_moptions {
! 116: struct ifnet *imo_multicast_ifp; /* ifp for outgoing multicasts */
! 117: u_char imo_multicast_ttl; /* TTL for outgoing multicasts */
! 118: u_char imo_multicast_loop; /* 1 => hear sends if a member */
! 119: u_short imo_num_memberships; /* no. memberships this socket */
! 120: struct in_multi *imo_membership[IP_MAX_MEMBERSHIPS];
! 121: u_long imo_multicast_vif; /* vif num outgoing multicasts */
! 122: };
! 123:
! 124: struct ipstat {
! 125: u_long ips_total; /* total packets received */
! 126: u_long ips_badsum; /* checksum bad */
! 127: u_long ips_tooshort; /* packet too short */
! 128: u_long ips_toosmall; /* not enough data */
! 129: u_long ips_badhlen; /* ip header length < data size */
! 130: u_long ips_badlen; /* ip length < ip header length */
! 131: u_long ips_fragments; /* fragments received */
! 132: u_long ips_fragdropped; /* frags dropped (dups, out of space) */
! 133: u_long ips_fragtimeout; /* fragments timed out */
! 134: u_long ips_forward; /* packets forwarded */
! 135: u_long ips_cantforward; /* packets rcvd for unreachable dest */
! 136: u_long ips_redirectsent; /* packets forwarded on same net */
! 137: u_long ips_noproto; /* unknown or unsupported protocol */
! 138: u_long ips_delivered; /* datagrams delivered to upper level*/
! 139: u_long ips_localout; /* total ip packets generated here */
! 140: u_long ips_odropped; /* lost packets due to nobufs, etc. */
! 141: u_long ips_reassembled; /* total packets reassembled ok */
! 142: u_long ips_fragmented; /* datagrams successfully fragmented */
! 143: u_long ips_ofragments; /* output fragments created */
! 144: u_long ips_cantfrag; /* don't fragment flag was set, etc. */
! 145: u_long ips_badoptions; /* error in option processing */
! 146: u_long ips_noroute; /* packets discarded due to no route */
! 147: u_long ips_badvers; /* ip version != 4 */
! 148: u_long ips_rawout; /* total raw ip packets generated */
! 149: u_long ips_toolong; /* ip length > max ip packet size */
! 150: };
! 151:
! 152: #ifdef KERNEL
! 153: /* flags passed to ip_output as last parameter */
! 154: #define IP_FORWARDING 0x1 /* most of ip header exists */
! 155: #define IP_RAWOUTPUT 0x2 /* raw ip header exists */
! 156: #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
! 157: #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
! 158:
! 159: struct inpcb;
! 160: struct route;
! 161:
! 162: extern struct ipstat ipstat;
! 163: extern struct ipq ipq; /* ip reass. queue */
! 164: extern u_short ip_id; /* ip packet ctr, for ids */
! 165: extern int ip_defttl; /* default IP ttl */
! 166: extern u_char ip_protox[];
! 167: extern struct socket *ip_rsvpd; /* reservation protocol daemon */
! 168: extern struct socket *ip_mrouter; /* multicast routing daemon */
! 169: extern int (*legal_vif_num) __P((int));
! 170: extern u_long (*ip_mcast_src) __P((int));
! 171: extern int rsvp_on;
! 172:
! 173: int ip_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
! 174: void ip_drain __P((void));
! 175: void ip_freemoptions __P((struct ip_moptions *));
! 176: void ip_init __P((void));
! 177: extern int (*ip_mforward) __P((struct ip *, struct ifnet *, struct mbuf *,
! 178: struct ip_moptions *));
! 179: int ip_output __P((struct mbuf *,
! 180: struct mbuf *, struct route *, int, struct ip_moptions *));
! 181: void ip_savecontrol __P((struct inpcb *, struct mbuf **, struct ip *,
! 182: struct mbuf *));
! 183: void ip_slowtimo __P((void));
! 184: struct mbuf *
! 185: ip_srcroute __P((void));
! 186: void ip_stripoptions __P((struct mbuf *, struct mbuf *));
! 187: int rip_ctloutput __P((int, struct socket *, int, int, struct mbuf **));
! 188: void rip_init __P((void));
! 189: void rip_input __P((struct mbuf *, int));
! 190: int rip_output __P((struct mbuf *, struct socket *, u_long));
! 191: int rip_usrreq __P((struct socket *,
! 192: int, struct mbuf *, struct mbuf *, struct mbuf *));
! 193: void ipip_input __P((struct mbuf *, int));
! 194: void rsvp_input __P((struct mbuf *, int));
! 195: int ip_rsvp_init __P((struct socket *));
! 196: int ip_rsvp_done __P((void));
! 197: int ip_rsvp_vif_init __P((struct socket *, struct mbuf *));
! 198: int ip_rsvp_vif_done __P((struct socket *, struct mbuf *));
! 199: void ip_rsvp_force_done __P((struct socket *));
! 200:
! 201: void pim_input __P((struct mbuf *, int )); /* Protocol Independent
! 202: * Multicast input machinery
! 203: */
! 204:
! 205: #ifdef IPDIVERT
! 206: void div_init __P((void));
! 207: void div_input __P((struct mbuf *, int));
! 208: int div_usrreq __P((struct socket *,
! 209: int, struct mbuf *, struct mbuf *, struct mbuf *));
! 210: extern u_short ip_divert_port;
! 211: extern u_short ip_divert_ignore;
! 212: #endif /* IPDIVERT */
! 213:
! 214: #endif /* KERNEL */
! 215:
! 216: #endif /* _NETINET_IP_VAR_H_ */
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