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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [libnetworking/] [netinet/] [ip_var.h] - Rev 483
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/* * 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 1.2 2001-09-27 12:01:56 chris Exp $ */ #ifndef _NETINET_IP_VAR_H_ #define _NETINET_IP_VAR_H_ /* * 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 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 }; /* * 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; /* 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 */ }; /* * 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 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 */ }; #ifdef KERNEL /* flags passed to ip_output as last parameter */ #define IP_FORWARDING 0x1 /* most of ip header exists */ #define IP_RAWOUTPUT 0x2 /* raw ip header exists */ #define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */ #define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */ struct inpcb; struct route; extern struct ipstat ipstat; extern u_short ip_id; /* ip packet ctr, for ids */ extern int ip_defttl; /* default IP ttl */ extern u_char ip_protox[]; extern struct socket *ip_rsvpd; /* reservation protocol daemon */ extern struct socket *ip_mrouter; /* multicast routing daemon */ extern int (*legal_vif_num) __P((int)); extern u_long (*ip_mcast_src) __P((int)); extern int rsvp_on; int ip_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); void ip_drain __P((void)); void ip_freemoptions __P((struct ip_moptions *)); void ip_init __P((void)); extern int (*ip_mforward) __P((struct ip *, struct ifnet *, struct mbuf *, struct ip_moptions *)); int ip_output __P((struct mbuf *, struct mbuf *, struct route *, int, struct ip_moptions *)); void ip_savecontrol __P((struct inpcb *, struct mbuf **, struct ip *, struct mbuf *)); void ip_slowtimo __P((void)); struct mbuf * ip_srcroute __P((void)); void ip_stripoptions __P((struct mbuf *, struct mbuf *)); int rip_ctloutput __P((int, struct socket *, int, int, struct mbuf **)); void rip_init __P((void)); void rip_input __P((struct mbuf *, int)); int rip_output __P((struct mbuf *, struct socket *, u_long)); int rip_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *)); void ipip_input __P((struct mbuf *, int)); void rsvp_input __P((struct mbuf *, int)); int ip_rsvp_init __P((struct socket *)); int ip_rsvp_done __P((void)); int ip_rsvp_vif_init __P((struct socket *, struct mbuf *)); int ip_rsvp_vif_done __P((struct socket *, struct mbuf *)); void ip_rsvp_force_done __P((struct socket *)); #ifdef IPDIVERT void div_init __P((void)); void div_input __P((struct mbuf *, int)); int div_usrreq __P((struct socket *, int, struct mbuf *, struct mbuf *, struct mbuf *)); extern u_short ip_divert_port; extern u_short ip_divert_ignore; #endif /* IPDIVERT */ #endif /* KERNEL */ #endif /* _NETINET_IP_VAR_H_ */
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